sw/rescue/lab8e_goettingen/disk1_im6100/rka/paroff/x80sp.pa

   1 /PRINTER & PLOTTER HANDLER ADCOM X80SP
   2 /  PLOTTER HANDLER CONVERTS [ INTO DC3 AND ] INTO DC1
   3 /       X80SP HANDLES HT,VT,CR,LF,FF
   4 /       HANDLER SUPPORTS DC3 (XOFF) - DC1 (XON)  COMMANDS FROM X80SP.
   5 /       SYSTEM TTY INPUT ETX (^C) CAUSES RETURN FROM THE HANDLER.
   6 /       ALL CONTROL CHARACTERS SEND TO THE HANDLER ARE DIRECTED TO THE X80SP.
   7 /       JOHANN J. ANDRES  UNIVERSITY GOETTINGEN
   8 /
   9 /       H.A. 10.DEC.1981  REV 0.0
  10 /       H.A. 4. APR.1982  REV 1.0 INSERTS [ --> DC3 AND ] --> DC1
  11 /       H.A. 5. OCT.1982  REV 1.1 LITTLE CHANGES SAVE 2 WORDS OF MEMORY
  12 /       H.A. 10.OCT.82    REV 1.2 REMOVES POSSIBLE LISF/LIRB TIMING PROBLEMS
  13 /       H.A. 26.OCT.82    REV 1.3 REMOVES FRTS PROBLEM: SOME CHARS WERE LOST
  14 /
  15         TTYDVC=03       / TTY
  16         INDVC=31        / LPT RS-232C INTERFACE
  17         OUTDVC=32       / LPT
  18 /
  19         LSF=10^OUTDVC+6001      / SKIP ON LPT FLAG
  20         LLS=10^OUTDVC+6006      / CLEAR FLAG & PRINT CHARACTER
  21         LISF=10^INDVC+6001      / SKIP ON LPT FLAG
  22         LIRB=10^INDVC+6006      / CLEAR FLAG & READ STATUS
  23         KSF=10^TTYDVC+6001      / SKIP ON TTY FLAG
  24         KRS=10^TTYDVC+6004      / OR TTY KBD CHARACTER INTO AC
  25 /       ACL=7701                / PAL8 DOESN'T KNOW HIS COMPUTER!
  26 /       MQL=7421
  27 /
  28 /
  29         *0              / 8 WORD HANDLER BLOCK
  30         -2              / TWO UNITS
  31         DEVICE X80S
  32         DEVICE LP1
  33         1040
  34         LPT&177         / STARTING ADR.
  35         0;0
  36         DEVICE  X80S
  37         DEVICE  PLT
  38         1040            / WRITE ONLY LINE PRINTER
  39         PLT&177         / STARTING ADR.
  40         0;0             / 2 WORDS MUST BE ZERO
  41 /
  42 /
  43         *200            / START OF HANDLER
  44 PLT,    0               / ENTRY FOR PLOTTER HANDLER
  45         DCA     SAC
  46         TAD     PLT     / HERE WE SAVE THE RETURN ADR.
  47         DCA     LPT     / INTO THE LPT RETURN POINT
  48         TAD     TPLT    / INSERT PLOTTER CALL CMD
  49         DCA     TYPE
  50         JMP     START
  51 LPT,    0
  52         DCA     SAC     / SAVE AC
  53         TAD     TLPT    / INSERT LPT CALL CMD
  54         DCA     TYPE
  55         TAD     LP23    / SWITCH OFF THE
  56         JMS     LPTPCH  /  PLOTTER MODE
  57 START,/
  58         TAD     SAC     / RESTORE AC
  59         CLL CML CLA RAR
  60         TAD I LPT       /LINK GOES ON HERE. IF NOT READ WAS REQUESTED
  61         AND LP7700
  62         CMA
  63         DCA LPTWC
  64 LPT214, RDF             / FF CONSTANT
  65         TAD LPTCIF
  66         DCA LPTXIT      /SAVE CALLING FIELD IN RETURN SEQUENCE
  67         TAD I LPT
  68         AND LPT70
  69         TAD LPCDF0
  70         DCA LPTCDF      /GET BUFFER FIELD
  71         ISZ LPT
  72         TAD I LPT
  73         DCA LPTCA       /LPTCA GETS BUFFER ADDRESS
  74         ISZ LPT
  75         TAD I LPT
  76 LPTCDF, HLT
  77         ISZ LPT
  78         SNL             /IF LINK NOT SET,GIVE ERROR
  79         JMP LPTERR
  80         SZA CLA         / INSERT FF IN FRONT OF THE FIRST DATA BLOCK TO PRINT
  81         JMP LPT177
  82         TAD LPT214      / FF --> AC
  83         JMP LPTKLG
  84
  85 \f/NOW PICK UP THE CHARACTERS, UNPACK THEM AND PRINT.
  86 /
  87 /       LOOP TO PICK UP THE CHARACTERS
  88 /
  89 LPTLP,  CLA
  90         TAD I LPTCA
  91         JMS LPTPCH
  92         TAD I LPTCA
  93         AND LP7400
  94         DCA LPTCDF
  95         ISZ LPTCA
  96 LP7400, 7400
  97         TAD I LPTCA
  98         JMS LPTPCH
  99         TAD I LPTCA
 100         AND LP7400
 101         CLL RTR
 102 LPTLF,  RTR
 103         TAD LPTCDF
 104         RTR
 105         RTR
 106         ISZ LPTCA
 107         NOP             / BUFFER MAY BE AT FIELD BOUNDARY
 108 LPTKLG, JMS LPTPCH
 109 LPT177, 177
 110         ISZ LPTWC
 111         JMP LPTLP
 112 LPRTRN, ISZ LPT
 113 LPTXIT, HLT
 114         JMP I LPT
 115 LPTWC,  0
 116 LPTCA,  0
 117 /
 118 LPTERR, CLA CLL CML RAR / FATAL ERROR RETURN
 119         JMP LPTXIT      / HOME TO MAM
 120 /
 121 /
 122 /       HERE WE PRINT THE CHARACTERS
 123 /
 124 LPTPCH, 0
 125 /
 126         AND     LPT177  / WE TRUNCATE TO SEVEN BITS CHARACTER
 127 TYPE,   0               / CHANGED AT EXECUTION TIME SEE TPLT & TLPT
 128         TAD     SAC     / RELOAD CHARACTER TO PRINT
 129         TAD     LPM135  / TEST FOR ]
 130         SZA
 131         JMP     L2      / IF ] THEN
 132         TAD     LP23    / WE PRINT A DC1
 133         JMP     L4      / CONVERSION ] INTO DC3 DONE
 134 L2,     TAD     LPT02
 135         SZA CLA
 136         JMP     L3      / TEST [
 137         TAD     LP21
 138         JMP     L4
 139 L3,     TAD     SAC     / RESTORE AC
 140 L4,/
 141         LLS             / CLEAR FLAG LOAD CHARACTER & PRINT
 142         LSF             / IF PRINTER DONE FLAG SET, THEN WE CONTINUE
 143         JMP     .-1     / ELSE WE WAIT FOR DONE FLAG
 144 LP7600, 7600            / CLA
 145         TAD LP7600      / THIS IS TO GET A NEGATIVE NUMBER
 146
 147         KRS             / OR TTY KBD INTO AC
 148         TAD LPT175      / TEST FOR ETX (^C)
 149         SNA CLA         / IF NO ETX THEN GO AND WAIT FOR LP FLAG
 150         KSF             / ETX ENTERED, TTY KBD ACTIVE THEN JMP INTO MONITOR
 151         JMP     LPISF   / TEST INPUT FROM PRINTER
 152 LPTCIF, CDF CIF 0
 153         JMP I LP7600
 154 LPISF,
 155         TAD     LPOLD   / LOAD THE LAST STATUS WORD
 156         LISF            / IS THERE ANY NEW STATUS?
 157         SKP
 158         LIRB            /  IF THERE IS A NEW STATUS THEN WE READ ELSE WE TAKE THE OLD ONE
 159         DCA     LPOLD   /  SAVE THE ACTUAL STATUS WORD
 160         TAD     LPOLD   / RESTORE STATUS --> AC
 161         AND     LPT177  / MASK OUT 7 BITS
 162         TAD     LPM23   / TEST DC3 (^S)
 163         SNA CLA
 164         JMP     LP7600  / DC3 ENTERED WAIT FOR DC1
 165         JMP I   LPTPCH  / DC1 OR MEANINGLESS INPUT, SO WE CONTINUE PRINTING
 166 /
 167 /
 168 TLPT,   JMP     L4      / LINE PRINTER HANDLER
 169 TPLT,   DCA     SAC     / SAVE AC
 170 /
 171 SAC,    0               / ON ENTRY WE SAVE THE AC
 172 /
 173 LP7700, 7700
 174 LPM06,  -06
 175 LP21,   21
 176 LP23,   23
 177 LPOLD,  1
 178 LPM23,  -23
 179 LPT02,  02
 180 LPWISZ, ISZ LPLPTR
 181         JMP I LPTPCH
 182 LPFLSH,
 183 LPT70,  70
 184 LPM135, -135
 185 LPT175, 175
 186 LPCDF0, CDF     0
 187 LPLPTR, 0
 188 /
 189 $$
 190 \1a