df6475181c
1. New Features 1.1 GRI-909 - This is a new simulator for the GRI-909. - It has been hand-tested; so far, no software has been discovered. 1.2 VAX - SET CPU CONHALT will cause a HALT instruction to return to the boot ROM console rather than to SIMH. SET CPU SIMHALT restores the default behavior. - BRB/W self at IPL 1F stops the simulator. This is the default behavior of VMS at exit. 1.3 PDP-18b - ATTACH -A PTR/PTP attaches the reader and punch in ASCII mode. In ASCII mode, the reader automatically sets the high order bit of incoming alphabetic data, and the punch clears the high order bit of outgoing data. 1.4 SCP - DO -V echoes commands from the file as they are executed. - Under Windows, execution priority is set BELOW_NORMAL when the simulator is running. 2. Release Notes 2.1 Bugs Fixed - PDP-11 CPU: fixed updating of MMR0 on a memory management error. - VAX FPA: changed function names to avoid conflict with C math library. - 1401 MT: read end of record generates group mark without word mark. - 1401 DP: fixed address generation and checking. - SCP: an EXIT within a DO command will cause the simulator to exit. 3. In Progress - Interdata 16b/32b: coded, not tested. - SDS 940: coded, not tested. - IBM 1620: coded, not tested. If you would like to help with the debugging of the untested simulators, they can be made available by special request.
281 lines
8.8 KiB
C
281 lines
8.8 KiB
C
/* i1401_cd.c: IBM 1402 card reader/punch
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Copyright (c) 1993-2002, Robert M. Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Robert M Supnik shall not
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be used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Robert M Supnik.
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cdr card reader
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cdp card punch
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stack stackers (5 units)
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0 normal
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1 1
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2 2/8
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3 unused
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4 4
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Cards are represented as ASCII text streams terminated by newlines.
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This allows cards to be created and edited as normal files.
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30-May-02 RMS Widened POS to 32b
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30-Jan-02 RMS New zero footprint card bootstrap from Van Snyder
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29-Nov-01 RMS Added read only unit support
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13-Apr-01 RMS Revised for register arrays
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*/
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#include "i1401_defs.h"
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#include <ctype.h>
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extern uint8 M[];
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extern int32 ind[64], ssa, iochk;
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extern char bcd_to_ascii[64];
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extern char ascii_to_bcd[128];
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int32 s1sel, s2sel, s4sel, s8sel;
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char rbuf[CBUFSIZE]; /* > CDR_WIDTH */
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t_stat cdr_svc (UNIT *uptr);
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t_stat cdr_boot (int32 unitno);
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t_stat cdr_attach (UNIT *uptr, char *cptr);
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t_stat cd_reset (DEVICE *dptr);
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/* Card reader data structures
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cdr_dev CDR descriptor
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cdr_unit CDR unit descriptor
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cdr_reg CDR register list
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*/
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UNIT cdr_unit = {
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UDATA (&cdr_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_ROABLE, 0), 100 };
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REG cdr_reg[] = {
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{ FLDATA (LAST, ind[IN_LST], 0) },
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{ FLDATA (ERR, ind[IN_READ], 0) },
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{ FLDATA (S1, s1sel, 0) },
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{ FLDATA (S2, s2sel, 0) },
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{ DRDATA (POS, cdr_unit.pos, 32), PV_LEFT },
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{ DRDATA (TIME, cdr_unit.wait, 24), PV_LEFT },
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{ BRDATA (BUF, rbuf, 8, 8, CDR_WIDTH) },
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{ NULL } };
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DEVICE cdr_dev = {
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"CDR", &cdr_unit, cdr_reg, NULL,
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1, 10, 31, 1, 8, 7,
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NULL, NULL, &cd_reset,
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&cdr_boot, &cdr_attach, NULL };
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/* CDP data structures
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cdp_dev CDP device descriptor
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cdp_unit CDP unit descriptor
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cdp_reg CDP register list
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*/
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UNIT cdp_unit = {
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UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) };
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REG cdp_reg[] = {
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{ FLDATA (ERR, ind[IN_PNCH], 0) },
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{ FLDATA (S4, s4sel, 0) },
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{ FLDATA (S8, s8sel, 0) },
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{ DRDATA (POS, cdp_unit.pos, 32), PV_LEFT },
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{ NULL } };
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DEVICE cdp_dev = {
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"CDP", &cdp_unit, cdp_reg, NULL,
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1, 10, 31, 1, 8, 7,
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NULL, NULL, &cd_reset,
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NULL, NULL, NULL };
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/* Stacker data structures
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stack_dev STACK device descriptor
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stack_unit STACK unit descriptors
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stack_reg STACK register list
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*/
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UNIT stack_unit[] = {
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{ UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) },
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{ UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) },
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{ UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) },
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{ UDATA (NULL, UNIT_DIS, 0) }, /* unused */
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{ UDATA (NULL, UNIT_SEQ+UNIT_ATTABLE, 0) } };
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REG stack_reg[] = {
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{ DRDATA (POS0, stack_unit[0].pos, 32), PV_LEFT },
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{ DRDATA (POS1, stack_unit[1].pos, 32), PV_LEFT },
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{ DRDATA (POS28, stack_unit[2].pos, 32), PV_LEFT },
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{ DRDATA (POS4, stack_unit[4].pos, 32), PV_LEFT },
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{ NULL } };
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DEVICE stack_dev = {
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"STKR", stack_unit, stack_reg, NULL,
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5, 10, 31, 1, 8, 7,
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NULL, NULL, &cd_reset,
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NULL, NULL, NULL };
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/* Card read routine
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Modifiers have been checked by the caller
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No modifiers are recognized (column binary is not implemented)
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*/
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t_stat read_card (int32 ilnt, int32 mod)
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{
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int32 i;
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t_stat r;
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if (sim_is_active (&cdr_unit)) { /* busy? */
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sim_cancel (&cdr_unit); /* cancel */
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if (r = cdr_svc (&cdr_unit)) return r; } /* process */
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if ((cdr_unit.flags & UNIT_ATT) == 0) return SCPE_UNATT; /* attached? */
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ind[IN_READ] = ind[IN_LST] = s1sel = s2sel = 0; /* default stacker */
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for (i = 0; i < CBUFSIZE; i++) rbuf[i] = 0; /* clear buffer */
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fgets (rbuf, CBUFSIZE, cdr_unit.fileref); /* read card */
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if (feof (cdr_unit.fileref)) return STOP_NOCD; /* eof? */
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if (ferror (cdr_unit.fileref)) { /* error? */
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perror ("Card reader I/O error");
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clearerr (cdr_unit.fileref);
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if (iochk) return SCPE_IOERR;
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ind[IN_READ] = 1;
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return SCPE_OK; }
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cdr_unit.pos = ftell (cdr_unit.fileref); /* update position */
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if (ssa) { /* if last cd on */
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i = getc (cdr_unit.fileref); /* see if more */
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if (feof (cdr_unit.fileref)) ind[IN_LST] = 1; /* eof? set flag */
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fseek (cdr_unit.fileref, cdr_unit.pos, SEEK_SET); }
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for (i = 0; i < CDR_WIDTH; i++) { /* cvt to BCD */
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rbuf[i] = ascii_to_bcd[rbuf[i]];
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M[CDR_BUF + i] = (M[CDR_BUF + i] & WM) | rbuf[i]; }
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M[CDR_BUF - 1] = 060; /* mem mark */
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sim_activate (&cdr_unit, cdr_unit.wait); /* activate */
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return SCPE_OK;
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}
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/* Card reader service. If a stacker select is active, copy to the
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selected stacker. Otherwise, copy to the normal stacker. If the
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unit is unattached, simply exit.
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*/
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t_stat cdr_svc (UNIT *uptr)
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{
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int32 i;
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if (s1sel) uptr = &stack_unit[1]; /* stacker 1? */
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else if (s2sel) uptr = &stack_unit[2]; /* stacker 2? */
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else uptr = &stack_unit[0]; /* then default */
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if ((uptr -> flags & UNIT_ATT) == 0) return SCPE_OK; /* attached? */
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for (i = 0; i < CDR_WIDTH; i++) rbuf[i] = bcd_to_ascii[rbuf[i]];
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for (i = CDR_WIDTH - 1; (i >= 0) && (rbuf[i] == ' '); i--) rbuf[i] = 0;
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rbuf[CDR_WIDTH] = 0; /* null at end */
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fputs (rbuf, uptr -> fileref); /* write card */
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fputc ('\n', uptr -> fileref); /* plus new line */
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if (ferror (uptr -> fileref)) { /* error? */
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perror ("Card stacker I/O error");
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clearerr (uptr -> fileref);
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if (iochk) return SCPE_IOERR; }
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uptr -> pos = ftell (uptr -> fileref); /* update position */
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return SCPE_OK;
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}
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/* Card punch routine
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Modifiers have been checked by the caller
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No modifiers are recognized (column binary is not implemented)
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*/
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t_stat punch_card (int32 ilnt, int32 mod)
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{
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int32 i;
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static char pbuf[CDP_WIDTH + 1]; /* + null */
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UNIT *uptr;
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if (s8sel) uptr = &stack_unit[2]; /* stack 8? */
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else if (s4sel) uptr = &stack_unit[4]; /* stack 4? */
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else uptr = &cdp_unit; /* normal output */
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if ((uptr -> flags & UNIT_ATT) == 0) return SCPE_UNATT; /* attached? */
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ind[IN_PNCH] = s4sel = s8sel = 0; /* clear flags */
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M[CDP_BUF - 1] = 012; /* set prev loc */
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for (i = 0; i < CDP_WIDTH; i++) pbuf[i] = bcd_to_ascii[M[CDP_BUF + i] & CHAR];
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for (i = CDP_WIDTH - 1; (i >= 0) && (pbuf[i] == ' '); i--) pbuf[i] = 0;
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pbuf[CDP_WIDTH] = 0; /* trailing null */
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fputs (pbuf, uptr -> fileref); /* output card */
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fputc ('\n', uptr -> fileref); /* plus new line */
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if (ferror (uptr -> fileref)) { /* error? */
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perror ("Card punch I/O error");
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clearerr (uptr -> fileref);
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if (iochk) return SCPE_IOERR;
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ind[IN_PNCH] = 1; }
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uptr -> pos = ftell (uptr -> fileref); /* update position */
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return SCPE_OK;
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}
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/* Select stack routine
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Modifiers have been checked by the caller
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Modifiers are 1, 2, 4, 8 for the respective stack
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*/
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t_stat select_stack (int32 ilnt, int32 mod)
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{
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if (mod == 1) s1sel = 1;
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else if (mod == 2) s2sel = 1;
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else if (mod == 4) s4sel = 1;
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else if (mod == 8) s8sel = 1;
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return SCPE_OK;
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}
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/* Card reader/punch reset */
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t_stat cd_reset (DEVICE *dptr)
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{
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ind[IN_LST] = ind[IN_READ] = ind[IN_PNCH] = 0; /* clear indicators */
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s1sel = s2sel = s4sel = s8sel = 0; /* clear stacker sel */
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sim_cancel (&cdr_unit); /* clear reader event */
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return SCPE_OK;
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}
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/* Card reader attach */
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t_stat cdr_attach (UNIT *uptr, char *cptr)
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{
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ind[IN_LST] = ind[IN_READ] = 0; /* clear last card */
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return attach_unit (uptr, cptr);
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}
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/* Bootstrap routine */
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#define BOOT_START 0
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#define BOOT_LEN (sizeof (boot_rom) / sizeof (unsigned char))
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static const unsigned char boot_rom[] = {
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OP_R + WM, OP_NOP + WM }; /* R, NOP */
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t_stat cdr_boot (int32 unitno)
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{
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int32 i;
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extern int32 saved_IS;
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for (i = 0; i < CDR_WIDTH; i++) M[CDR_BUF + i] = 0; /* clear buffer */
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for (i = 0; i < BOOT_LEN; i++) M[BOOT_START + i] = boot_rom[i];
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saved_IS = BOOT_START;
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return SCPE_OK;
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}
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