[simh.git] / PDP8 / pdp8_pt.c

/* pdp8_pt.c: PDP-8 paper tape reader/punch simulator\r
\r
   Copyright (c) 1993-2005, Robert M Supnik\r
\r
   Permission is hereby granted, free of charge, to any person obtaining a\r
   copy of this software and associated documentation files (the "Software"),\r
   to deal in the Software without restriction, including without limitation\r
   the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
   and/or sell copies of the Software, and to permit persons to whom the\r
   Software is furnished to do so, subject to the following conditions:\r
\r
   The above copyright notice and this permission notice shall be included in\r
   all copies or substantial portions of the Software.\r
\r
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL\r
   ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
   IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
\r
   Except as contained in this notice, the name of Robert M Supnik shall not be\r
   used in advertising or otherwise to promote the sale, use or other dealings\r
   in this Software without prior written authorization from Robert M Supnik.\r
\r
   ptr,ptp      PC8E paper tape reader/punch\r
\r
   25-Apr-03    RMS     Revised for extended file support\r
   04-Oct-02    RMS     Added DIBs\r
   30-May-02    RMS     Widened POS to 32b\r
   30-Nov-01    RMS     Added read only unit support\r
   30-Mar-98    RMS     Added RIM loader as PTR bootstrap\r
*/\r
\r
#include "pdp8_defs.h"\r
\r
extern int32 int_req, int_enable, dev_done, stop_inst;\r
\r
int32 ptr_stopioe = 0, ptp_stopioe = 0;                 /* stop on error */\r
\r
int32 ptr (int32 IR, int32 AC);\r
int32 ptp (int32 IR, int32 AC);\r
t_stat ptr_svc (UNIT *uptr);\r
t_stat ptp_svc (UNIT *uptr);\r
t_stat ptr_reset (DEVICE *dptr);\r
t_stat ptp_reset (DEVICE *dptr);\r
t_stat ptr_boot (int32 unitno, DEVICE *dptr);\r
\r
/* PTR data structures\r
\r
   ptr_dev      PTR device descriptor\r
   ptr_unit     PTR unit descriptor\r
   ptr_reg      PTR register list\r
*/\r
\r
DIB ptr_dib = { DEV_PTR, 1, { &ptr } };\r
\r
UNIT ptr_unit = {\r
    UDATA (&ptr_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_ROABLE, 0),\r
           SERIAL_IN_WAIT\r
    };\r
\r
REG ptr_reg[] = {\r
    { ORDATA (BUF, ptr_unit.buf, 8) },\r
    { FLDATA (DONE, dev_done, INT_V_PTR) },\r
    { FLDATA (ENABLE, int_enable, INT_V_PTR) },\r
    { FLDATA (INT, int_req, INT_V_PTR) },\r
    { DRDATA (POS, ptr_unit.pos, T_ADDR_W), PV_LEFT },\r
    { DRDATA (TIME, ptr_unit.wait, 24), PV_LEFT },\r
    { FLDATA (STOP_IOE, ptr_stopioe, 0) },\r
    { NULL }\r
    };\r
\r
MTAB ptr_mod[] = {\r
    { MTAB_XTD|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev },\r
    { 0 }\r
    };\r
\r
DEVICE ptr_dev = {\r
    "PTR", &ptr_unit, ptr_reg, ptr_mod,\r
    1, 10, 31, 1, 8, 8,\r
    NULL, NULL, &ptr_reset,\r
    &ptr_boot, NULL, NULL,\r
    &ptr_dib, 0 };\r
\r
/* PTP data structures\r
\r
   ptp_dev      PTP device descriptor\r
   ptp_unit     PTP unit descriptor\r
   ptp_reg      PTP register list\r
*/\r
\r
DIB ptp_dib = { DEV_PTP, 1, { &ptp } };\r
\r
UNIT ptp_unit = {\r
    UDATA (&ptp_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT\r
    };\r
\r
REG ptp_reg[] = {\r
    { ORDATA (BUF, ptp_unit.buf, 8) },\r
    { FLDATA (DONE, dev_done, INT_V_PTP) },\r
    { FLDATA (ENABLE, int_enable, INT_V_PTP) },\r
    { FLDATA (INT, int_req, INT_V_PTP) },\r
    { DRDATA (POS, ptp_unit.pos, T_ADDR_W), PV_LEFT },\r
    { DRDATA (TIME, ptp_unit.wait, 24), PV_LEFT },\r
    { FLDATA (STOP_IOE, ptp_stopioe, 0) },\r
    { NULL }\r
    };\r
\r
MTAB ptp_mod[] = {\r
    { MTAB_XTD|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev },\r
    { 0 }\r
    };\r
\r
DEVICE ptp_dev = {\r
    "PTP", &ptp_unit, ptp_reg, ptp_mod,\r
    1, 10, 31, 1, 8, 8,\r
    NULL, NULL, &ptp_reset,\r
    NULL, NULL, NULL,\r
    &ptp_dib, 0\r
    };\r
\r
/* Paper tape reader: IOT routine */\r
\r
int32 ptr (int32 IR, int32 AC)\r
{\r
switch (IR & 07) {                                      /* decode IR<9:11> */\r
\r
    case 0:                                             /* RPE */\r
        int_enable = int_enable | (INT_PTR+INT_PTP);    /* set enable */\r
        int_req = INT_UPDATE;                           /* update interrupts */\r
        return AC;\r
\r
    case 1:                                             /* RSF */\r
        return (dev_done & INT_PTR)? IOT_SKP + AC: AC;  \r
\r
    case 6:                                             /* RFC!RRB */\r
        sim_activate (&ptr_unit, ptr_unit.wait);\r
    case 2:                                             /* RRB */\r
        dev_done = dev_done & ~INT_PTR;                 /* clear flag */\r
        int_req = int_req & ~INT_PTR;                   /* clear int req */\r
        return (AC | ptr_unit.buf);                     /* or data to AC */\r
\r
    case 4:                                             /* RFC */\r
        sim_activate (&ptr_unit, ptr_unit.wait);\r
        dev_done = dev_done & ~INT_PTR;                 /* clear flag */\r
        int_req = int_req & ~INT_PTR;                   /* clear int req */\r
        return AC;\r
\r
    default:\r
        return (stop_inst << IOT_V_REASON) + AC;\r
        }                                               /* end switch */\r
}\r
\r
/* Unit service */\r
\r
t_stat ptr_svc (UNIT *uptr)\r
{\r
int32 temp;\r
\r
if ((ptr_unit.flags & UNIT_ATT) == 0)                   /* attached? */\r
    return IORETURN (ptr_stopioe, SCPE_UNATT);\r
if ((temp = getc (ptr_unit.fileref)) == EOF) {\r
    if (feof (ptr_unit.fileref)) {\r
        if (ptr_stopioe) printf ("PTR end of file\n");\r
        else return SCPE_OK;\r
        }\r
    else perror ("PTR I/O error");\r
    clearerr (ptr_unit.fileref);\r
    return SCPE_IOERR;\r
    }\r
dev_done = dev_done | INT_PTR;                          /* set done */\r
int_req = INT_UPDATE;                                   /* update interrupts */\r
ptr_unit.buf = temp & 0377;\r
ptr_unit.pos = ptr_unit.pos + 1;\r
return SCPE_OK;\r
}\r
\r
/* Reset routine */\r
\r
t_stat ptr_reset (DEVICE *dptr)\r
{\r
ptr_unit.buf = 0;\r
dev_done = dev_done & ~INT_PTR;                         /* clear done, int */\r
int_req = int_req & ~INT_PTR;\r
int_enable = int_enable | INT_PTR;                      /* set enable */\r
sim_cancel (&ptr_unit);                                 /* deactivate unit */\r
return SCPE_OK;\r
}\r
\r
/* Paper tape punch: IOT routine */\r
\r
int32 ptp (int32 IR, int32 AC)\r
{\r
switch (IR & 07) {                                      /* decode IR<9:11> */\r
\r
    case 0:                                             /* PCE */\r
        int_enable = int_enable & ~(INT_PTR+INT_PTP);   /* clear enables */\r
        int_req = INT_UPDATE;                           /* update interrupts */\r
        return AC;\r
\r
    case 1:                                             /* PSF */\r
        return (dev_done & INT_PTP)? IOT_SKP + AC: AC;\r
\r
    case 2:                                             /* PCF */\r
        dev_done = dev_done & ~INT_PTP;                 /* clear flag */\r
        int_req = int_req & ~INT_PTP;                   /* clear int req */\r
        return AC;\r
\r
    case 6:                                             /* PLS */\r
        dev_done = dev_done & ~INT_PTP;                 /* clear flag */\r
        int_req = int_req & ~INT_PTP;                   /* clear int req */\r
    case 4:                                             /* PPC */\r
        ptp_unit.buf = AC & 0377;                       /* load punch buf */\r
        sim_activate (&ptp_unit, ptp_unit.wait);        /* activate unit */\r
        return AC;\r
\r
	default:\r
		return (stop_inst << IOT_V_REASON) + AC;\r
		}                                               /* end switch */\r
}\r
\r
/* Unit service */\r
\r
t_stat ptp_svc (UNIT *uptr)\r
{\r
dev_done = dev_done | INT_PTP;                          /* set done */\r
int_req = INT_UPDATE;                                   /* update interrupts */\r
if ((ptp_unit.flags & UNIT_ATT) == 0)                   /* attached? */\r
    return IORETURN (ptp_stopioe, SCPE_UNATT);\r
if (putc (ptp_unit.buf, ptp_unit.fileref) == EOF) {\r
    perror ("PTP I/O error");\r
    clearerr (ptp_unit.fileref);\r
    return SCPE_IOERR;\r
    }\r
ptp_unit.pos = ptp_unit.pos + 1;\r
return SCPE_OK;\r
}\r
\r
/* Reset routine */\r
\r
t_stat ptp_reset (DEVICE *dptr)\r
{\r
ptp_unit.buf = 0;\r
dev_done = dev_done & ~INT_PTP;                         /* clear done, int */\r
int_req = int_req & ~INT_PTP;\r
int_enable = int_enable | INT_PTP;                      /* set enable */\r
sim_cancel (&ptp_unit);                                 /* deactivate unit */\r
return SCPE_OK;\r
}\r
\r
/* Bootstrap routine */\r
\r
#define BOOT_START 07756\r
#define BOOT_LEN (sizeof (boot_rom) / sizeof (int16))\r
\r
static const uint16 boot_rom[] = {\r
    06014,                      /* 7756, RFC */\r
    06011,                      /* 7757, LOOP, RSF */\r
    05357,                      /* JMP .-1 */\r
    06016,                      /* RFC RRB */\r
    07106,                      /* CLL RTL*/\r
    07006,                      /* RTL */\r
    07510,                      /* SPA*/\r
    05374,                      /* JMP 7774 */\r
    07006,                      /* RTL */\r
    06011,                      /* RSF */\r
    05367,                      /* JMP .-1 */\r
    06016,                      /* RFC RRB */\r
    07420,                      /* SNL */\r
    03776,                      /* DCA I 7776 */\r
    03376,                      /* 7774, DCA 7776 */\r
    05357,                      /* JMP 7757 */\r
    00000,                      /* 7776, 0 */\r
    05301                       /* 7777, JMP 7701 */\r
    };\r
\r
t_stat ptr_boot (int32 unitno, DEVICE *dptr)\r
{\r
int32 i;\r
extern int32 saved_PC;\r
extern uint16 M[];\r
\r
if (ptr_dib.dev != DEV_PTR) return STOP_NOTSTD;         /* only std devno */\r
for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];\r
saved_PC = BOOT_START;\r
return SCPE_OK;\r
}\r
Commit	Line	Data
196ba1fc PH	1	/* pdp8_pt.c: PDP-8 paper tape reader/punch simulator\r
	2	\r
	3	Copyright (c) 1993-2005, Robert M Supnik\r
	4	\r
	5	Permission is hereby granted, free of charge, to any person obtaining a\r
	6	copy of this software and associated documentation files (the "Software"),\r
	7	to deal in the Software without restriction, including without limitation\r
	8	the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
	9	and/or sell copies of the Software, and to permit persons to whom the\r
	10	Software is furnished to do so, subject to the following conditions:\r
	11	\r
	12	The above copyright notice and this permission notice shall be included in\r
	13	all copies or substantial portions of the Software.\r
	14	\r
	15	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
	16	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
	17	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
	18	ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
	19	IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
	20	CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
	21	\r
	22	Except as contained in this notice, the name of Robert M Supnik shall not be\r
	23	used in advertising or otherwise to promote the sale, use or other dealings\r
	24	in this Software without prior written authorization from Robert M Supnik.\r
	25	\r
	26	ptr,ptp PC8E paper tape reader/punch\r
	27	\r
	28	25-Apr-03 RMS Revised for extended file support\r
	29	04-Oct-02 RMS Added DIBs\r
	30	30-May-02 RMS Widened POS to 32b\r
	31	30-Nov-01 RMS Added read only unit support\r
	32	30-Mar-98 RMS Added RIM loader as PTR bootstrap\r
	33	*/\r
	34	\r
	35	#include "pdp8_defs.h"\r
	36	\r
	37	extern int32 int_req, int_enable, dev_done, stop_inst;\r
	38	\r
	39	int32 ptr_stopioe = 0, ptp_stopioe = 0; /* stop on error */\r
	40	\r
	41	int32 ptr (int32 IR, int32 AC);\r
	42	int32 ptp (int32 IR, int32 AC);\r
	43	t_stat ptr_svc (UNIT *uptr);\r
	44	t_stat ptp_svc (UNIT *uptr);\r
	45	t_stat ptr_reset (DEVICE *dptr);\r
	46	t_stat ptp_reset (DEVICE *dptr);\r
	47	t_stat ptr_boot (int32 unitno, DEVICE *dptr);\r
	48	\r
	49	/* PTR data structures\r
	50	\r
	51	ptr_dev PTR device descriptor\r
	52	ptr_unit PTR unit descriptor\r
	53	ptr_reg PTR register list\r
	54	*/\r
	55	\r
	56	DIB ptr_dib = { DEV_PTR, 1, { &ptr } };\r
	57	\r
	58	UNIT ptr_unit = {\r
	59	UDATA (&ptr_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_ROABLE, 0),\r
	60	SERIAL_IN_WAIT\r
	61	};\r
	62	\r
	63	REG ptr_reg[] = {\r
	64	{ ORDATA (BUF, ptr_unit.buf, 8) },\r
65	{ FLDATA (DONE, dev_done, INT_V_PTR) },\r
66	{ FLDATA (ENABLE, int_enable, INT_V_PTR) },\r
67	{ FLDATA (INT, int_req, INT_V_PTR) },\r
68	{ DRDATA (POS, ptr_unit.pos, T_ADDR_W), PV_LEFT },\r
69	{ DRDATA (TIME, ptr_unit.wait, 24), PV_LEFT },\r
70	{ FLDATA (STOP_IOE, ptr_stopioe, 0) },\r
71	{ NULL }\r
72	};\r
73	\r
74	MTAB ptr_mod[] = {\r
75	{ MTAB_XTD\|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev },\r
76	{ 0 }\r
77	};\r
78	\r
79	DEVICE ptr_dev = {\r
80	"PTR", &ptr_unit, ptr_reg, ptr_mod,\r
81	1, 10, 31, 1, 8, 8,\r
82	NULL, NULL, &ptr_reset,\r
83	&ptr_boot, NULL, NULL,\r
84	&ptr_dib, 0 };\r
85	\r
86	/* PTP data structures\r
87	\r
88	ptp_dev PTP device descriptor\r
89	ptp_unit PTP unit descriptor\r
90	ptp_reg PTP register list\r
91	*/\r
92	\r
93	DIB ptp_dib = { DEV_PTP, 1, { &ptp } };\r
94	\r
95	UNIT ptp_unit = {\r
96	UDATA (&ptp_svc, UNIT_SEQ+UNIT_ATTABLE, 0), SERIAL_OUT_WAIT\r
97	};\r
98	\r
99	REG ptp_reg[] = {\r
100	{ ORDATA (BUF, ptp_unit.buf, 8) },\r
101	{ FLDATA (DONE, dev_done, INT_V_PTP) },\r
102	{ FLDATA (ENABLE, int_enable, INT_V_PTP) },\r
103	{ FLDATA (INT, int_req, INT_V_PTP) },\r
104	{ DRDATA (POS, ptp_unit.pos, T_ADDR_W), PV_LEFT },\r
105	{ DRDATA (TIME, ptp_unit.wait, 24), PV_LEFT },\r
106	{ FLDATA (STOP_IOE, ptp_stopioe, 0) },\r
107	{ NULL }\r
108	};\r
109	\r
110	MTAB ptp_mod[] = {\r
111	{ MTAB_XTD\|MTAB_VDV, 0, "DEVNO", NULL, NULL, &show_dev },\r
112	{ 0 }\r
113	};\r
114	\r
115	DEVICE ptp_dev = {\r
116	"PTP", &ptp_unit, ptp_reg, ptp_mod,\r
117	1, 10, 31, 1, 8, 8,\r
118	NULL, NULL, &ptp_reset,\r
119	NULL, NULL, NULL,\r
120	&ptp_dib, 0\r
121	};\r
122	\r
123	/* Paper tape reader: IOT routine */\r
124	\r
125	int32 ptr (int32 IR, int32 AC)\r
126	{\r
127	switch (IR & 07) { /* decode IR<9:11> */\r
128	\r
129	case 0: /* RPE */\r
130	int_enable = int_enable \| (INT_PTR+INT_PTP); /* set enable */\r
131	int_req = INT_UPDATE; /* update interrupts */\r
132	return AC;\r
133	\r
134	case 1: /* RSF */\r
135	return (dev_done & INT_PTR)? IOT_SKP + AC: AC; \r
136	\r
137	case 6: /* RFC!RRB */\r
138	sim_activate (&ptr_unit, ptr_unit.wait);\r
139	case 2: /* RRB */\r
140	dev_done = dev_done & ~INT_PTR; /* clear flag */\r
141	int_req = int_req & ~INT_PTR; /* clear int req */\r
142	return (AC \| ptr_unit.buf); /* or data to AC */\r
143	\r
144	case 4: /* RFC */\r
145	sim_activate (&ptr_unit, ptr_unit.wait);\r
146	dev_done = dev_done & ~INT_PTR; /* clear flag */\r
147	int_req = int_req & ~INT_PTR; /* clear int req */\r
148	return AC;\r
149	\r
150	default:\r
151	return (stop_inst << IOT_V_REASON) + AC;\r
152	} /* end switch */\r
153	}\r
154	\r
155	/* Unit service */\r
156	\r
157	t_stat ptr_svc (UNIT *uptr)\r
158	{\r
159	int32 temp;\r
160	\r
161	if ((ptr_unit.flags & UNIT_ATT) == 0) /* attached? */\r
162	return IORETURN (ptr_stopioe, SCPE_UNATT);\r
163	if ((temp = getc (ptr_unit.fileref)) == EOF) {\r
164	if (feof (ptr_unit.fileref)) {\r
165	if (ptr_stopioe) printf ("PTR end of file\n");\r
166	else return SCPE_OK;\r
167	}\r
168	else perror ("PTR I/O error");\r
169	clearerr (ptr_unit.fileref);\r
170	return SCPE_IOERR;\r
171	}\r
172	dev_done = dev_done \| INT_PTR; /* set done */\r
173	int_req = INT_UPDATE; /* update interrupts */\r
174	ptr_unit.buf = temp & 0377;\r
175	ptr_unit.pos = ptr_unit.pos + 1;\r
176	return SCPE_OK;\r
177	}\r
178	\r
179	/* Reset routine */\r
180	\r
181	t_stat ptr_reset (DEVICE *dptr)\r
182	{\r
183	ptr_unit.buf = 0;\r
184	dev_done = dev_done & ~INT_PTR; /* clear done, int */\r
185	int_req = int_req & ~INT_PTR;\r
186	int_enable = int_enable \| INT_PTR; /* set enable */\r
187	sim_cancel (&ptr_unit); /* deactivate unit */\r
188	return SCPE_OK;\r
189	}\r
190	\r
191	/* Paper tape punch: IOT routine */\r
192	\r
193	int32 ptp (int32 IR, int32 AC)\r
194	{\r
195	switch (IR & 07) { /* decode IR<9:11> */\r
196	\r
197	case 0: /* PCE */\r
198	int_enable = int_enable & ~(INT_PTR+INT_PTP); /* clear enables */\r
199	int_req = INT_UPDATE; /* update interrupts */\r
200	return AC;\r
201	\r
202	case 1: /* PSF */\r
203	return (dev_done & INT_PTP)? IOT_SKP + AC: AC;\r
204	\r
205	case 2: /* PCF */\r
206	dev_done = dev_done & ~INT_PTP; /* clear flag */\r
207	int_req = int_req & ~INT_PTP; /* clear int req */\r
208	return AC;\r
209	\r
210	case 6: /* PLS */\r
211	dev_done = dev_done & ~INT_PTP; /* clear flag */\r
212	int_req = int_req & ~INT_PTP; /* clear int req */\r
213	case 4: /* PPC */\r
214	ptp_unit.buf = AC & 0377; /* load punch buf */\r
215	sim_activate (&ptp_unit, ptp_unit.wait); /* activate unit */\r
216	return AC;\r
217	\r
218	default:\r
219	return (stop_inst << IOT_V_REASON) + AC;\r
220	} /* end switch */\r
221	}\r
222	\r
223	/* Unit service */\r
224	\r
225	t_stat ptp_svc (UNIT *uptr)\r
226	{\r
227	dev_done = dev_done \| INT_PTP; /* set done */\r
228	int_req = INT_UPDATE; /* update interrupts */\r
229	if ((ptp_unit.flags & UNIT_ATT) == 0) /* attached? */\r
230	return IORETURN (ptp_stopioe, SCPE_UNATT);\r
231	if (putc (ptp_unit.buf, ptp_unit.fileref) == EOF) {\r
232	perror ("PTP I/O error");\r
233	clearerr (ptp_unit.fileref);\r
234	return SCPE_IOERR;\r
235	}\r
236	ptp_unit.pos = ptp_unit.pos + 1;\r
237	return SCPE_OK;\r
238	}\r
239	\r
240	/* Reset routine */\r
241	\r
242	t_stat ptp_reset (DEVICE *dptr)\r
243	{\r
244	ptp_unit.buf = 0;\r
245	dev_done = dev_done & ~INT_PTP; /* clear done, int */\r
246	int_req = int_req & ~INT_PTP;\r
247	int_enable = int_enable \| INT_PTP; /* set enable */\r
248	sim_cancel (&ptp_unit); /* deactivate unit */\r
249	return SCPE_OK;\r
250	}\r
251	\r
252	/* Bootstrap routine */\r
253	\r
254	#define BOOT_START 07756\r
255	#define BOOT_LEN (sizeof (boot_rom) / sizeof (int16))\r
256	\r
257	static const uint16 boot_rom[] = {\r
258	06014, /* 7756, RFC */\r
259	06011, /* 7757, LOOP, RSF */\r
260	05357, /* JMP .-1 */\r
261	06016, /* RFC RRB */\r
262	07106, /* CLL RTL*/\r
263	07006, /* RTL */\r
264	07510, /* SPA*/\r
265	05374, /* JMP 7774 */\r
266	07006, /* RTL */\r
267	06011, /* RSF */\r
268	05367, /* JMP .-1 */\r
269	06016, /* RFC RRB */\r
270	07420, /* SNL */\r
271	03776, /* DCA I 7776 */\r
272	03376, /* 7774, DCA 7776 */\r
273	05357, /* JMP 7757 */\r
274	00000, /* 7776, 0 */\r
275	05301 /* 7777, JMP 7701 */\r
276	};\r
277	\r
278	t_stat ptr_boot (int32 unitno, DEVICE *dptr)\r
279	{\r
280	int32 i;\r
281	extern int32 saved_PC;\r
282	extern uint16 M[];\r
283	\r
284	if (ptr_dib.dev != DEV_PTR) return STOP_NOTSTD; /* only std devno */\r
285	for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];\r
286	saved_PC = BOOT_START;\r
287	return SCPE_OK;\r
288	}\r