blob: 0ff48ad89dd145c0410ea61bbcf6ef74a92bd81c [file] [log] [blame] [raw]
/* i1620_lp.c: IBM 1443 line printer simulator
Copyright (c) 2002-2015, Robert M. Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
lpt 1443 line printer
31-Jan-15 TFM Fixed various problems ... see comments in code
10-Dec-13 RMS Fixed DN wraparound (Bob Armstrong)
Fixed test on VFU 10 (Bob Armstrong)
19-Jan-07 RMS Added UNIT_TEXT flag
21-Sep-05 RMS Revised translation tables for 7094/1401 compatibility
29-Dec-03 RMS Fixed bug in scheduling
25-Apr-03 RMS Revised for extended file support
*/
#include "i1620_defs.h"
#define LPT_BSIZE 197 /* buffer size */
#define K_IMM 0x10 /* control now */
#define K_LIN 0x20 /* spc lines */
#define K_CH10 0x40 /* chan 10 */
#define K_LCNT 0x03 /* line count */
#define K_CHAN 0x0F /* channel */
extern uint8 M[MAXMEMSIZE];
extern uint8 ind[NUM_IND];
extern UNIT cpu_unit;
extern uint32 io_stop;
uint32 cct[CCT_LNT] = { 03 }; /* car ctrl tape */
int32 cct_lnt = 66, cct_ptr = 0; /* cct len, ptr */
int32 lpt_bptr = 0; /* lpt buf ptr */
char lpt_buf[LPT_BSIZE + 1]; /* lpt buf */
int32 lpt_savctrl = 0; /* saved spc ctrl */
t_stat lpt_svc (UNIT *uptr);
t_stat lpt_reset (DEVICE *dptr);
t_stat lpt_attach (UNIT *uptr, char *cptr);
void lpt_buf_init (void);
t_stat lpt_num(uint32 pa, uint32 f1, t_bool dump); /* tfm: length parameter removed, not needed */
t_stat lpt_print (void);
t_stat lpt_space (int32 lines, int32 lflag);
#define CHP(ch,val) ((val) & (1 << (ch)))
/* LPT data structures
lpt_dev LPT device descriptor
lpt_unit LPT unit descriptor
lpt_reg LPT register list
*/
UNIT lpt_unit = {
UDATA (&lpt_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_TEXT, 50)
};
REG lpt_reg[] = {
{ BRDATA (LBUF, lpt_buf, 8, 8, LPT_BSIZE + 1) },
{ DRDATA (BPTR, lpt_bptr, 8) },
{ HRDATA (PCTL, lpt_savctrl, 8) },
{ FLDATA (PRCHK, ind[IN_PRCHK], 0) },
{ FLDATA (PRCH9, ind[IN_PRCH9], 0) },
{ FLDATA (PRCH12, ind[IN_PRCH12], 0) },
{ FLDATA (PRBSY, ind[IN_PRBSY], 0) },
{ DRDATA (POS, lpt_unit.pos, T_ADDR_W), PV_LEFT },
{ BRDATA (CCT, cct, 8, 32, CCT_LNT) },
{ DRDATA (CCTP, cct_ptr, 8), PV_LEFT },
{ DRDATA (CCTL, cct_lnt, 8), REG_RO + PV_LEFT },
{ NULL }
};
DEVICE lpt_dev = {
"LPT", &lpt_unit, lpt_reg, NULL,
1, 10, 31, 1, 8, 7,
NULL, NULL, &lpt_reset,
NULL, &lpt_attach, NULL
};
/* Data tables */
/* Numeric (flag plus digit) to lineprinter (ASCII) */
const int8 num_to_lpt[32] = {
'0', '1', '2', '3', '4', '5', '6', '7', /* tfm: All invalid char treated as errors */
'8', '9', '|', -1, '@', -1, -1, 'G', /* tfm: @, G only print on DN; else NB is blank */
'-', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'W', -1, '*', -1, -1, 'X' /* tfm: W, *, X only print on DN */
};
/* Alphameric (digit pair) to lineprinter (ASCII) */
const int8 alp_to_lpt[256] = { /* tfm: invalid codes 02, 12, 15, 32, 35, 61 removed */
' ', -1, -1, '.', ')', -1, -1, -1, /* 00 */
-1, -1, -1, -1, -1, -1, -1, -1,
'+', -1, -1, '$', '*', -1, -1, -1, /* 10 */
-1, -1, -1, -1, -1, -1, -1, -1,
'-', '/', '|', ',', '(', -1, -1, -1, /* 20 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, '=', '@', -1, -1, -1, /* 30 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, 'A', 'B', 'C', 'D', 'E', 'F', 'G', /* 40 */
'H', 'I', -1, -1, -1, -1, -1, -1,
'-', 'J', 'K', 'L', 'M', 'N', 'O', 'P', /* 50 */
'Q', 'R', -1, -1, -1, -1, -1, -1,
-1, -1, 'S', 'T', 'U', 'V', 'W', 'X', /* 60 */
'Y', 'Z', -1, -1, -1, -1, -1, -1,
'0', '1', '2', '3', '4', '5', '6', '7', /* 70 */
'8', '9', -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 80 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* 90 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* A0 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* B0 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* C0 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* D0 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* E0 */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, /* F0 */
-1, -1, -1, -1, -1, -1, -1, -1
};
/* Line printer IO routine
- Hard errors halt the system.
- Invalid characters print a blank, set the WRCHK and PRCHK
flags, and halt the system if IO stop is set.
*/
t_stat lpt (uint32 op, uint32 pa, uint32 f0, uint32 f1)
{
int8 lpc;
uint8 z, d;
t_stat r, sta;
sta = SCPE_OK;
sim_cancel (&lpt_unit); /* "stall" until */
ind[IN_PRBSY] = 0; /* printer free */
switch (op) { /* decode op */
case OP_K: /* control */
lpt_savctrl = (f0 << 4) | f1; /* form ctrl */
if (lpt_savctrl & K_IMM) /* immediate? */
return lpt_print ();
break;
case OP_DN:
return lpt_num (pa, f1, TRUE); /* dump numeric (tfm: removed len parm ) */
case OP_WN:
return lpt_num (pa, f1, FALSE); /* write numeric (tfm: removed len parm ) */
case OP_WA:
for ( ; lpt_bptr < LPT_BSIZE; lpt_bptr++) { /* only fill buf */
d = M[pa] & DIGIT; /* get digit */
z = M[pa - 1] & DIGIT; /* get zone */
if ((d & REC_MARK) == REC_MARK) /* 8-2 char? */
break;
lpc = alp_to_lpt[(z << 4) | d]; /* translate pair */
if (lpc < 0) { /* bad char? */
ind[IN_WRCHK] = ind[IN_PRCHK] = 1; /* wr chk */
if (io_stop) /* set return status */
sta = STOP_INVCHR;
}
lpt_buf[lpt_bptr] = lpc & 0x7F; /* fill buffer */
pa = ADDR_A (pa, 2); /* incr mem addr */
}
if ((f1 & 1) == 0) { ; /* print now? */
r = lpt_print (); /* print line */
if (r != SCPE_OK)
return r;
}
return sta;
default: /* invalid function */
return STOP_INVFNC;
}
return SCPE_OK;
}
/* Print numeric */
t_stat lpt_num (uint32 pa, uint32 f1, t_bool dump) /* tfm: removed len parm and reorganized code */
{
uint8 d;
int8 lpc;
t_stat r, sta;
sta = SCPE_OK;
for ( ; lpt_bptr < LPT_BSIZE; lpt_bptr++) { /* only fill buf */
d = M[pa]; /* get data char */
if (!dump && /* not dumping? */
((d & REC_MARK) == REC_MARK)) /* quit on RM or GM */
break;
lpc = num_to_lpt[d]; /* translate digit */
if (!dump && /* if not dumping */
((d & DIGIT) == NUM_BLANK)) /* translate numeric blank */
lpc = ' '; /* to normal space */
if (lpc < 0) { /* bad char? */
ind[IN_WRCHK] = ind[IN_PRCHK] = 1; /* wr chk */
if (io_stop) /* set return status */
sta = STOP_INVCHR;
}
lpt_buf[lpt_bptr] = lpc & 0x7F; /* put char into buffer (tfm: correct increment)*/
PP (pa); /* incr mem addr */
}
if ((f1 & 1) == 0) { /* print now? */
r = lpt_print (); /* print line */
if (r != SCPE_OK)
return r;
}
return sta;
}
/* Print and space */
t_stat lpt_print (void)
{
int32 i, chan, ctrl = lpt_savctrl;
if ((lpt_unit.flags & UNIT_ATT) == 0) { /* not attached? */
ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */
return SCPE_UNATT;
}
ind[IN_PRBSY] = 1; /* print busy */
sim_activate (&lpt_unit, lpt_unit.wait); /* start timer */
for (i = LPT_WIDTH; i <= LPT_BSIZE; i++) /* clear unprintable */
lpt_buf[i] = ' ';
while ((lpt_bptr > 0) && (lpt_buf[lpt_bptr - 1] == ' '))
lpt_buf[--lpt_bptr] = 0; /* trim buffer */
if (lpt_bptr) { /* any line? */
fputs (lpt_buf, lpt_unit.fileref); /* print */
lpt_unit.pos = ftell (lpt_unit.fileref); /* update pos */
lpt_buf_init (); /* reinit buf */
if (ferror (lpt_unit.fileref)) { /* error? */
ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */
sim_perror ("LPT I/O error");
clearerr (lpt_unit.fileref);
return SCPE_IOERR;
}
}
lpt_savctrl = 0x61; /* reset ctrl */
if ((ctrl & K_LIN) == ((ctrl & K_IMM)? 0: K_LIN)) /* space lines? */
return lpt_space (ctrl & K_LCNT, FALSE);
chan = lpt_savctrl & K_CHAN; /* basic chan */
if ((lpt_savctrl & K_CH10) == 0) { /* chan 10-12? */
if (chan == 0)
chan = 10;
else if (chan == 3)
chan = 11;
else if (chan == 4)
chan = 12;
else chan = 0;
}
if ((chan == 0) || (chan > 12))
return STOP_INVFNC;
for (i = 1; i < cct_lnt + 1; i++) { /* sweep thru cct */
if (CHP (chan, cct[(cct_ptr + i) % cct_lnt]))
return lpt_space (i, TRUE);
}
return STOP_CCT; /* runaway channel */
}
/* Space routine - space or skip n lines
Inputs:
count = number of lines to space or skip
sflag = skip (TRUE) or space (FALSE)
*/
t_stat lpt_space (int32 count, int32 sflag)
{
int32 i;
cct_ptr = (cct_ptr + count) % cct_lnt; /* adv cct, mod lnt */
if (sflag && CHP (0, cct[cct_ptr])) /* skip, top of form? */
fputs ("\n\f", lpt_unit.fileref); /* nl, ff */
else {
for (i = 0; i < count; i++) /* count lines */
fputc ('\n', lpt_unit.fileref);
}
lpt_unit.pos = ftell (lpt_unit.fileref); /* update position */
ind[IN_PRCH9] = CHP (9, cct[cct_ptr]) != 0; /* set indicators */
ind[IN_PRCH12] = CHP (12, cct[cct_ptr]) != 0;
if (ferror (lpt_unit.fileref)) { /* error? */
ind[IN_PRCHK] = ind[IN_WRCHK] = 1; /* wr, pri check */
sim_perror ("LPT I/O error");
clearerr (lpt_unit.fileref);
return SCPE_IOERR;
}
return SCPE_OK;
}
/* Unit service - clear printer busy */
t_stat lpt_svc (UNIT *uptr)
{
ind[IN_PRBSY] = 0;
return SCPE_OK;
}
/* Initialize lpt buffer */
void lpt_buf_init (void)
{
int32 i;
lpt_bptr = 0;
for (i = 0; i < LPT_WIDTH + 1; i++)
lpt_buf[i] = 0;
return;
}
/* Reset routine */
t_stat lpt_reset (DEVICE *dptr)
{
lpt_buf_init (); /* clear buffer */
cct_ptr = 0; /* clear cct ptr */
lpt_savctrl = 0x61; /* clear cct action */
ind[IN_PRCHK] = ind[IN_PRBSY] = 0; /* clear indicators */
ind[IN_PRCH9] = ind[IN_PRCH12] = 0;
return SCPE_OK;
}
/* Attach routine */
t_stat lpt_attach (UNIT *uptr, char *cptr)
{
lpt_reset (&lpt_dev);
return attach_unit (uptr, cptr);
}