5531ccb175
These changes facilitate more robust parameter type checking and helps to identify unexpected coding errors. Most simulators can now also be compiled with a C++ compiler without warnings. Additionally, these changes have also been configured to facilitate easier backporting of simulator and device simulation modules to run under the simh v3.9+ SCP framework.
612 lines
26 KiB
C
612 lines
26 KiB
C
/* hp2100_lps.c: HP 2100 12653A/2767 line printer simulator
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Copyright (c) 1993-2016, 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 be
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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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LPS 12653A 2767 line printer
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12566B microcircuit interface with loopback diagnostic connector
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13-May-16 JDB Modified for revised SCP API function parameter types
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10-Feb-12 JDB Deprecated DEVNO in favor of SC
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28-Mar-11 JDB Tidied up signal handling
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26-Oct-10 JDB Changed I/O signal handler for revised signal model
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Revised detection of CLC at last DMA cycle
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19-Oct-10 JDB Corrected 12566B (DIAG mode) jumper settings
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26-Jun-08 JDB Rewrote device I/O to model backplane signals
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10-May-07 RMS Added UNIT_TEXT flag
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11-Jan-07 JDB CLC cancels I/O event if DIAG (jumper W9 in "A" pos)
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Added ioCRS state to I/O decoders
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19-Nov-04 JDB Added restart when set online, etc.
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Fixed col count for non-printing chars
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01-Oct-04 JDB Added SET OFFLINE/ONLINE, POWEROFF/POWERON
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Fixed status returns for error conditions
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Fixed handling of non-printing characters
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Fixed handling of characters after column 80
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Improved timing model accuracy for RTE
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Added fast/realistic timing
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Added debug printouts
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03-Jun-04 RMS Fixed timing (found by Dave Bryan)
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26-Apr-04 RMS Fixed SFS x,C and SFC x,C
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Implemented DMA SRQ (follows FLG)
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25-Apr-03 RMS Revised for extended file support
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24-Oct-02 RMS Added microcircuit test features
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30-May-02 RMS Widened POS to 32b
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03-Dec-01 RMS Changed DEVNO to use extended SET/SHOW
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07-Sep-01 RMS Moved function prototypes
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21-Nov-00 RMS Fixed flag, fbf power up state
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Added command flop
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15-Oct-00 RMS Added variable device number support
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References:
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- 2767A Line Printer Operating and Service Manual (02767-90002, Oct-1973)
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- 12566B, 12566B-001, 12566B-002, 12566B-003 Microcircuit Interface Kits
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Operating and Service Manual (12566-90015, Apr-1976)
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This module simulates two different devices. In "diagnostic mode," it
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simulates a 12566B microcircuit interface card with a loopback connector. In
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non-diagnostic mode, it simulates a 12653A line printer interface card and a
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2767 line printer.
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In diagnostic mode, the 12566B interface has a loopback connector that ties
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the output data lines to the input data lines and the device command output
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to the device flag input. In addition, card configuration jumpers are set as
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needed for the diagnostic programs.
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Jumper settings depend on the CPU model. For the 2114/15/16 CPUs, jumper W1
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is installed in position B and jumper W2 in position C. In these positions,
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the card flag sets two instructions after the STC, allowing DMA to steal
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every third cycle. For the 2100 and 1000 CPUs, jumper W1 is installed in
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position C and jumper W2 in position B. In these positions, the card flag
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sets one instruction after the STC, allowing DMA to steal every other cycle.
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For all CPUs, jumpers W3 and W4 are installed in position B, W5-W8 are
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installed, and W9 is installed in position A.
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The 2767 impact printer has a rotating drum with 80 columns of 64 raised
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characters. ASCII codes 32 through 95 (SPACE through "_") form the print
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repertoire. The printer responds to the control characters FF, LF, and CR.
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The 80 columns are divided into four zones of 20 characters each that are
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addressed sequentially. Received characters are buffered in a 20-character
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memory. When the 20th printable character is received, the current zone is
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printed, and the memory is reset. In the absence of print command
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characters, a zone print operation will commence after each group of 20
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printable characters is transmitted to the printer.
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The print command characters have these actions:
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* CR -- print the characters in the current zone, reset to zone 1, and clear
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the buffer memory.
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* LF -- same as CR, plus advances the paper one line.
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* FF -- same as CR, plus advances the paper to the top of the next form.
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The 2767 provides two status bits via the interface:
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bit 15 -- printer not ready
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bit 0 -- printer busy
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The expected status returns are:
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100001 -- power off or cable disconnected
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100001 -- initial power on, then changes to 000001 within sixty
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seconds of initial power on
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000001 -- power on, paper unloaded or printer offline or not idle
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000000 -- power on, paper loaded and printer online and idle
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These simulator commands provide the listed printer states:
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SET LPS POWEROFF --> power off or cable disconnected
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SET LPS POWERON --> power on
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SET LPS OFFLINE --> printer offline
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SET LPS ONLINE --> printer online
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ATT LPS <file> --> paper loaded
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DET LPS --> paper out
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The following implemented behaviors have been inferred from secondary sources
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(diagnostics, operating system drivers, etc.), due to absent or contradictory
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authoritative information; future correction may be needed:
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1. Paper out sets BUSY instead of NOT READY.
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2. Print operation in progress sets BUSY instead of NOT READY.
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3. Characters not in the print repertoire are replaced with blanks.
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4. The 81st and succeeding characters overprint the current line.
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*/
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#include "hp2100_defs.h"
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#include "hp2100_cpu.h"
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#define LPS_ZONECNT 20 /* zone char count */
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#define LPS_PAGECNT 80 /* page char count */
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#define LPS_PAGELNT 60 /* page line length */
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#define LPS_FORMLNT 66 /* form line length */
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/* Printer power states */
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#define LPS_ON 0 /* power is on */
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#define LPS_OFF 1 /* power is off */
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#define LPS_TURNING_ON 2 /* power is turning on */
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#define LPS_BUSY 0000001 /* busy status */
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#define LPS_NRDY 0100000 /* not ready status */
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#define LPS_PWROFF LPS_BUSY | LPS_NRDY /* power-off status */
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#define UNIT_V_DIAG (UNIT_V_UF + 0) /* diagnostic mode */
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#define UNIT_V_POWEROFF (UNIT_V_UF + 1) /* unit powered off */
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#define UNIT_V_OFFLINE (UNIT_V_UF + 2) /* unit offline */
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#define UNIT_DIAG (1 << UNIT_V_DIAG)
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#define UNIT_POWEROFF (1 << UNIT_V_POWEROFF)
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#define UNIT_OFFLINE (1 << UNIT_V_OFFLINE)
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struct {
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FLIP_FLOP control; /* control flip-flop */
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FLIP_FLOP flag; /* flag flip-flop */
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FLIP_FLOP flagbuf; /* flag buffer flip-flop */
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} lps = { CLEAR, CLEAR, CLEAR };
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int32 lps_ccnt = 0; /* character count */
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int32 lps_lcnt = 0; /* line count */
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int32 lps_stopioe = 0; /* stop on error */
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int32 lps_sta = 0; /* printer status */
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int32 lps_timing = 1; /* timing type */
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uint32 lps_power = LPS_ON; /* power state */
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/* Hardware timing:
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(based on 1580 instr/msec) instr msec calc msec
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------------------------
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- character transfer time : ctime = 2 2 us
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- per-zone printing time : ptime = 55300 35 40
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- per-line paper slew time : stime = 17380 11 13
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- power-on ready delay time : rtime = 158000 100
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NOTE: the printer acknowledges before the print motion has stopped to allow
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for continuous slew, so the set times are a bit less than the calculated
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operation time from the manual.
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NOTE: the 2767 diagnostic checks completion times, so the realistic timing
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must be used. Because simulator timing is in instructions, and because the
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diagnostic uses the TIMER instruction (~1580 executions per millisecond) when
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running on a 1000-E/F but a software timing loop (~400-600 executions per
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millisecond) when running on anything else, realistic timings are decreased by
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three-fourths when not executing on an E/F.
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*/
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int32 lps_ctime = 0; /* char xfer time */
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int32 lps_ptime = 0; /* zone printing time */
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int32 lps_stime = 0; /* paper slew time */
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int32 lps_rtime = 0; /* power-on ready time */
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typedef int32 TIMESET[4]; /* set of controller times */
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int32 *const lps_timers[] = { &lps_ctime, &lps_ptime, &lps_stime, &lps_rtime };
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const TIMESET lps_times[2] = {
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{ 2, 55300, 17380, 158000 }, /* REALTIME */
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{ 2, 1000, 1000, 1000 } /* FASTTIME */
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};
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DEVICE lps_dev;
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IOHANDLER lpsio;
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t_stat lps_svc (UNIT *uptr);
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t_stat lps_reset (DEVICE *dptr);
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t_stat lps_restart (UNIT *uptr, int32 value, CONST char *cptr, void *desc);
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t_stat lps_poweroff (UNIT *uptr, int32 value, CONST char *cptr, void *desc);
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t_stat lps_poweron (UNIT *uptr, int32 value, CONST char *cptr, void *desc);
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t_stat lps_attach (UNIT *uptr, CONST char *cptr);
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t_stat lps_set_timing (UNIT *uptr, int32 val, CONST char *cptr, void *desc);
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t_stat lps_show_timing (FILE *st, UNIT *uptr, int32 val, CONST void *desc);
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/* LPS data structures
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lps_dev LPS device descriptor
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lps_unit LPS unit descriptor
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lps_reg LPS register list
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*/
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DIB lps_dib = { &lpsio, LPS };
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UNIT lps_unit = {
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UDATA (&lps_svc, UNIT_SEQ+UNIT_ATTABLE+UNIT_DISABLE+UNIT_TEXT, 0)
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};
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REG lps_reg[] = {
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{ ORDATA (BUF, lps_unit.buf, 16) },
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{ ORDATA (STA, lps_sta, 16) },
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{ ORDATA (POWER, lps_power, 2), REG_RO },
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{ FLDATA (CTL, lps.control, 0) },
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{ FLDATA (FLG, lps.flag, 0) },
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{ FLDATA (FBF, lps.flagbuf, 0) },
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{ DRDATA (CCNT, lps_ccnt, 7), PV_LEFT },
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{ DRDATA (LCNT, lps_lcnt, 7), PV_LEFT },
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{ DRDATA (POS, lps_unit.pos, T_ADDR_W), PV_LEFT },
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{ DRDATA (CTIME, lps_ctime, 24), PV_LEFT },
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{ DRDATA (PTIME, lps_ptime, 24), PV_LEFT },
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{ DRDATA (STIME, lps_stime, 24), PV_LEFT },
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{ DRDATA (RTIME, lps_rtime, 24), PV_LEFT },
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{ FLDATA (TIMING, lps_timing, 0), REG_HRO },
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{ FLDATA (STOP_IOE, lps_stopioe, 0) },
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{ ORDATA (SC, lps_dib.select_code, 6), REG_HRO },
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{ ORDATA (DEVNO, lps_dib.select_code, 6), REG_HRO },
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{ NULL }
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};
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MTAB lps_mod[] = {
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{ UNIT_DIAG, UNIT_DIAG, "diagnostic mode", "DIAG", NULL },
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{ UNIT_DIAG, 0, "printer mode", "PRINTER", NULL },
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{ UNIT_POWEROFF, UNIT_POWEROFF, "power off", "POWEROFF", lps_poweroff },
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{ UNIT_POWEROFF, 0, "power on", "POWERON", lps_poweron },
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{ UNIT_OFFLINE, UNIT_OFFLINE, "offline", "OFFLINE", NULL },
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{ UNIT_OFFLINE, 0, "online", "ONLINE", lps_restart },
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{ MTAB_XTD | MTAB_VDV, 0, NULL, "REALTIME",
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&lps_set_timing, NULL, NULL },
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{ MTAB_XTD | MTAB_VDV, 1, NULL, "FASTTIME",
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&lps_set_timing, NULL, NULL },
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{ MTAB_XTD | MTAB_VDV, 0, "TIMING", NULL,
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NULL, &lps_show_timing, NULL },
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{ MTAB_XTD | MTAB_VDV, 0, "SC", "SC", &hp_setsc, &hp_showsc, &lps_dev },
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{ MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "DEVNO", "DEVNO", &hp_setdev, &hp_showdev, &lps_dev },
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{ 0 }
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};
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DEVICE lps_dev = {
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"LPS", &lps_unit, lps_reg, lps_mod,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &lps_reset,
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NULL, &lps_attach, NULL,
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&lps_dib, DEV_DISABLE | DEV_DIS | DEV_DEBUG
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};
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/* I/O signal handler.
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Implementation note:
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1. The 211x DMA diagnostic expects that a programmed STC and CLC sequence
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will set the card flag in two instructions, whereas a last-DMA-cycle
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assertion of STC and CLC simultaneously will not.
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*/
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uint32 lpsio (DIB *dibptr, IOCYCLE signal_set, uint32 stat_data)
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{
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int32 sched;
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IOSIGNAL signal;
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IOCYCLE working_set = IOADDSIR (signal_set); /* add ioSIR if needed */
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while (working_set) {
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signal = IONEXT (working_set); /* isolate next signal */
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switch (signal) { /* dispatch I/O signal */
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case ioCLF: /* clear flag flip-flop */
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lps.flag = lps.flagbuf = CLEAR;
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break;
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case ioSTF: /* set flag flip-flop */
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case ioENF: /* enable flag */
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lps.flag = lps.flagbuf = SET;
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break;
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case ioSFC: /* skip if flag is clear */
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setstdSKF (lps);
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break;
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case ioSFS: /* skip if flag is set */
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setstdSKF (lps);
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break;
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case ioIOI: /* I/O data input */
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if ((lps_unit.flags & UNIT_DIAG) == 0) { /* real lpt? */
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if (lps_power == LPS_ON) { /* power on? */
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if (((lps_unit.flags & UNIT_ATT) == 0) || /* paper out? */
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(lps_unit.flags & UNIT_OFFLINE) || /* offline? */
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sim_is_active (&lps_unit)) lps_sta = LPS_BUSY;
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else
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lps_sta = 0;
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}
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else
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lps_sta = LPS_PWROFF;
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}
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stat_data = IORETURN (SCPE_OK, lps_sta); /* diag, rtn status */
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if (DEBUG_PRS (lps_dev))
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fprintf (sim_deb, ">>LPS LIx: Status %06o returned\n", lps_sta);
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break;
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case ioIOO: /* I/O data output */
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lps_unit.buf = IODATA (stat_data);
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if (DEBUG_PRS (lps_dev))
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fprintf (sim_deb, ">>LPS OTx: Character %06o output\n", lps_unit.buf);
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break;
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case ioPOPIO: /* power-on preset to I/O */
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lps.flag = lps.flagbuf = SET; /* set flag and flag buffer */
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lps_unit.buf = 0; /* clear output buffer */
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break;
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case ioCRS: /* control reset */
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lps.control = CLEAR; /* clear control */
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sim_cancel (&lps_unit); /* deactivate unit */
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break;
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case ioCLC: /* clear control flip-flop */
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lps.control = CLEAR;
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break;
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case ioSTC: /* set control flip-flop */
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lps.control = SET; /* set control */
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if (lps_unit.flags & UNIT_DIAG) { /* diagnostic? */
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lps_sta = lps_unit.buf; /* loop back data */
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if (!(signal_set & ioCLC)) /* CLC not asserted simultaneously? */
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if (UNIT_CPU_TYPE == UNIT_TYPE_211X) /* 2114/15/16 CPU? */
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sim_activate (&lps_unit, 3); /* schedule flag after two instructions */
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else /* 2100 or 1000 */
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sim_activate (&lps_unit, 2); /* schedule flag after next instruction */
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}
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else { /* real lpt, sched */
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if (DEBUG_PRS (lps_dev)) fprintf (sim_deb,
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">>LPS STC: Character %06o scheduled for line %d, column %d, ",
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lps_unit.buf, lps_lcnt + 1, lps_ccnt + 1);
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if ((lps_unit.buf != '\f') &&
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(lps_unit.buf != '\n') &&
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(lps_unit.buf != '\r')) { /* normal char */
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lps_ccnt = lps_ccnt + 1; /* incr char counter */
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if (lps_ccnt % LPS_ZONECNT == 0) /* end of zone? */
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sched = lps_ptime; /* print zone */
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else
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sched = lps_ctime; /* xfer char */
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}
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else { /* print cmd */
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if (lps_ccnt % LPS_ZONECNT == 0) /* last zone printed? */
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sched = lps_ctime; /* yes, so just char time */
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else
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sched = lps_ptime; /* no, so print needed */
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lps_ccnt = 0; /* reset char counter */
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if (lps_unit.buf == '\n') { /* line advance */
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lps_lcnt = (lps_lcnt + 1) % LPS_PAGELNT;
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if (lps_lcnt > 0)
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sched = sched + lps_stime;
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else
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sched = sched + /* allow for perf skip */
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lps_stime * (LPS_FORMLNT - LPS_PAGELNT);
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}
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else if (lps_unit.buf == '\f') { /* form advance */
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sched = sched + lps_stime * (LPS_FORMLNT - lps_lcnt);
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lps_lcnt = 0;
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}
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}
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sim_activate (&lps_unit, sched);
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if (DEBUG_PRS (lps_dev))
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fprintf (sim_deb, "time = %d\n", sched);
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}
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break;
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case ioSIR: /* set interrupt request */
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setstdPRL (lps); /* set standard PRL signal */
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setstdIRQ (lps); /* set standard IRQ signal */
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setstdSRQ (lps); /* set standard SRQ signal */
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break;
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case ioIAK: /* interrupt acknowledge */
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lps.flagbuf = CLEAR;
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break;
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default: /* all other signals */
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break; /* are ignored */
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}
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working_set = working_set & ~signal; /* remove current signal from set */
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}
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return stat_data;
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}
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/* Unit service */
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t_stat lps_svc (UNIT *uptr)
|
|
{
|
|
int32 c = uptr->buf & 0177;
|
|
|
|
if (lps_power == LPS_TURNING_ON) { /* printer warmed up? */
|
|
lps_power = LPS_ON; /* change state */
|
|
lps_restart (uptr, 0, NULL, NULL); /* restart I/O if hung */
|
|
if (DEBUG_PRS (lps_dev))
|
|
fputs (">>LPS svc: Power state is ON\n", sim_deb);
|
|
return SCPE_OK; /* done */
|
|
}
|
|
if (uptr->flags & UNIT_DIAG) { /* diagnostic? */
|
|
lpsio (&lps_dib, ioENF, 0); /* set flag */
|
|
return SCPE_OK; /* done */
|
|
}
|
|
if ((uptr->flags & UNIT_ATT) == 0) /* attached? */
|
|
return IOERROR (lps_stopioe, SCPE_UNATT);
|
|
else if (uptr->flags & UNIT_OFFLINE) /* offline? */
|
|
return IOERROR (lps_stopioe, STOP_OFFLINE);
|
|
else if (uptr->flags & UNIT_POWEROFF) /* powered off? */
|
|
return IOERROR (lps_stopioe, STOP_PWROFF);
|
|
|
|
lpsio (&lps_dib, ioENF, 0); /* set flag */
|
|
|
|
if (((c < ' ') || (c > '_')) && /* non-printing char? */
|
|
(c != '\f') && (c != '\n') && (c != '\r')) {
|
|
if (DEBUG_PRS (lps_dev))
|
|
fprintf (sim_deb, ">>LPS svc: Character %06o erased\n", c);
|
|
c = ' '; /* replace with blank */
|
|
}
|
|
if (lps_ccnt > LPS_PAGECNT) { /* 81st character? */
|
|
fputc ('\r', uptr->fileref); /* return to line start */
|
|
uptr->pos = uptr->pos + 1; /* update pos */
|
|
lps_ccnt = 1; /* reset char counter */
|
|
if (DEBUG_PRS (lps_dev))
|
|
fputs (">>LPS svc: Line wraparound to column 1\n", sim_deb);
|
|
}
|
|
fputc (c, uptr->fileref); /* "print" char */
|
|
uptr->pos = uptr->pos + 1; /* update pos */
|
|
if (DEBUG_PRS (lps_dev))
|
|
fprintf (sim_deb, ">>LPS svc: Character %06o printed\n", c);
|
|
if ((lps_lcnt == 0) && (c == '\n')) { /* LF did TOF? */
|
|
fputc ('\f', uptr->fileref); /* do perf skip */
|
|
uptr->pos = uptr->pos + 1; /* update pos */
|
|
if (DEBUG_PRS (lps_dev))
|
|
fputs (">>LPS svc: Perforation skip to TOF\n", sim_deb);
|
|
}
|
|
if (ferror (uptr->fileref)) {
|
|
perror ("LPS I/O error");
|
|
clearerr (uptr->fileref);
|
|
return SCPE_IOERR;
|
|
}
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Reset routine */
|
|
|
|
t_stat lps_reset (DEVICE *dptr)
|
|
{
|
|
if (sim_switches & SWMASK ('P')) { /* power-on reset? */
|
|
lps_power = LPS_ON; /* power is on */
|
|
lps_set_timing (NULL, lps_timing, NULL, NULL); /* init timing set */
|
|
}
|
|
|
|
IOPRESET (&lps_dib); /* PRESET device (does not use PON) */
|
|
|
|
lps_sta = 0; /* clear status */
|
|
sim_cancel (&lps_unit); /* deactivate unit */
|
|
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Restart I/O routine
|
|
|
|
If I/O is started via STC, and the printer is powered off, offline,
|
|
or out of paper, the CTL and CMD flip-flops will set, a service event
|
|
will be scheduled, and the service routine will be entered. If
|
|
STOP_IOE is not set, the I/O operation will "hang" at that point
|
|
until the printer is powered on, set online, or paper is supplied
|
|
(attached).
|
|
|
|
If a pending operation is "hung" when this routine is called, it is
|
|
restarted, which clears CTL and sets FBF and FLG, completing the
|
|
original I/O request.
|
|
*/
|
|
|
|
t_stat lps_restart (UNIT *uptr, int32 value, CONST char *cptr, void *desc)
|
|
{
|
|
if (lps.control && !sim_is_active (uptr))
|
|
sim_activate (uptr, 0); /* reschedule I/O */
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Printer power off */
|
|
|
|
t_stat lps_poweroff (UNIT *uptr, int32 value, CONST char *cptr, void *desc)
|
|
{
|
|
lps_power = LPS_OFF; /* change state */
|
|
if (DEBUG_PRS (lps_dev)) fputs (">>LPS set: Power state is OFF\n", sim_deb);
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Printer power on */
|
|
|
|
t_stat lps_poweron (UNIT *uptr, int32 value, CONST char *cptr, void *desc)
|
|
{
|
|
if (lps_unit.flags & UNIT_DIAG) { /* diag mode? */
|
|
lps_power = LPS_ON; /* no delay */
|
|
if (DEBUG_PRS (lps_dev))
|
|
fputs (">>LPS set: Power state is ON\n", sim_deb);
|
|
}
|
|
else {
|
|
lps_power = LPS_TURNING_ON; /* change state */
|
|
lps_unit.flags |= UNIT_OFFLINE; /* set offline */
|
|
sim_activate (&lps_unit, lps_rtime); /* schedule ready */
|
|
if (DEBUG_PRS (lps_dev)) fprintf (sim_deb,
|
|
">>LPS set: Power state is TURNING ON, scheduled time = %d\n",
|
|
lps_rtime );
|
|
}
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Attach routine */
|
|
|
|
t_stat lps_attach (UNIT *uptr, CONST char *cptr)
|
|
{
|
|
lps_ccnt = lps_lcnt = 0; /* top of form */
|
|
lps_restart (uptr, 0, NULL, NULL); /* restart I/O if hung */
|
|
return attach_unit (uptr, cptr);
|
|
}
|
|
|
|
/* Set printer timing
|
|
|
|
Realistic timing is factored, depending on CPU model, to account for the
|
|
timing method employed by the diagnostic. */
|
|
|
|
t_stat lps_set_timing (UNIT *uptr, int32 val, CONST char *cptr, void *desc)
|
|
{
|
|
uint32 i, factor = 1;
|
|
|
|
lps_timing = (val != 0); /* determine choice */
|
|
if ((lps_timing == 0) && /* calc speed factor */
|
|
(UNIT_CPU_MODEL != UNIT_1000_E) &&
|
|
(UNIT_CPU_MODEL != UNIT_1000_F))
|
|
factor = 4;
|
|
for (i = 0; i < (sizeof (lps_timers) / sizeof (lps_timers[0])); i++)
|
|
*lps_timers[i] = lps_times[lps_timing][i] / factor; /* assign times */
|
|
return SCPE_OK;
|
|
}
|
|
|
|
/* Show printer timing */
|
|
|
|
t_stat lps_show_timing (FILE *st, UNIT *uptr, int32 val, CONST void *desc)
|
|
{
|
|
if (lps_timing) fputs ("fast timing", st);
|
|
else fputs ("realistic timing", st);
|
|
return SCPE_OK;
|
|
}
|