| 1 | /* altairz80_sio.c: MITS Altair serial I/O card |
| 2 | |
| 3 | Copyright (c) 2002-2008, Peter Schorn |
| 4 | |
| 5 | Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | copy of this software and associated documentation files (the "Software"), |
| 7 | to deal in the Software without restriction, including without limitation |
| 8 | the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | and/or sell copies of the Software, and to permit persons to whom the |
| 10 | Software is furnished to do so, subject to the following conditions: |
| 11 | |
| 12 | The above copyright notice and this permission notice shall be included in |
| 13 | all copies or substantial portions of the Software. |
| 14 | |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | PETER SCHORN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
| 19 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | |
| 22 | Except as contained in this notice, the name of Peter Schorn shall not |
| 23 | be used in advertising or otherwise to promote the sale, use or other dealings |
| 24 | in this Software without prior written authorization from Peter Schorn. |
| 25 | |
| 26 | Based on work by Charles E Owen (c) 1997 |
| 27 | |
| 28 | These functions support a simulated MITS 2SIO interface card. |
| 29 | The card had two physical I/O ports which could be connected |
| 30 | to any serial I/O device that would connect to a current loop, |
| 31 | RS232, or TTY interface. Available baud rates were jumper |
| 32 | selectable for each port from 110 to 9600. |
| 33 | |
| 34 | All I/O is via programmed I/O. Each device has a status port |
| 35 | and a data port. A write to the status port can select |
| 36 | some options for the device (0x03 will reset the port). |
| 37 | A read of the status port gets the port status: |
| 38 | |
| 39 | +---+---+---+---+---+---+---+---+ |
| 40 | | X | X | X | X | X | X | O | I | |
| 41 | +---+---+---+---+---+---+---+---+ |
| 42 | |
| 43 | I - A 1 in this bit position means a character has been received |
| 44 | on the data port and is ready to be read. |
| 45 | O - A 1 in this bit means the port is ready to receive a character |
| 46 | on the data port and transmit it out over the serial line. |
| 47 | |
| 48 | A read to the data port gets the buffered character, a write |
| 49 | to the data port writes the character to the device. |
| 50 | */ |
| 51 | |
| 52 | #include <ctype.h> |
| 53 | |
| 54 | #include "altairz80_defs.h" |
| 55 | #include "sim_sock.h" |
| 56 | #include "sim_tmxr.h" |
| 57 | #include <time.h> |
| 58 | #include <assert.h> |
| 59 | #if UNIX_PLATFORM |
| 60 | #include <glob.h> |
| 61 | #elif defined (_WIN32) |
| 62 | #include <windows.h> |
| 63 | #endif |
| 64 | |
| 65 | #define UNIT_V_SIO_ANSI (UNIT_V_UF + 0) /* ANSI mode, strip bit 8 on output */ |
| 66 | #define UNIT_SIO_ANSI (1 << UNIT_V_SIO_ANSI) |
| 67 | #define UNIT_V_SIO_UPPER (UNIT_V_UF + 1) /* upper case mode */ |
| 68 | #define UNIT_SIO_UPPER (1 << UNIT_V_SIO_UPPER) |
| 69 | #define UNIT_V_SIO_BS (UNIT_V_UF + 2) /* map delete to backspace */ |
| 70 | #define UNIT_SIO_BS (1 << UNIT_V_SIO_BS) |
| 71 | #define UNIT_V_SIO_VERBOSE (UNIT_V_UF + 3) /* verbose mode, i.e. show error messages */ |
| 72 | #define UNIT_SIO_VERBOSE (1 << UNIT_V_SIO_VERBOSE) |
| 73 | #define UNIT_V_SIO_MAP (UNIT_V_UF + 4) /* mapping mode on */ |
| 74 | #define UNIT_SIO_MAP (1 << UNIT_V_SIO_MAP) |
| 75 | #define UNIT_V_SIO_BELL (UNIT_V_UF + 5) /* ^G (bell character) rings bell */ |
| 76 | #define UNIT_SIO_BELL (1 << UNIT_V_SIO_BELL) |
| 77 | #define UNIT_V_SIO_INTERRUPT (UNIT_V_UF + 6) /* create keyboard interrupts */ |
| 78 | #define UNIT_SIO_INTERRUPT (1 << UNIT_V_SIO_INTERRUPT) |
| 79 | #define UNIT_V_SIO_SLEEP (UNIT_V_UF + 7) /* sleep after keyboard status check */ |
| 80 | #define UNIT_SIO_SLEEP (1 << UNIT_V_SIO_SLEEP) |
| 81 | |
| 82 | #define UNIT_V_SIMH_VERBOSE (UNIT_V_UF + 0) /* verbose mode for SIMH pseudo device */ |
| 83 | #define UNIT_SIMH_VERBOSE (1 << UNIT_V_SIMH_VERBOSE) |
| 84 | #define UNIT_V_SIMH_TIMERON (UNIT_V_UF + 1) /* SIMH pseudo device timer generate interrupts */ |
| 85 | #define UNIT_SIMH_TIMERON (1 << UNIT_V_SIMH_TIMERON) |
| 86 | |
| 87 | #define TERMINALS 4 /* lines per mux */ |
| 88 | #define SIO_CAN_READ 0x01 /* bit 0 is set iff character available */ |
| 89 | #define SIO_CAN_WRITE 0x02 /* bit 1 is set iff character can be sent */ |
| 90 | #define SIO_RESET 0x03 /* Command to reset SIO */ |
| 91 | #define VGSIO_CAN_READ 0x02 /* bit 1 is set iff character available */ |
| 92 | #define VGSIO_CAN_WRITE 0x01 /* bit 0 is set iff character can be sent */ |
| 93 | #define KBD_HAS_CHAR 0x40 /* bit 6 is set iff character available */ |
| 94 | #define KBD_HAS_NO_CHAR 0x01 /* bit 0 is set iff no character is available */ |
| 95 | |
| 96 | #define BACKSPACE_CHAR 0x08 /* backspace character */ |
| 97 | #define DELETE_CHAR 0x7f /* delete character */ |
| 98 | #define CONTROLC_CHAR 0x03 /* control C character */ |
| 99 | #define CONTROLG_CHAR 0x07 /* control G char., rings bell when displayed */ |
| 100 | #define CONTROLZ_CHAR 0x1a /* control Z character */ |
| 101 | |
| 102 | #define PORT_TABLE_SIZE 256 /* size of port mapping table */ |
| 103 | #define SLEEP_ALLOWED_START_DEFAULT 100 /* default initial value for sleepAllowedCounter*/ |
| 104 | |
| 105 | static t_stat sio_set_verbose (UNIT *uptr, int32 value, char *cptr, void *desc); |
| 106 | static t_stat simh_dev_set_timeron (UNIT *uptr, int32 value, char *cptr, void *desc); |
| 107 | static t_stat simh_dev_set_timeroff (UNIT *uptr, int32 value, char *cptr, void *desc); |
| 108 | static t_stat sio_reset(DEVICE *dptr); |
| 109 | static t_stat sio_attach(UNIT *uptr, char *cptr); |
| 110 | static t_stat sio_detach(UNIT *uptr); |
| 111 | static t_stat ptr_reset(DEVICE *dptr); |
| 112 | static t_stat ptp_reset(DEVICE *dptr); |
| 113 | static t_stat toBool(char tf, int *result); |
| 114 | static t_stat sio_dev_set_port(UNIT *uptr, int32 value, char *cptr, void *desc); |
| 115 | static t_stat sio_dev_show_port(FILE *st, UNIT *uptr, int32 val, void *desc); |
| 116 | static t_stat sio_dev_set_interrupton(UNIT *uptr, int32 value, char *cptr, void *desc); |
| 117 | static t_stat sio_dev_set_interruptoff(UNIT *uptr, int32 value, char *cptr, void *desc); |
| 118 | static t_stat sio_svc(UNIT *uptr); |
| 119 | static t_stat simh_dev_reset(DEVICE *dptr); |
| 120 | static t_stat simh_svc(UNIT *uptr); |
| 121 | int32 nulldev (const int32 port, const int32 io, const int32 data); |
| 122 | int32 sr_dev (const int32 port, const int32 io, const int32 data); |
| 123 | int32 simh_dev (const int32 port, const int32 io, const int32 data); |
| 124 | int32 sio0d (const int32 port, const int32 io, const int32 data); |
| 125 | int32 sio0s (const int32 port, const int32 io, const int32 data); |
| 126 | int32 sio1d (const int32 port, const int32 io, const int32 data); |
| 127 | int32 sio1s (const int32 port, const int32 io, const int32 data); |
| 128 | void printMessage(void); |
| 129 | void do_SIMH_sleep(void); |
| 130 | static void pollConnection(void); |
| 131 | static int32 mapCharacter(int32 ch); |
| 132 | static void checkSleep(void); |
| 133 | static void voidSleep(void); |
| 134 | |
| 135 | extern int32 getBankSelect(void); |
| 136 | extern void setBankSelect(const int32 b); |
| 137 | extern uint32 getCommon(void); |
| 138 | extern uint8 GetBYTEWrapper(const uint32 Addr); |
| 139 | extern uint32 sim_map_resource(uint32 baseaddr, uint32 size, uint32 resource_type, |
| 140 | int32 (*routine)(const int32, const int32, const int32), uint8 unmap); |
| 141 | |
| 142 | extern int32 chiptype; |
| 143 | extern const t_bool rtc_avail; |
| 144 | extern FILE *sim_log; |
| 145 | extern uint32 PCX; |
| 146 | extern int32 sim_switches; |
| 147 | extern const char *scp_error_messages[]; |
| 148 | extern int32 SR; |
| 149 | extern UNIT cpu_unit; |
| 150 | extern volatile int32 stop_cpu; |
| 151 | extern int32 sim_interval; |
| 152 | |
| 153 | /* SIMH pseudo device status registers */ |
| 154 | /* ZSDOS clock definitions */ |
| 155 | static time_t ClockZSDOSDelta = 0; /* delta between real clock and Altair clock */ |
| 156 | static int32 setClockZSDOSPos = 0; /* determines state for receiving address of parameter block */ |
| 157 | static int32 setClockZSDOSAdr = 0; /* address in M of 6 byte parameter block for setting time */ |
| 158 | static int32 getClockZSDOSPos = 0; /* determines state for sending clock information */ |
| 159 | |
| 160 | /* CPM3 clock definitions */ |
| 161 | static time_t ClockCPM3Delta = 0; /* delta between real clock and Altair clock */ |
| 162 | static int32 setClockCPM3Pos = 0; /* determines state for receiving address of parameter block */ |
| 163 | static int32 setClockCPM3Adr = 0; /* address in M of 5 byte parameter block for setting time */ |
| 164 | static int32 getClockCPM3Pos = 0; /* determines state for sending clock information */ |
| 165 | static int32 daysCPM3SinceOrg = 0; /* days since 1 Jan 1978 */ |
| 166 | |
| 167 | /* interrupt related */ |
| 168 | static uint32 timeOfNextInterrupt; /* time when next interrupt is scheduled */ |
| 169 | int32 timerInterrupt = FALSE; /* timer interrupt pending */ |
| 170 | int32 timerInterruptHandler = 0x0fc00; /* default address of interrupt handling routine */ |
| 171 | static int32 setTimerInterruptAdrPos= 0; /* determines state for receiving timerInterruptHandler */ |
| 172 | static int32 timerDelta = 100; /* interrupt every 100 ms */ |
| 173 | static int32 setTimerDeltaPos = 0; /* determines state for receiving timerDelta */ |
| 174 | |
| 175 | /* stop watch and timer related */ |
| 176 | static uint32 stopWatchDelta = 0; /* stores elapsed time of stop watch */ |
| 177 | static int32 getStopWatchDeltaPos = 0; /* determines the state for receiving stopWatchDelta */ |
| 178 | static uint32 stopWatchNow = 0; /* stores starting time of stop watch */ |
| 179 | static int32 markTimeSP = 0; /* stack pointer for timer stack */ |
| 180 | |
| 181 | /* default time in microseconds to sleep for SIMHSleepCmd */ |
| 182 | #if defined (_WIN32) |
| 183 | static uint32 SIMHSleep = 1000; /* Sleep uses milliseconds */ |
| 184 | #elif defined (__MWERKS__) && defined (macintosh) |
| 185 | static uint32 SIMHSleep = 0; /* no sleep on Macintosh OS9 */ |
| 186 | #else |
| 187 | static uint32 SIMHSleep = 100; /* on other platforms 100 micro seconds is good enough */ |
| 188 | #endif |
| 189 | static uint32 sleepAllowedCounter = 0; /* only sleep on no character available when == 0 */ |
| 190 | static uint32 sleepAllowedStart = SLEEP_ALLOWED_START_DEFAULT; /* default start for above counter */ |
| 191 | |
| 192 | /* miscellaneous */ |
| 193 | static int32 versionPos = 0; /* determines state for sending device identifier */ |
| 194 | static int32 lastCPMStatus = 0; /* result of last attachCPM command */ |
| 195 | static int32 lastCommand = 0; /* most recent command processed on port 0xfeh */ |
| 196 | static int32 getCommonPos = 0; /* determines state for sending the 'common' register */ |
| 197 | |
| 198 | /* support for wild card expansion */ |
| 199 | #if UNIX_PLATFORM |
| 200 | static glob_t globS; |
| 201 | static uint32 globPosNameList = 0; |
| 202 | static int32 globPosName = 0; |
| 203 | static int32 globValid = FALSE; |
| 204 | static int32 globError = 0; |
| 205 | #elif defined (_WIN32) |
| 206 | static WIN32_FIND_DATA FindFileData; |
| 207 | static HANDLE hFind = INVALID_HANDLE_VALUE; |
| 208 | static int32 globFinished = FALSE; |
| 209 | static int32 globValid = FALSE; |
| 210 | static int32 globPosName = 0; |
| 211 | #endif |
| 212 | |
| 213 | /* SIO status registers */ |
| 214 | static int32 warnLevelSIO = 3; /* display at most 'warnLevelSIO' times the same warning */ |
| 215 | static int32 warnUnattachedPTP = 0; /* display a warning message if < warnLevel and SIO set to |
| 216 | VERBOSE and output to PTP without an attached file */ |
| 217 | static int32 warnUnattachedPTR = 0; /* display a warning message if < warnLevel and SIO set to |
| 218 | VERBOSE and attempt to read from PTR without an attached file */ |
| 219 | static int32 warnPTREOF = 0; /* display a warning message if < warnLevel and SIO set to |
| 220 | VERBOSE and attempt to read from PTR past EOF */ |
| 221 | static int32 warnUnassignedPort = 0; /* display a warning message if < warnLevel and SIO set to |
| 222 | VERBOSE and attempt to perform IN or OUT on an unassigned PORT */ |
| 223 | |
| 224 | int32 keyboardInterrupt = FALSE; /* keyboard interrupt pending */ |
| 225 | uint32 keyboardInterruptHandler = 0x0038;/* address of keyboard interrupt handler */ |
| 226 | |
| 227 | static TMLN TerminalLines[TERMINALS] = { /* four terminals */ |
| 228 | { 0 } |
| 229 | }; |
| 230 | |
| 231 | static TMXR altairTMXR = { /* mux descriptor */ |
| 232 | TERMINALS, 0, 0, TerminalLines |
| 233 | }; |
| 234 | |
| 235 | static UNIT sio_unit = { |
| 236 | UDATA (&sio_svc, UNIT_ATTABLE | UNIT_SIO_MAP | UNIT_SIO_SLEEP, 0), |
| 237 | 100000, /* wait */ |
| 238 | FALSE, /* u3 = FALSE, no character available in buffer */ |
| 239 | FALSE, /* u4 = FALSE, terminal input is not attached to a file */ |
| 240 | FALSE, /* u5 = FALSE, terminal input has not yet reached EOF */ |
| 241 | 0 /* u6 = 0, not used */ |
| 242 | }; |
| 243 | |
| 244 | static REG sio_reg[] = { |
| 245 | { DRDATA (SIOWLEV, warnLevelSIO, 32) }, |
| 246 | { DRDATA (WRNUPTP, warnUnattachedPTP, 32) }, |
| 247 | { DRDATA (WRNUPTR, warnUnattachedPTR, 32) }, |
| 248 | { DRDATA (WRNPTRE, warnPTREOF, 32) }, |
| 249 | { DRDATA (WRUPORT, warnUnassignedPort, 32) }, |
| 250 | { HRDATA (FILEATT, sio_unit.u4, 8), REG_RO }, /* TRUE iff terminal input is attached to a file */ |
| 251 | { HRDATA (FILEEOF, sio_unit.u5, 8), REG_RO }, /* TRUE iff terminal input file has reached EOF */ |
| 252 | { HRDATA (TSTATUS, sio_unit.u3, 8) }, /* TRUE iff a character available in sio_unit.buf */ |
| 253 | { DRDATA (TBUFFER, sio_unit.buf, 8) }, /* input buffer for one character */ |
| 254 | { DRDATA (KEYBDI, keyboardInterrupt, 3), REG_RO }, |
| 255 | { HRDATA (KEYBDH, keyboardInterruptHandler, 16) }, |
| 256 | { NULL } |
| 257 | }; |
| 258 | |
| 259 | static MTAB sio_mod[] = { |
| 260 | { UNIT_SIO_ANSI, 0, "TTY", "TTY", NULL }, /* keep bit 8 as is for output */ |
| 261 | { UNIT_SIO_ANSI, UNIT_SIO_ANSI, "ANSI", "ANSI", NULL }, /* set bit 8 to 0 before output */ |
| 262 | { UNIT_SIO_UPPER, 0, "ALL", "ALL", NULL }, /* do not change case of input characters */ |
| 263 | { UNIT_SIO_UPPER, UNIT_SIO_UPPER, "UPPER", "UPPER", NULL }, /* change input characters to upper case */ |
| 264 | { UNIT_SIO_BS, 0, "BS", "BS", NULL }, /* map delete to backspace */ |
| 265 | { UNIT_SIO_BS, UNIT_SIO_BS, "DEL", "DEL", NULL }, /* map backspace to delete */ |
| 266 | { UNIT_SIO_VERBOSE, 0, "QUIET", "QUIET", NULL }, /* quiet, no error messages */ |
| 267 | { UNIT_SIO_VERBOSE, UNIT_SIO_VERBOSE, "VERBOSE", "VERBOSE", &sio_set_verbose }, |
| 268 | /* verbose, display warning messages */ |
| 269 | { UNIT_SIO_MAP, 0, "NOMAP", "NOMAP", NULL }, /* disable character mapping */ |
| 270 | { UNIT_SIO_MAP, UNIT_SIO_MAP, "MAP", "MAP", NULL }, /* enable all character mapping */ |
| 271 | { UNIT_SIO_BELL, 0, "BELL", "BELL", NULL }, /* enable bell character */ |
| 272 | { UNIT_SIO_BELL, UNIT_SIO_BELL, "NOBELL", "NOBELL", NULL }, /* suppress ringing the bell */ |
| 273 | { UNIT_SIO_SLEEP, 0, "NOSLEEP", "NOSLEEP", NULL }, /* no sleep after keyboard status check */ |
| 274 | { UNIT_SIO_SLEEP, UNIT_SIO_SLEEP, "SLEEP", "SLEEP", NULL }, /* sleep after keyboard status check */ |
| 275 | /* no keyboard interrupts */ |
| 276 | { UNIT_SIO_INTERRUPT, 0, "NOINTERRUPT","NOINTERRUPT",&sio_dev_set_interruptoff }, |
| 277 | /* create keyboard interrupts */ |
| 278 | { UNIT_SIO_INTERRUPT, UNIT_SIO_INTERRUPT, "INTERRUPT","INTERRUPT",&sio_dev_set_interrupton }, |
| 279 | { MTAB_XTD|MTAB_VDV|MTAB_VAL, 0, "PORT", "PORT", &sio_dev_set_port, &sio_dev_show_port }, |
| 280 | { 0 } |
| 281 | }; |
| 282 | |
| 283 | DEVICE sio_dev = { |
| 284 | "SIO", &sio_unit, sio_reg, sio_mod, |
| 285 | 1, 10, 31, 1, 8, 8, |
| 286 | NULL, NULL, &sio_reset, |
| 287 | NULL, &sio_attach, &sio_detach, |
| 288 | NULL, 0, 0, |
| 289 | NULL, NULL, NULL }; |
| 290 | |
| 291 | static UNIT ptr_unit = { |
| 292 | UDATA (NULL, UNIT_SEQ | UNIT_ATTABLE | UNIT_ROABLE, 0) |
| 293 | }; |
| 294 | |
| 295 | static REG ptr_reg[] = { |
| 296 | { HRDATA (STAT, ptr_unit.u3, 8) }, |
| 297 | { NULL } |
| 298 | }; |
| 299 | |
| 300 | DEVICE ptr_dev = { |
| 301 | "PTR", &ptr_unit, ptr_reg, NULL, |
| 302 | 1, 10, 31, 1, 8, 8, |
| 303 | NULL, NULL, &ptr_reset, |
| 304 | NULL, NULL, NULL, |
| 305 | NULL, 0, 0, |
| 306 | NULL, NULL, NULL |
| 307 | }; |
| 308 | |
| 309 | static UNIT ptp_unit = { |
| 310 | UDATA (NULL, UNIT_SEQ + UNIT_ATTABLE, 0) |
| 311 | }; |
| 312 | |
| 313 | DEVICE ptp_dev = { |
| 314 | "PTP", &ptp_unit, NULL, NULL, |
| 315 | 1, 10, 31, 1, 8, 8, |
| 316 | NULL, NULL, &ptp_reset, |
| 317 | NULL, NULL, NULL, |
| 318 | NULL, 0, 0, |
| 319 | NULL, NULL, NULL |
| 320 | }; |
| 321 | |
| 322 | /* Synthetic device SIMH for communication |
| 323 | between Altair and SIMH environment using port 0xfe */ |
| 324 | static UNIT simh_unit = { |
| 325 | UDATA (&simh_svc, 0, 0), KBD_POLL_WAIT |
| 326 | }; |
| 327 | |
| 328 | static REG simh_reg[] = { |
| 329 | { DRDATA (CZD, ClockZSDOSDelta, 32) }, |
| 330 | { DRDATA (SCZP, setClockZSDOSPos, 8), REG_RO }, |
| 331 | { HRDATA (SCZA, setClockZSDOSAdr, 16), REG_RO }, |
| 332 | { DRDATA (GCZP, getClockZSDOSPos, 8), REG_RO }, |
| 333 | |
| 334 | { DRDATA (CC3D, ClockCPM3Delta, 32) }, |
| 335 | { DRDATA (SC3DP, setClockCPM3Pos, 8), REG_RO }, |
| 336 | { HRDATA (SC3DA, setClockCPM3Adr, 16), REG_RO }, |
| 337 | { DRDATA (GC3DP, getClockCPM3Pos, 8), REG_RO }, |
| 338 | { DRDATA (D3DO, daysCPM3SinceOrg, 32), REG_RO }, |
| 339 | |
| 340 | { DRDATA (TOFNI, timeOfNextInterrupt, 32), REG_RO }, |
| 341 | { DRDATA (TIMI, timerInterrupt, 3) }, |
| 342 | { HRDATA (TIMH, timerInterruptHandler, 16) }, |
| 343 | { DRDATA (STIAP, setTimerInterruptAdrPos,8), REG_RO }, |
| 344 | { DRDATA (TIMD, timerDelta, 32) }, |
| 345 | { DRDATA (STDP, setTimerDeltaPos, 8), REG_RO }, |
| 346 | { DRDATA (SLEEP, SIMHSleep, 32) }, |
| 347 | { DRDATA (VOSLP, sleepAllowedStart, 32) }, |
| 348 | |
| 349 | { DRDATA (STPDT, stopWatchDelta, 32), REG_RO }, |
| 350 | { DRDATA (STPOS, getStopWatchDeltaPos, 8), REG_RO }, |
| 351 | { DRDATA (STPNW, stopWatchNow, 32), REG_RO }, |
| 352 | { DRDATA (MTSP, markTimeSP, 8), REG_RO }, |
| 353 | |
| 354 | { DRDATA (VPOS, versionPos, 8), REG_RO }, |
| 355 | { DRDATA (LCPMS, lastCPMStatus, 8), REG_RO }, |
| 356 | { DRDATA (LCMD, lastCommand, 8), REG_RO }, |
| 357 | { DRDATA (CPOS, getCommonPos, 8), REG_RO }, |
| 358 | { NULL } |
| 359 | }; |
| 360 | |
| 361 | static MTAB simh_mod[] = { |
| 362 | /* quiet, no warning messages */ |
| 363 | { UNIT_SIMH_VERBOSE, 0, "QUIET", "QUIET", NULL }, |
| 364 | /* verbose, display warning messages */ |
| 365 | { UNIT_SIMH_VERBOSE, UNIT_SIMH_VERBOSE, "VERBOSE", "VERBOSE", NULL }, |
| 366 | /* timer generated interrupts are off */ |
| 367 | { UNIT_SIMH_TIMERON, 0, "TIMEROFF", "TIMEROFF", &simh_dev_set_timeroff }, |
| 368 | /* timer generated interrupts are on */ |
| 369 | { UNIT_SIMH_TIMERON, UNIT_SIMH_TIMERON, "TIMERON", "TIMERON", &simh_dev_set_timeron }, |
| 370 | { 0 } |
| 371 | }; |
| 372 | |
| 373 | DEVICE simh_device = { |
| 374 | "SIMH", &simh_unit, simh_reg, simh_mod, |
| 375 | 1, 10, 31, 1, 16, 4, |
| 376 | NULL, NULL, &simh_dev_reset, |
| 377 | NULL, NULL, NULL, |
| 378 | NULL, 0, 0, |
| 379 | NULL, NULL, NULL |
| 380 | }; |
| 381 | |
| 382 | char messageBuffer[256] = { 0 }; |
| 383 | |
| 384 | void printMessage(void) { |
| 385 | printf(messageBuffer); |
| 386 | printf(NLP); |
| 387 | if (sim_log) { |
| 388 | fprintf(sim_log, messageBuffer); |
| 389 | fprintf(sim_log,"\n"); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | static void resetSIOWarningFlags(void) { |
| 394 | warnUnattachedPTP = warnUnattachedPTR = warnPTREOF = warnUnassignedPort = 0; |
| 395 | } |
| 396 | |
| 397 | static t_stat sio_set_verbose(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 398 | resetSIOWarningFlags(); |
| 399 | return SCPE_OK; |
| 400 | } |
| 401 | |
| 402 | static t_stat sio_attach(UNIT *uptr, char *cptr) { |
| 403 | t_stat r = SCPE_IERR; |
| 404 | sio_unit.u3 = FALSE; /* no character in terminal input buffer */ |
| 405 | get_uint(cptr, 10, 65535, &r); /* attempt to get port, discard result */ |
| 406 | if (r == SCPE_OK) { /* string can be interpreted as port number */ |
| 407 | sio_unit.u4 = FALSE; /* terminal input is not attached to a file */ |
| 408 | return tmxr_attach(&altairTMXR, uptr, cptr); /* attach mux */ |
| 409 | } |
| 410 | sio_unit.u4 = TRUE; /* terminal input is attached to a file */ |
| 411 | sio_unit.u5 = FALSE; /* EOF not yet reached */ |
| 412 | return attach_unit(uptr, cptr); |
| 413 | } |
| 414 | |
| 415 | static t_stat sio_detach(UNIT *uptr) { |
| 416 | sio_unit.u3 = FALSE; /* no character in terminal input buffer */ |
| 417 | if (sio_unit.u4) { /* is terminal input attached to a file? */ |
| 418 | sio_unit.u4 = FALSE; /* not anymore, detach */ |
| 419 | return detach_unit(uptr); |
| 420 | } |
| 421 | return tmxr_detach(&altairTMXR, uptr); |
| 422 | } |
| 423 | |
| 424 | static void pollConnection(void) { |
| 425 | if (sio_unit.flags & UNIT_ATT) { |
| 426 | int32 temp = tmxr_poll_conn(&altairTMXR); /* poll connection */ |
| 427 | if (temp >= 0) |
| 428 | TerminalLines[temp].rcve = 1; /* enable receive */ |
| 429 | tmxr_poll_rx(&altairTMXR); /* poll input */ |
| 430 | tmxr_poll_tx(&altairTMXR); /* poll output */ |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | /* reset routines */ |
| 435 | static t_stat sio_reset(DEVICE *dptr) { |
| 436 | int32 i; |
| 437 | sio_unit.u3 = FALSE; /* no character in terminal input buffer */ |
| 438 | resetSIOWarningFlags(); |
| 439 | if (sio_unit.u4) { /* is terminal input attached to a file? */ |
| 440 | rewind(sio_unit.fileref); /* yes, rewind input */ |
| 441 | sio_unit.u5 = FALSE; /* EOF not yet reached */ |
| 442 | } |
| 443 | else if (sio_unit.flags & UNIT_ATT) |
| 444 | for (i = 0; i < TERMINALS; i++) |
| 445 | if (TerminalLines[i].conn) |
| 446 | tmxr_reset_ln(&TerminalLines[i]); |
| 447 | return SCPE_OK; |
| 448 | } |
| 449 | |
| 450 | static t_stat ptr_reset(DEVICE *dptr) { |
| 451 | resetSIOWarningFlags(); |
| 452 | ptr_unit.u3 = FALSE; /* End Of File not yet reached */ |
| 453 | if (ptr_unit.flags & UNIT_ATT) /* attached? */ |
| 454 | rewind(ptr_unit.fileref); |
| 455 | return SCPE_OK; |
| 456 | } |
| 457 | |
| 458 | static t_stat ptp_reset(DEVICE *dptr) { |
| 459 | resetSIOWarningFlags(); |
| 460 | return SCPE_OK; |
| 461 | } |
| 462 | |
| 463 | static int32 mapCharacter(int32 ch) { |
| 464 | ch &= 0xff; |
| 465 | if (sio_unit.flags & UNIT_SIO_MAP) { |
| 466 | if (sio_unit.flags & UNIT_SIO_BS) { |
| 467 | if (ch == BACKSPACE_CHAR) |
| 468 | return DELETE_CHAR; |
| 469 | } |
| 470 | else if (ch == DELETE_CHAR) |
| 471 | return BACKSPACE_CHAR; |
| 472 | if (sio_unit.flags & UNIT_SIO_UPPER) |
| 473 | return toupper(ch); |
| 474 | } |
| 475 | return ch; |
| 476 | } |
| 477 | |
| 478 | /* I/O instruction handlers, called from the CPU module when an |
| 479 | IN or OUT instruction is issued. |
| 480 | |
| 481 | Each function is passed an 'io' flag, where 0 means a read from |
| 482 | the port, and 1 means a write to the port. On input, the actual |
| 483 | input is passed as the return value, on output, 'data' is written |
| 484 | to the device. |
| 485 | |
| 486 | Port 1 controls console I/O. We distinguish three cases: |
| 487 | 1) SIO attached to a file (i.e. input taken from a file ) |
| 488 | 2) SIO attached to a port (i.e. Telnet console I/O ) |
| 489 | 3) SIO not attached to a port (i.e. "regular" console I/O ) |
| 490 | */ |
| 491 | |
| 492 | typedef struct { |
| 493 | int32 port; /* this information belongs to port number 'port' */ |
| 494 | int32 terminalLine; /* map to this 'terminalLine' */ |
| 495 | int32 sio_can_read; /* bit mask to indicate that one can read from this port */ |
| 496 | int32 sio_cannot_read; /* bit mask to indicate that one cannot read from this port */ |
| 497 | int32 sio_can_write; /* bit mask to indicate that one can write to this port */ |
| 498 | int32 hasReset; /* TRUE iff SIO has reset command */ |
| 499 | int32 sio_reset; /* reset command */ |
| 500 | int32 hasOUT; /* TRUE iff port supports OUT command */ |
| 501 | int32 isBuiltin; /* TRUE iff mapping is built in */ |
| 502 | } SIO_PORT_INFO; |
| 503 | |
| 504 | static SIO_PORT_INFO port_table[PORT_TABLE_SIZE] = { |
| 505 | {0x00, 0, KBD_HAS_CHAR, KBD_HAS_NO_CHAR, SIO_CAN_WRITE, FALSE, 0, FALSE, TRUE }, |
| 506 | {0x01, 0, 0, 0, 0, FALSE, 0, FALSE, TRUE }, |
| 507 | {0x02, 0, VGSIO_CAN_READ, 0, VGSIO_CAN_WRITE, FALSE, 0, TRUE, TRUE }, |
| 508 | {0x03, 0, VGSIO_CAN_READ, 0, VGSIO_CAN_WRITE, FALSE, 0, FALSE, TRUE }, |
| 509 | {0x10, 0, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, FALSE, TRUE }, |
| 510 | {0x14, 1, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, FALSE, TRUE }, |
| 511 | {0x16, 2, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, FALSE, TRUE }, |
| 512 | {0x18, 3, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, FALSE, TRUE }, |
| 513 | {0x11, 0, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, TRUE, TRUE }, |
| 514 | {0x15, 1, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, TRUE, TRUE }, |
| 515 | {0x17, 2, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, TRUE, TRUE }, |
| 516 | {0x19, 3, SIO_CAN_READ, 0, SIO_CAN_WRITE, TRUE, SIO_RESET, TRUE, TRUE }, |
| 517 | {-1, 0, 0, 0, 0, 0, 0, 0, 0} /* must be last */ |
| 518 | }; |
| 519 | |
| 520 | static SIO_PORT_INFO lookupPortInfo(const int32 port, int32 *position) { |
| 521 | int32 i = 0; |
| 522 | while ((port_table[i].port != -1) && (port_table[i].port != port)) i++; |
| 523 | *position = i; |
| 524 | return port_table[i]; |
| 525 | } |
| 526 | |
| 527 | /* keyboard idle detection: sleep when feature enabled, no character available |
| 528 | (duty of caller) and operation not voided (e.g. when output is available) */ |
| 529 | static void checkSleep(void) { |
| 530 | if (sio_unit.flags & UNIT_SIO_SLEEP) { |
| 531 | if (sleepAllowedCounter) sleepAllowedCounter--; |
| 532 | else do_SIMH_sleep(); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /* void sleep for next 'sleepAllowedStart' tests */ |
| 537 | static void voidSleep(void) { |
| 538 | sleepAllowedCounter = sleepAllowedStart; |
| 539 | } |
| 540 | |
| 541 | /* generic status port for keyboard input / terminal output */ |
| 542 | int32 sio0s(const int32 port, const int32 io, const int32 data) { |
| 543 | int32 ch, result; |
| 544 | SIO_PORT_INFO spi = lookupPortInfo(port, &ch); |
| 545 | assert(spi.port == port); |
| 546 | pollConnection(); |
| 547 | if (io == 0) { /* IN */ |
| 548 | if (sio_unit.u4) /* attached to a file? */ |
| 549 | if (sio_unit.u5) /* EOF reached? */ |
| 550 | sio_detach(&sio_unit); /* detach file and switch to keyboard input */ |
| 551 | else return spi.sio_can_read | spi.sio_can_write; |
| 552 | if (sio_unit.flags & UNIT_ATT) { /* attached to a port? */ |
| 553 | if (tmxr_rqln(&TerminalLines[spi.terminalLine])) |
| 554 | result = spi.sio_can_read; |
| 555 | else { |
| 556 | result = spi.sio_cannot_read; |
| 557 | checkSleep(); |
| 558 | } |
| 559 | return result | /* read possible if character available */ |
| 560 | (TerminalLines[spi.terminalLine].conn && TerminalLines[spi.terminalLine].xmte ? spi.sio_can_write : 0x00); |
| 561 | /* write possible if connected and transmit |
| 562 | enabled */ |
| 563 | } |
| 564 | if (sio_unit.u3) /* character available? */ |
| 565 | return spi.sio_can_read | spi.sio_can_write; |
| 566 | ch = sim_poll_kbd(); /* no, try to get a character */ |
| 567 | if (ch) { /* character available? */ |
| 568 | if (ch == SCPE_STOP) { /* stop CPU in case ^E (default) was typed */ |
| 569 | stop_cpu = TRUE; |
| 570 | sim_interval = 0; /* detect stop condition as soon as possible*/ |
| 571 | return spi.sio_can_write | spi.sio_cannot_read; /* do not consume stop character */ |
| 572 | } |
| 573 | sio_unit.u3 = TRUE; /* indicate character available */ |
| 574 | sio_unit.buf = ch; /* store character in buffer */ |
| 575 | return spi.sio_can_read | spi.sio_can_write; |
| 576 | } |
| 577 | checkSleep(); |
| 578 | return spi.sio_can_write | spi.sio_cannot_read; |
| 579 | } /* OUT follows, no fall-through from IN */ |
| 580 | if (spi.hasReset && (data == spi.sio_reset)) /* reset command */ |
| 581 | sio_unit.u3 = FALSE; /* indicate that no character is available */ |
| 582 | return 0x00; /* ignored since OUT */ |
| 583 | } |
| 584 | |
| 585 | /* generic data port for keyboard input / terminal output */ |
| 586 | int32 sio0d(const int32 port, const int32 io, const int32 data) { |
| 587 | int32 ch; |
| 588 | SIO_PORT_INFO spi = lookupPortInfo(port, &ch); |
| 589 | assert(spi.port == port); |
| 590 | pollConnection(); |
| 591 | if (io == 0) { /* IN */ |
| 592 | if (sio_unit.u4) { /* attached to a file? */ |
| 593 | if (sio_unit.u5) { /* EOF reached? */ |
| 594 | sio_detach(&sio_unit); /* detach file and switch to keyboard input */ |
| 595 | return CONTROLC_CHAR; /* this time return ^C after all */ |
| 596 | } |
| 597 | if ((ch = getc(sio_unit.fileref)) == EOF) { /* end of file? */ |
| 598 | sio_unit.u5 = TRUE; /* terminal input file has reached EOF */ |
| 599 | return CONTROLC_CHAR; /* result is ^C (= CP/M interrupt) */ |
| 600 | } |
| 601 | return mapCharacter(ch); /* return mapped character */ |
| 602 | } |
| 603 | if (sio_unit.flags & UNIT_ATT) |
| 604 | return mapCharacter(tmxr_getc_ln(&TerminalLines[spi.terminalLine])); |
| 605 | sio_unit.u3 = FALSE; /* no character is available any more */ |
| 606 | return mapCharacter(sio_unit.buf); /* return previous character */ |
| 607 | } /* OUT follows, no fall-through from IN */ |
| 608 | if (spi.hasOUT) { |
| 609 | ch = sio_unit.flags & UNIT_SIO_ANSI ? data & 0x7f : data; /* clear highest bit in ANSI mode */ |
| 610 | if ((ch != CONTROLG_CHAR) || !(sio_unit.flags & UNIT_SIO_BELL)) { |
| 611 | voidSleep(); |
| 612 | if ((sio_unit.flags & UNIT_ATT) && (!sio_unit.u4)) /* attached to a port and not to a file */ |
| 613 | tmxr_putc_ln(&TerminalLines[spi.terminalLine], ch); /* status ignored */ |
| 614 | else |
| 615 | sim_putchar(ch); |
| 616 | } |
| 617 | } |
| 618 | return 0x00; /* ignored since OUT */ |
| 619 | } |
| 620 | |
| 621 | /* PTR/PTP status port */ |
| 622 | int32 sio1s(const int32 port, const int32 io, const int32 data) { |
| 623 | if (io == 0) { /* IN */ |
| 624 | /* reset I bit iff PTR unit not attached or |
| 625 | no more data available. O bit is always |
| 626 | set since write always possible. */ |
| 627 | if ((ptr_unit.flags & UNIT_ATT) == 0) { /* PTR is not attached */ |
| 628 | if ((sio_unit.flags & UNIT_SIO_VERBOSE) && (warnUnattachedPTR < warnLevelSIO)) { |
| 629 | warnUnattachedPTR++; |
| 630 | /*06*/ MESSAGE_2("Attempt to test status of unattached PTR[0x%02x]. 0x02 returned.", port); |
| 631 | } |
| 632 | return SIO_CAN_WRITE; |
| 633 | } |
| 634 | /* if EOF then SIO_CAN_WRITE else |
| 635 | (SIO_CAN_WRITE and SIO_CAN_READ) */ |
| 636 | return ptr_unit.u3 ? SIO_CAN_WRITE : (SIO_CAN_READ | SIO_CAN_WRITE); |
| 637 | } /* OUT follows */ |
| 638 | if (data == SIO_RESET) |
| 639 | ptr_unit.u3 = FALSE; /* reset EOF indicator */ |
| 640 | return 0x00; /* ignored since OUT */ |
| 641 | } |
| 642 | |
| 643 | /* PTR/PTP data port */ |
| 644 | int32 sio1d(const int32 port, const int32 io, const int32 data) { |
| 645 | int32 ch; |
| 646 | if (io == 0) { /* IN */ |
| 647 | if (ptr_unit.u3) { /* EOF reached, no more data available */ |
| 648 | if ((sio_unit.flags & UNIT_SIO_VERBOSE) && (warnPTREOF < warnLevelSIO)) { |
| 649 | warnPTREOF++; |
| 650 | /*07*/ MESSAGE_2("PTR[0x%02x] attempted to read past EOF. 0x00 returned.", port); |
| 651 | } |
| 652 | return 0x00; |
| 653 | } |
| 654 | if ((ptr_unit.flags & UNIT_ATT) == 0) { /* not attached */ |
| 655 | if ((sio_unit.flags & UNIT_SIO_VERBOSE) && (warnUnattachedPTR < warnLevelSIO)) { |
| 656 | warnUnattachedPTR++; |
| 657 | /*08*/ MESSAGE_2("Attempt to read from unattached PTR[0x%02x]. 0x00 returned.", port); |
| 658 | } |
| 659 | return 0x00; |
| 660 | } |
| 661 | if ((ch = getc(ptr_unit.fileref)) == EOF) { /* end of file? */ |
| 662 | ptr_unit.u3 = TRUE; /* remember EOF reached */ |
| 663 | return CONTROLZ_CHAR; /* ^Z denotes end of text file in CP/M */ |
| 664 | } |
| 665 | return ch & 0xff; |
| 666 | } /* OUT follows */ |
| 667 | if (ptp_unit.flags & UNIT_ATT) /* unit must be attached */ |
| 668 | putc(data, ptp_unit.fileref); |
| 669 | /* else ignore data */ |
| 670 | else if ((sio_unit.flags & UNIT_SIO_VERBOSE) && (warnUnattachedPTP < warnLevelSIO)) { |
| 671 | warnUnattachedPTP++; |
| 672 | /*09*/ MESSAGE_3("Attempt to output '0x%02x' to unattached PTP[0x%02x] - ignored.", data, port); |
| 673 | } |
| 674 | return 0x00; /* ignored since OUT */ |
| 675 | } |
| 676 | |
| 677 | static t_stat toBool(char tf, int *result) { |
| 678 | if (tf == 'T') { |
| 679 | *result = TRUE; |
| 680 | return SCPE_OK; |
| 681 | } |
| 682 | if (tf == 'F') { |
| 683 | *result = FALSE; |
| 684 | return SCPE_OK; |
| 685 | } |
| 686 | return SCPE_ARG; |
| 687 | } |
| 688 | |
| 689 | static void show_sio_port_info(FILE *st, SIO_PORT_INFO sip) { |
| 690 | if (sio_unit.flags & UNIT_SIO_VERBOSE) |
| 691 | fprintf(st, "(Port=%02x/Terminal=%1i/Read=0x%02x/NotRead=0x%02x/" |
| 692 | "Write=0x%02x/Reset?=%s/Reset=0x%02x/Data?=%s)", |
| 693 | sip.port, sip.terminalLine, sip.sio_can_read, sip.sio_cannot_read, |
| 694 | sip.sio_can_write, sip.hasReset ? "True" : "False", sip.sio_reset, |
| 695 | sip.hasOUT ? "True" : "False"); |
| 696 | else |
| 697 | fprintf(st, "(%02x/%1i/%02x/%02x/%02x/%s/%02x/%s)", |
| 698 | sip.port, sip.terminalLine, sip.sio_can_read, sip.sio_cannot_read, |
| 699 | sip.sio_can_write, sip.hasReset ? "T" : "F", sip.sio_reset, |
| 700 | sip.hasOUT ? "T" : "F"); |
| 701 | } |
| 702 | |
| 703 | static uint32 equalSIP(SIO_PORT_INFO x, SIO_PORT_INFO y) { |
| 704 | /* isBuiltin is not relevant for equality, only for display */ |
| 705 | return (x.port == y.port) && (x.terminalLine == y.terminalLine) && |
| 706 | (x.sio_can_read == y.sio_can_read) && (x.sio_cannot_read == y.sio_cannot_read) && |
| 707 | (x.sio_can_write == y.sio_can_write) && (x.hasReset == y.hasReset) && |
| 708 | (x.sio_reset == y.sio_reset) && (x.hasOUT == y.hasOUT); |
| 709 | } |
| 710 | |
| 711 | static t_stat sio_dev_set_port(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 712 | int32 result, n, position; |
| 713 | SIO_PORT_INFO sip = { 0 }, old; |
| 714 | char hasReset, hasOUT; |
| 715 | if (cptr == NULL) return SCPE_ARG; |
| 716 | result = sscanf(cptr, "%x%n", &sip.port, &n); |
| 717 | if ((result == 1) && (cptr[n] == 0)) { |
| 718 | old = lookupPortInfo(sip.port, &position); |
| 719 | if (old.port == -1) { |
| 720 | printf("No mapping for port 0x%02x exists - cannot remove.\n", sip.port); |
| 721 | return SCPE_ARG; |
| 722 | } |
| 723 | do { |
| 724 | port_table[position] = port_table[position + 1]; |
| 725 | position++; |
| 726 | } |
| 727 | while (port_table[position].port != -1); |
| 728 | sim_map_resource(sip.port, 1, RESOURCE_TYPE_IO, &nulldev, FALSE); |
| 729 | if (sio_unit.flags & UNIT_SIO_VERBOSE) { |
| 730 | printf("Removing mapping for port 0x%02x.\n\t", sip.port); |
| 731 | show_sio_port_info(stdout, old); |
| 732 | } |
| 733 | return SCPE_OK; |
| 734 | } |
| 735 | result = sscanf(cptr, "%x/%d/%x/%x/%x/%1c/%x/%1c%n", &sip.port, |
| 736 | &sip.terminalLine, &sip.sio_can_read, &sip.sio_cannot_read, |
| 737 | &sip.sio_can_write, &hasReset, &sip.sio_reset, &hasOUT, &n); |
| 738 | if ((result != 8) || (result == EOF) || (cptr[n] != 0)) return SCPE_ARG; |
| 739 | result = toBool(hasReset, &sip.hasReset); |
| 740 | if (result != SCPE_OK) return result; |
| 741 | result = toBool(hasOUT, &sip.hasOUT); |
| 742 | if (result != SCPE_OK) return result; |
| 743 | if (sip.port != (sip.port & 0xff)) { |
| 744 | printf("Truncating port 0x%x to 0x%02x.\n", sip.port, sip.port & 0xff); |
| 745 | sip.port &= 0xff; |
| 746 | } |
| 747 | old = lookupPortInfo(sip.port, &position); |
| 748 | if (old.port == sip.port) { |
| 749 | if (sio_unit.flags & UNIT_SIO_VERBOSE) { |
| 750 | printf("Replacing mapping for port 0x%02x.\n\t", sip.port); |
| 751 | show_sio_port_info(stdout, old); |
| 752 | printf("-> "); |
| 753 | show_sio_port_info(stdout, sip); |
| 754 | if (equalSIP(sip, old)) printf("[identical]"); |
| 755 | } |
| 756 | } |
| 757 | else { |
| 758 | port_table[position + 1] = old; |
| 759 | if (sio_unit.flags & UNIT_SIO_VERBOSE) { |
| 760 | printf("Adding mapping for port 0x%02x.\n\t", sip.port); |
| 761 | show_sio_port_info(stdout, sip); |
| 762 | } |
| 763 | } |
| 764 | if (sio_unit.flags & UNIT_SIO_VERBOSE) printf("\n"); |
| 765 | port_table[position] = sip; |
| 766 | sim_map_resource(sip.port, 1, RESOURCE_TYPE_IO, (sip.hasOUT || |
| 767 | (sip.sio_can_read == 0) && (sip.sio_cannot_read == 0) && |
| 768 | (sip.sio_can_write == 0)) ? &sio0d : &sio0s, FALSE); |
| 769 | return SCPE_OK; |
| 770 | } |
| 771 | |
| 772 | static t_stat sio_dev_show_port(FILE *st, UNIT *uptr, int32 val, void *desc) { |
| 773 | int32 i, first = TRUE; |
| 774 | for (i = 0; port_table[i].port != -1; i++) |
| 775 | if (!port_table[i].isBuiltin) { |
| 776 | if (first) first = FALSE; |
| 777 | else fprintf(st, " "); |
| 778 | show_sio_port_info(st, port_table[i]); |
| 779 | } |
| 780 | if (first) fprintf(st, "no extra port"); |
| 781 | return SCPE_OK; |
| 782 | } |
| 783 | |
| 784 | static t_stat sio_dev_set_interrupton(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 785 | keyboardInterrupt = FALSE; |
| 786 | return sim_activate(&sio_unit, sio_unit.wait); /* activate unit */ |
| 787 | } |
| 788 | |
| 789 | static t_stat sio_dev_set_interruptoff(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 790 | keyboardInterrupt = FALSE; |
| 791 | sim_cancel(&sio_unit); |
| 792 | return SCPE_OK; |
| 793 | } |
| 794 | |
| 795 | static t_stat sio_svc(UNIT *uptr) { |
| 796 | if (sio0s(0, 0, 0) & KBD_HAS_CHAR) { |
| 797 | keyboardInterrupt = TRUE; |
| 798 | } |
| 799 | if (sio_unit.flags & UNIT_SIO_INTERRUPT) |
| 800 | sim_activate(&sio_unit, sio_unit.wait); /* activate unit */ |
| 801 | return SCPE_OK; |
| 802 | } |
| 803 | |
| 804 | int32 nulldev(const int32 port, const int32 io, const int32 data) { |
| 805 | if ((sio_unit.flags & UNIT_SIO_VERBOSE) && (warnUnassignedPort < warnLevelSIO)) { |
| 806 | warnUnassignedPort++; |
| 807 | if (io == 0) { |
| 808 | MESSAGE_2("Attempt to input from unassigned port 0x%04x - ignored.", port); |
| 809 | } |
| 810 | else { |
| 811 | MESSAGE_3("Attempt to output 0x%02x to unassigned port 0x%04x - ignored.", data, port); |
| 812 | } |
| 813 | } |
| 814 | return io == 0 ? 0xff : 0; |
| 815 | } |
| 816 | |
| 817 | int32 sr_dev(const int32 port, const int32 io, const int32 data) { |
| 818 | return io == 0 ? SR : 0; |
| 819 | } |
| 820 | |
| 821 | static int32 toBCD(const int32 x) { |
| 822 | return (x / 10) * 16 + (x % 10); |
| 823 | } |
| 824 | |
| 825 | static int32 fromBCD(const int32 x) { |
| 826 | return 10 * ((0xf0 & x) >> 4) + (0x0f & x); |
| 827 | } |
| 828 | |
| 829 | /* Z80 or 8080 programs communicate with the SIMH pseudo device via port 0xfe. |
| 830 | The following principles apply: |
| 831 | |
| 832 | 1) For commands that do not require parameters and do not return results |
| 833 | ld a,<cmd> |
| 834 | out (0feh),a |
| 835 | Special case is the reset command which needs to be send 128 times to make |
| 836 | sure that the internal state is properly reset. |
| 837 | |
| 838 | 2) For commands that require parameters and do not return results |
| 839 | ld a,<cmd> |
| 840 | out (0feh),a |
| 841 | ld a,<p1> |
| 842 | out (0feh),a |
| 843 | ld a,<p2> |
| 844 | out (0feh),a |
| 845 | ... |
| 846 | Note: The calling program must send all parameter bytes. Otherwise |
| 847 | the pseudo device is left in an undefined state. |
| 848 | |
| 849 | 3) For commands that do not require parameters and return results |
| 850 | ld a,<cmd> |
| 851 | out (0feh),a |
| 852 | in a,(0feh) ; <A> contains first byte of result |
| 853 | in a,(0feh) ; <A> contains second byte of result |
| 854 | ... |
| 855 | Note: The calling program must request all bytes of the result. Otherwise |
| 856 | the pseudo device is left in an undefined state. |
| 857 | |
| 858 | 4) Commands requiring parameters and returning results do not exist currently. |
| 859 | |
| 860 | */ |
| 861 | |
| 862 | enum simhPseudoDeviceCommands { /* do not change order or remove commands, add only at the end */ |
| 863 | printTimeCmd, /* 0 print the current time in milliseconds */ |
| 864 | startTimerCmd, /* 1 start a new timer on the top of the timer stack */ |
| 865 | stopTimerCmd, /* 2 stop timer on top of timer stack and show time difference */ |
| 866 | resetPTRCmd, /* 3 reset the PTR device */ |
| 867 | attachPTRCmd, /* 4 attach the PTR device */ |
| 868 | detachPTRCmd, /* 5 detach the PTR device */ |
| 869 | getSIMHVersionCmd, /* 6 get the current version of the SIMH pseudo device */ |
| 870 | getClockZSDOSCmd, /* 7 get the current time in ZSDOS format */ |
| 871 | setClockZSDOSCmd, /* 8 set the current time in ZSDOS format */ |
| 872 | getClockCPM3Cmd, /* 9 get the current time in CP/M 3 format */ |
| 873 | setClockCPM3Cmd, /* 10 set the current time in CP/M 3 format */ |
| 874 | getBankSelectCmd, /* 11 get the selected bank */ |
| 875 | setBankSelectCmd, /* 12 set the selected bank */ |
| 876 | getCommonCmd, /* 13 get the base address of the common memory segment */ |
| 877 | resetSIMHInterfaceCmd, /* 14 reset the SIMH pseudo device */ |
| 878 | showTimerCmd, /* 15 show time difference to timer on top of stack */ |
| 879 | attachPTPCmd, /* 16 attach PTP to the file with name at beginning of CP/M command line*/ |
| 880 | detachPTPCmd, /* 17 detach PTP */ |
| 881 | hasBankedMemoryCmd, /* 18 determines whether machine has banked memory */ |
| 882 | setZ80CPUCmd, /* 19 set the CPU to a Z80 */ |
| 883 | set8080CPUCmd, /* 20 set the CPU to an 8080 */ |
| 884 | startTimerInterruptsCmd, /* 21 start timer interrupts */ |
| 885 | stopTimerInterruptsCmd, /* 22 stop timer interrupts */ |
| 886 | setTimerDeltaCmd, /* 23 set the timer interval in which interrupts occur */ |
| 887 | setTimerInterruptAdrCmd, /* 24 set the address to call by timer interrupts */ |
| 888 | resetStopWatchCmd, /* 25 reset the millisecond stop watch */ |
| 889 | readStopWatchCmd, /* 26 read the millisecond stop watch */ |
| 890 | SIMHSleepCmd, /* 27 let SIMH sleep for SIMHSleep microseconds */ |
| 891 | getHostOSPathSeparator, /* 28 obtain the file path separator of the OS under which SIMH runs */ |
| 892 | getHostFilenames /* 29 perform wildcard expansion and obtain list of file names */ |
| 893 | }; |
| 894 | |
| 895 | #define CPM_COMMAND_LINE_LENGTH 128 |
| 896 | #define TIMER_STACK_LIMIT 10 /* stack depth of timer stack */ |
| 897 | static uint32 markTime[TIMER_STACK_LIMIT]; /* timer stack */ |
| 898 | static struct tm currentTime; |
| 899 | static int32 currentTimeValid = FALSE; |
| 900 | static char version[] = "SIMH003"; |
| 901 | |
| 902 | static t_stat simh_dev_reset(DEVICE *dptr) { |
| 903 | currentTimeValid = FALSE; |
| 904 | ClockZSDOSDelta = 0; |
| 905 | setClockZSDOSPos = 0; |
| 906 | getClockZSDOSPos = 0; |
| 907 | ClockCPM3Delta = 0; |
| 908 | setClockCPM3Pos = 0; |
| 909 | getClockCPM3Pos = 0; |
| 910 | getStopWatchDeltaPos = 0; |
| 911 | getCommonPos = 0; |
| 912 | setTimerDeltaPos = 0; |
| 913 | setTimerInterruptAdrPos = 0; |
| 914 | markTimeSP = 0; |
| 915 | versionPos = 0; |
| 916 | lastCommand = 0; |
| 917 | lastCPMStatus = SCPE_OK; |
| 918 | timerInterrupt = FALSE; |
| 919 | if (simh_unit.flags & UNIT_SIMH_TIMERON) |
| 920 | simh_dev_set_timeron(NULL, 0, NULL, NULL); |
| 921 | return SCPE_OK; |
| 922 | } |
| 923 | |
| 924 | static void warnNoRealTimeClock(void) { |
| 925 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 926 | MESSAGE_1("Sorry - no real time clock available."); |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | static t_stat simh_dev_set_timeron(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 931 | if (rtc_avail) { |
| 932 | timeOfNextInterrupt = sim_os_msec() + timerDelta; |
| 933 | return sim_activate(&simh_unit, simh_unit.wait); /* activate unit */ |
| 934 | } |
| 935 | warnNoRealTimeClock(); |
| 936 | return SCPE_ARG; |
| 937 | } |
| 938 | |
| 939 | static t_stat simh_dev_set_timeroff(UNIT *uptr, int32 value, char *cptr, void *desc) { |
| 940 | timerInterrupt = FALSE; |
| 941 | sim_cancel(&simh_unit); |
| 942 | return SCPE_OK; |
| 943 | } |
| 944 | |
| 945 | static t_stat simh_svc(UNIT *uptr) { |
| 946 | uint32 n = sim_os_msec(); |
| 947 | if (n >= timeOfNextInterrupt) { |
| 948 | timerInterrupt = TRUE; |
| 949 | timeOfNextInterrupt += timerDelta; |
| 950 | if (n >= timeOfNextInterrupt) /* time of next interrupt is not in the future */ |
| 951 | timeOfNextInterrupt = n + timerDelta; /* make sure it is in the future! */ |
| 952 | } |
| 953 | if (simh_unit.flags & UNIT_SIMH_TIMERON) |
| 954 | sim_activate(&simh_unit, simh_unit.wait); /* activate unit */ |
| 955 | return SCPE_OK; |
| 956 | } |
| 957 | |
| 958 | static char cpmCommandLine[CPM_COMMAND_LINE_LENGTH]; |
| 959 | static void createCPMCommandLine(void) { |
| 960 | int32 i, len = (GetBYTEWrapper(0x80) & 0x7f); /* 0x80 contains length of command line, discard first char */ |
| 961 | for (i = 0; i < len - 1; i++) |
| 962 | cpmCommandLine[i] = (char)GetBYTEWrapper(0x82 + i); /* the first char, typically ' ', is discarded */ |
| 963 | cpmCommandLine[i] = 0; /* make C string */ |
| 964 | } |
| 965 | |
| 966 | /* The CP/M command line is used as the name of a file and UNIT* uptr is attached to it. */ |
| 967 | static void attachCPM(UNIT *uptr) { |
| 968 | createCPMCommandLine(); |
| 969 | if (uptr == &ptr_unit) |
| 970 | sim_switches = SWMASK('R'); |
| 971 | else if (uptr == &ptp_unit) |
| 972 | sim_switches = SWMASK('W') | SWMASK('C'); /* 'C' option makes sure that file is properly truncated |
| 973 | if it had existed before */ |
| 974 | lastCPMStatus = attach_unit(uptr, cpmCommandLine); |
| 975 | if ((lastCPMStatus != SCPE_OK) && (simh_unit.flags & UNIT_SIMH_VERBOSE)) { |
| 976 | MESSAGE_3("Cannot open '%s' (%s).", cpmCommandLine, scp_error_messages[lastCPMStatus - SCPE_BASE]); |
| 977 | /* must keep curly braces as MESSAGE_N is a macro with two statements */ |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | /* setClockZSDOSAdr points to 6 byte block in M: YY MM DD HH MM SS in BCD notation */ |
| 982 | static void setClockZSDOS(void) { |
| 983 | struct tm newTime; |
| 984 | int32 year = fromBCD(GetBYTEWrapper(setClockZSDOSAdr)); |
| 985 | newTime.tm_year = year < 50 ? year + 100 : year; |
| 986 | newTime.tm_mon = fromBCD(GetBYTEWrapper(setClockZSDOSAdr + 1)) - 1; |
| 987 | newTime.tm_mday = fromBCD(GetBYTEWrapper(setClockZSDOSAdr + 2)); |
| 988 | newTime.tm_hour = fromBCD(GetBYTEWrapper(setClockZSDOSAdr + 3)); |
| 989 | newTime.tm_min = fromBCD(GetBYTEWrapper(setClockZSDOSAdr + 4)); |
| 990 | newTime.tm_sec = fromBCD(GetBYTEWrapper(setClockZSDOSAdr + 5)); |
| 991 | ClockZSDOSDelta = mktime(&newTime) - time(NULL); |
| 992 | } |
| 993 | |
| 994 | #define SECONDS_PER_MINUTE 60 |
| 995 | #define SECONDS_PER_HOUR (60 * SECONDS_PER_MINUTE) |
| 996 | #define SECONDS_PER_DAY (24 * SECONDS_PER_HOUR) |
| 997 | static time_t mkCPM3Origin(void) { |
| 998 | struct tm date; |
| 999 | date.tm_year = 77; |
| 1000 | date.tm_mon = 11; |
| 1001 | date.tm_mday = 31; |
| 1002 | date.tm_hour = 0; |
| 1003 | date.tm_min = 0; |
| 1004 | date.tm_sec = 0; |
| 1005 | return mktime(&date); |
| 1006 | } |
| 1007 | |
| 1008 | /* setClockCPM3Adr points to 5 byte block in M: |
| 1009 | 0 - 1 int16: days since 31 Dec 77 |
| 1010 | 2 BCD byte: HH |
| 1011 | 3 BCD byte: MM |
| 1012 | 4 BCD byte: SS */ |
| 1013 | static void setClockCPM3(void) { |
| 1014 | ClockCPM3Delta = mkCPM3Origin() + |
| 1015 | (GetBYTEWrapper(setClockCPM3Adr) + GetBYTEWrapper(setClockCPM3Adr + 1) * 256) * SECONDS_PER_DAY + |
| 1016 | fromBCD(GetBYTEWrapper(setClockCPM3Adr + 2)) * SECONDS_PER_HOUR + |
| 1017 | fromBCD(GetBYTEWrapper(setClockCPM3Adr + 3)) * SECONDS_PER_MINUTE + |
| 1018 | fromBCD(GetBYTEWrapper(setClockCPM3Adr + 4)) - time(NULL); |
| 1019 | } |
| 1020 | |
| 1021 | static int32 simh_in(const int32 port) { |
| 1022 | int32 result = 0; |
| 1023 | switch(lastCommand) { |
| 1024 | |
| 1025 | case getHostFilenames: |
| 1026 | #if UNIX_PLATFORM |
| 1027 | if (globValid) |
| 1028 | if (globPosNameList < globS.gl_pathc) { |
| 1029 | if (!(result = globS.gl_pathv[globPosNameList][globPosName++])) { |
| 1030 | globPosNameList++; |
| 1031 | globPosName = 0; |
| 1032 | } |
| 1033 | } |
| 1034 | else { |
| 1035 | globValid = FALSE; |
| 1036 | lastCommand = 0; |
| 1037 | globfree(&globS); |
| 1038 | } |
| 1039 | #elif defined (_WIN32) |
| 1040 | if (globValid) |
| 1041 | if (globFinished) |
| 1042 | globValid = FALSE; |
| 1043 | else if (!(result = FindFileData.cFileName[globPosName++])) { |
| 1044 | globPosName = 0; |
| 1045 | if (!FindNextFile(hFind, &FindFileData)) { |
| 1046 | globFinished = TRUE; |
| 1047 | FindClose(hFind); |
| 1048 | hFind = INVALID_HANDLE_VALUE; |
| 1049 | } |
| 1050 | } |
| 1051 | #else |
| 1052 | lastCommand = 0; |
| 1053 | #endif |
| 1054 | break; |
| 1055 | |
| 1056 | case attachPTRCmd: |
| 1057 | |
| 1058 | case attachPTPCmd: |
| 1059 | result = lastCPMStatus; |
| 1060 | lastCommand = 0; |
| 1061 | break; |
| 1062 | |
| 1063 | case getClockZSDOSCmd: |
| 1064 | if (currentTimeValid) |
| 1065 | switch(getClockZSDOSPos) { |
| 1066 | |
| 1067 | case 0: |
| 1068 | result = toBCD(currentTime.tm_year > 99 ? |
| 1069 | currentTime.tm_year - 100 : currentTime.tm_year); |
| 1070 | getClockZSDOSPos = 1; |
| 1071 | break; |
| 1072 | |
| 1073 | case 1: |
| 1074 | result = toBCD(currentTime.tm_mon + 1); |
| 1075 | getClockZSDOSPos = 2; |
| 1076 | break; |
| 1077 | |
| 1078 | case 2: |
| 1079 | result = toBCD(currentTime.tm_mday); |
| 1080 | getClockZSDOSPos = 3; |
| 1081 | break; |
| 1082 | |
| 1083 | case 3: |
| 1084 | result = toBCD(currentTime.tm_hour); |
| 1085 | getClockZSDOSPos = 4; |
| 1086 | break; |
| 1087 | |
| 1088 | case 4: |
| 1089 | result = toBCD(currentTime.tm_min); |
| 1090 | getClockZSDOSPos = 5; |
| 1091 | break; |
| 1092 | |
| 1093 | case 5: |
| 1094 | result = toBCD(currentTime.tm_sec); |
| 1095 | getClockZSDOSPos = lastCommand = 0; |
| 1096 | break; |
| 1097 | } |
| 1098 | else |
| 1099 | result = getClockZSDOSPos = lastCommand = 0; |
| 1100 | break; |
| 1101 | |
| 1102 | case getClockCPM3Cmd: |
| 1103 | if (currentTimeValid) |
| 1104 | switch(getClockCPM3Pos) { |
| 1105 | case 0: |
| 1106 | result = daysCPM3SinceOrg & 0xff; |
| 1107 | getClockCPM3Pos = 1; |
| 1108 | break; |
| 1109 | |
| 1110 | case 1: |
| 1111 | result = (daysCPM3SinceOrg >> 8) & 0xff; |
| 1112 | getClockCPM3Pos = 2; |
| 1113 | break; |
| 1114 | |
| 1115 | case 2: |
| 1116 | result = toBCD(currentTime.tm_hour); |
| 1117 | getClockCPM3Pos = 3; |
| 1118 | break; |
| 1119 | |
| 1120 | case 3: |
| 1121 | result = toBCD(currentTime.tm_min); |
| 1122 | getClockCPM3Pos = 4; |
| 1123 | break; |
| 1124 | |
| 1125 | case 4: |
| 1126 | result = toBCD(currentTime.tm_sec); |
| 1127 | getClockCPM3Pos = lastCommand = 0; |
| 1128 | break; |
| 1129 | } |
| 1130 | else |
| 1131 | result = getClockCPM3Pos = lastCommand = 0; |
| 1132 | break; |
| 1133 | |
| 1134 | case getSIMHVersionCmd: |
| 1135 | result = version[versionPos++]; |
| 1136 | if (result == 0) |
| 1137 | versionPos = lastCommand = 0; |
| 1138 | break; |
| 1139 | |
| 1140 | case getBankSelectCmd: |
| 1141 | if (cpu_unit.flags & UNIT_CPU_BANKED) |
| 1142 | result = getBankSelect(); |
| 1143 | else { |
| 1144 | result = 0; |
| 1145 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1146 | MESSAGE_1("Get selected bank ignored for non-banked memory."); |
| 1147 | } |
| 1148 | } |
| 1149 | lastCommand = 0; |
| 1150 | break; |
| 1151 | |
| 1152 | case getCommonCmd: |
| 1153 | if (getCommonPos == 0) { |
| 1154 | result = getCommon() & 0xff; |
| 1155 | getCommonPos = 1; |
| 1156 | } |
| 1157 | else { |
| 1158 | result = (getCommon() >> 8) & 0xff; |
| 1159 | getCommonPos = lastCommand = 0; |
| 1160 | } |
| 1161 | break; |
| 1162 | |
| 1163 | case hasBankedMemoryCmd: |
| 1164 | result = cpu_unit.flags & UNIT_CPU_BANKED ? MAXBANKS : 0; |
| 1165 | lastCommand = 0; |
| 1166 | break; |
| 1167 | |
| 1168 | case readStopWatchCmd: |
| 1169 | if (getStopWatchDeltaPos == 0) { |
| 1170 | result = stopWatchDelta & 0xff; |
| 1171 | getStopWatchDeltaPos = 1; |
| 1172 | } |
| 1173 | else { |
| 1174 | result = (stopWatchDelta >> 8) & 0xff; |
| 1175 | getStopWatchDeltaPos = lastCommand = 0; |
| 1176 | } |
| 1177 | break; |
| 1178 | |
| 1179 | case getHostOSPathSeparator: |
| 1180 | #if defined (__MWERKS__) && defined (macintosh) |
| 1181 | result = ':'; /* colon on Macintosh OS 9 */ |
| 1182 | #elif defined (_WIN32) |
| 1183 | result = '\\'; /* back slash in Windows */ |
| 1184 | #else |
| 1185 | result = '/'; /* slash in UNIX */ |
| 1186 | #endif |
| 1187 | break; |
| 1188 | |
| 1189 | default: |
| 1190 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1191 | MESSAGE_2("Undefined IN from SIMH pseudo device on port %03xh ignored.", |
| 1192 | port); |
| 1193 | } |
| 1194 | result = lastCommand = 0; |
| 1195 | } |
| 1196 | return result; |
| 1197 | } |
| 1198 | |
| 1199 | void do_SIMH_sleep(void) { |
| 1200 | #if defined (_WIN32) |
| 1201 | if ((SIMHSleep / 1000) && !sio_unit.u4) /* time to sleep and SIO not attached to a file */ |
| 1202 | Sleep(SIMHSleep / 1000); |
| 1203 | #else |
| 1204 | if (SIMHSleep && !sio_unit.u4) /* time to sleep and SIO not attached to a file */ |
| 1205 | usleep(SIMHSleep); |
| 1206 | #endif |
| 1207 | } |
| 1208 | |
| 1209 | static int32 simh_out(const int32 port, const int32 data) { |
| 1210 | time_t now; |
| 1211 | switch(lastCommand) { |
| 1212 | |
| 1213 | case setClockZSDOSCmd: |
| 1214 | if (setClockZSDOSPos == 0) { |
| 1215 | setClockZSDOSAdr = data; |
| 1216 | setClockZSDOSPos = 1; |
| 1217 | } |
| 1218 | else { |
| 1219 | setClockZSDOSAdr |= (data << 8); |
| 1220 | setClockZSDOS(); |
| 1221 | setClockZSDOSPos = lastCommand = 0; |
| 1222 | } |
| 1223 | break; |
| 1224 | |
| 1225 | case setClockCPM3Cmd: |
| 1226 | if (setClockCPM3Pos == 0) { |
| 1227 | setClockCPM3Adr = data; |
| 1228 | setClockCPM3Pos = 1; |
| 1229 | } |
| 1230 | else { |
| 1231 | setClockCPM3Adr |= (data << 8); |
| 1232 | setClockCPM3(); |
| 1233 | setClockCPM3Pos = lastCommand = 0; |
| 1234 | } |
| 1235 | break; |
| 1236 | |
| 1237 | case setBankSelectCmd: |
| 1238 | if (cpu_unit.flags & UNIT_CPU_BANKED) |
| 1239 | setBankSelect(data & BANKMASK); |
| 1240 | else if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1241 | MESSAGE_2("Set selected bank to %i ignored for non-banked memory.", data & 3); |
| 1242 | } |
| 1243 | lastCommand = 0; |
| 1244 | break; |
| 1245 | |
| 1246 | case setTimerDeltaCmd: |
| 1247 | if (setTimerDeltaPos == 0) { |
| 1248 | timerDelta = data; |
| 1249 | setTimerDeltaPos = 1; |
| 1250 | } |
| 1251 | else { |
| 1252 | timerDelta |= (data << 8); |
| 1253 | setTimerDeltaPos = lastCommand = 0; |
| 1254 | } |
| 1255 | break; |
| 1256 | |
| 1257 | case setTimerInterruptAdrCmd: |
| 1258 | if (setTimerInterruptAdrPos == 0) { |
| 1259 | timerInterruptHandler = data; |
| 1260 | setTimerInterruptAdrPos = 1; |
| 1261 | } |
| 1262 | else { |
| 1263 | timerInterruptHandler |= (data << 8); |
| 1264 | setTimerInterruptAdrPos = lastCommand = 0; |
| 1265 | } |
| 1266 | break; |
| 1267 | |
| 1268 | default: |
| 1269 | lastCommand = data; |
| 1270 | switch(data) { |
| 1271 | |
| 1272 | case getHostFilenames: |
| 1273 | #if UNIX_PLATFORM |
| 1274 | if (!globValid) { |
| 1275 | globValid = TRUE; |
| 1276 | globPosNameList = globPosName = 0; |
| 1277 | createCPMCommandLine(); |
| 1278 | globError = glob(cpmCommandLine, GLOB_ERR, NULL, &globS); |
| 1279 | if (globError) { |
| 1280 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1281 | MESSAGE_3("Cannot expand '%s'. Error is %i.", cpmCommandLine, globError); |
| 1282 | } |
| 1283 | globfree(&globS); |
| 1284 | globValid = FALSE; |
| 1285 | } |
| 1286 | } |
| 1287 | #elif defined (_WIN32) |
| 1288 | if (!globValid) { |
| 1289 | globValid = TRUE; |
| 1290 | globPosName = 0; |
| 1291 | globFinished = FALSE; |
| 1292 | createCPMCommandLine(); |
| 1293 | hFind = FindFirstFile(cpmCommandLine, &FindFileData); |
| 1294 | if (hFind == INVALID_HANDLE_VALUE) { |
| 1295 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1296 | MESSAGE_3("Cannot expand '%s'. Error is %lu.", cpmCommandLine, GetLastError()); |
| 1297 | } |
| 1298 | globValid = FALSE; |
| 1299 | } |
| 1300 | } |
| 1301 | #endif |
| 1302 | break; |
| 1303 | |
| 1304 | case SIMHSleepCmd: |
| 1305 | do_SIMH_sleep(); |
| 1306 | break; |
| 1307 | |
| 1308 | case printTimeCmd: /* print time */ |
| 1309 | if (rtc_avail) { |
| 1310 | MESSAGE_2("Current time in milliseconds = %d.", sim_os_msec()); |
| 1311 | } |
| 1312 | else { |
| 1313 | warnNoRealTimeClock(); |
| 1314 | } |
| 1315 | break; |
| 1316 | |
| 1317 | case startTimerCmd: /* create a new timer on top of stack */ |
| 1318 | if (rtc_avail) |
| 1319 | if (markTimeSP < TIMER_STACK_LIMIT) |
| 1320 | markTime[markTimeSP++] = sim_os_msec(); |
| 1321 | else { |
| 1322 | MESSAGE_1("Timer stack overflow."); |
| 1323 | } |
| 1324 | else warnNoRealTimeClock(); |
| 1325 | break; |
| 1326 | |
| 1327 | case stopTimerCmd: /* stop timer on top of stack and show time difference */ |
| 1328 | if (rtc_avail) |
| 1329 | if (markTimeSP > 0) { |
| 1330 | uint32 delta = sim_os_msec() - markTime[--markTimeSP]; |
| 1331 | MESSAGE_2("Timer stopped. Elapsed time in milliseconds = %d.", delta); |
| 1332 | } |
| 1333 | else { |
| 1334 | MESSAGE_1("No timer active."); |
| 1335 | } |
| 1336 | else warnNoRealTimeClock(); |
| 1337 | break; |
| 1338 | |
| 1339 | case resetPTRCmd: /* reset ptr device */ |
| 1340 | ptr_reset(NULL); |
| 1341 | break; |
| 1342 | |
| 1343 | case attachPTRCmd: /* attach ptr to the file with name at beginning of CP/M command line */ |
| 1344 | attachCPM(&ptr_unit); |
| 1345 | break; |
| 1346 | |
| 1347 | case detachPTRCmd: /* detach ptr */ |
| 1348 | detach_unit(&ptr_unit); |
| 1349 | break; |
| 1350 | |
| 1351 | case getSIMHVersionCmd: |
| 1352 | versionPos = 0; |
| 1353 | break; |
| 1354 | |
| 1355 | case getClockZSDOSCmd: |
| 1356 | time(&now); |
| 1357 | now += ClockZSDOSDelta; |
| 1358 | currentTime = *localtime(&now); |
| 1359 | currentTimeValid = TRUE; |
| 1360 | getClockZSDOSPos = 0; |
| 1361 | break; |
| 1362 | |
| 1363 | case setClockZSDOSCmd: |
| 1364 | setClockZSDOSPos = 0; |
| 1365 | break; |
| 1366 | |
| 1367 | case getClockCPM3Cmd: |
| 1368 | time(&now); |
| 1369 | now += ClockCPM3Delta; |
| 1370 | currentTime = *localtime(&now); |
| 1371 | currentTimeValid = TRUE; |
| 1372 | daysCPM3SinceOrg = (int32) ((now - mkCPM3Origin()) / SECONDS_PER_DAY); |
| 1373 | getClockCPM3Pos = 0; |
| 1374 | break; |
| 1375 | |
| 1376 | case setClockCPM3Cmd: |
| 1377 | setClockCPM3Pos = 0; |
| 1378 | break; |
| 1379 | |
| 1380 | case getBankSelectCmd: |
| 1381 | case setBankSelectCmd: |
| 1382 | case getCommonCmd: |
| 1383 | case hasBankedMemoryCmd: |
| 1384 | case getHostOSPathSeparator: |
| 1385 | break; |
| 1386 | |
| 1387 | case resetSIMHInterfaceCmd: |
| 1388 | markTimeSP = 0; |
| 1389 | lastCommand = 0; |
| 1390 | #if UNIX_PLATFORM |
| 1391 | if (globValid) { |
| 1392 | globValid = FALSE; |
| 1393 | globfree(&globS); |
| 1394 | } |
| 1395 | #elif defined (_WIN32) |
| 1396 | if (globValid) { |
| 1397 | globValid = FALSE; |
| 1398 | if (hFind != INVALID_HANDLE_VALUE) { |
| 1399 | FindClose(hFind); |
| 1400 | } |
| 1401 | } |
| 1402 | #endif |
| 1403 | break; |
| 1404 | |
| 1405 | case showTimerCmd: /* show time difference to timer on top of stack */ |
| 1406 | if (rtc_avail) |
| 1407 | if (markTimeSP > 0) { |
| 1408 | uint32 delta = sim_os_msec() - markTime[markTimeSP - 1]; |
| 1409 | MESSAGE_2("Timer running. Elapsed in milliseconds = %d.", delta); |
| 1410 | } |
| 1411 | else { |
| 1412 | MESSAGE_1("No timer active."); |
| 1413 | } |
| 1414 | else warnNoRealTimeClock(); |
| 1415 | break; |
| 1416 | |
| 1417 | case attachPTPCmd: /* attach ptp to the file with name at beginning of CP/M command line */ |
| 1418 | attachCPM(&ptp_unit); |
| 1419 | break; |
| 1420 | |
| 1421 | case detachPTPCmd: /* detach ptp */ |
| 1422 | detach_unit(&ptp_unit); |
| 1423 | break; |
| 1424 | |
| 1425 | case setZ80CPUCmd: |
| 1426 | chiptype = CHIP_TYPE_Z80; |
| 1427 | break; |
| 1428 | |
| 1429 | case set8080CPUCmd: |
| 1430 | chiptype = CHIP_TYPE_8080; |
| 1431 | break; |
| 1432 | |
| 1433 | case startTimerInterruptsCmd: |
| 1434 | if (simh_dev_set_timeron(NULL, 0, NULL, NULL) == SCPE_OK) { |
| 1435 | timerInterrupt = FALSE; |
| 1436 | simh_unit.flags |= UNIT_SIMH_TIMERON; |
| 1437 | } |
| 1438 | break; |
| 1439 | |
| 1440 | case stopTimerInterruptsCmd: |
| 1441 | simh_unit.flags &= ~UNIT_SIMH_TIMERON; |
| 1442 | simh_dev_set_timeroff(NULL, 0, NULL, NULL); |
| 1443 | break; |
| 1444 | |
| 1445 | case setTimerDeltaCmd: |
| 1446 | setTimerDeltaPos = 0; |
| 1447 | break; |
| 1448 | |
| 1449 | case setTimerInterruptAdrCmd: |
| 1450 | setTimerInterruptAdrPos = 0; |
| 1451 | break; |
| 1452 | |
| 1453 | case resetStopWatchCmd: |
| 1454 | stopWatchNow = rtc_avail ? sim_os_msec() : 0; |
| 1455 | break; |
| 1456 | |
| 1457 | case readStopWatchCmd: |
| 1458 | getStopWatchDeltaPos = 0; |
| 1459 | stopWatchDelta = rtc_avail ? sim_os_msec() - stopWatchNow : 0; |
| 1460 | break; |
| 1461 | |
| 1462 | default: |
| 1463 | if (simh_unit.flags & UNIT_SIMH_VERBOSE) { |
| 1464 | MESSAGE_3("Unknown command (%i) to SIMH pseudo device on port %03xh ignored.", |
| 1465 | data, port); |
| 1466 | } |
| 1467 | } |
| 1468 | } |
| 1469 | return 0x00; /* ignored, since OUT */ |
| 1470 | } |
| 1471 | |
| 1472 | /* port 0xfe is a device for communication SIMH <--> Altair machine */ |
| 1473 | int32 simh_dev(const int32 port, const int32 io, const int32 data) { |
| 1474 | return io == 0 ? simh_in(port) : simh_out(port, data); |
| 1475 | } |