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rcornwell.sims/SEL32/sel32_con.c
AZBevier 84c38215da SEL32: Add workaround delay in channel processing for UTX logic errors. 
SEL32: Create mkdiagtape utility to generate SEL diagnostic tapes.
SEL32: Update DP disk and Ethernet software for diag detected errors.
SEL32: Update mkvmtape utility to correctly build MPX3X save tapes.
SEL32: Modify taptools makefile for new mkdiagtape utility.
SEL32: Update README.md file for taptools.
2020-08-27 15:34:10 -07:00

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/* sel32_con.c: SEL 32 Class F IOP processor console.
Copyright (c) 2018-2020, James C. Bevier
Portions provided by Richard Cornwell, Geert Rolf and other SIMH contributers
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
JAMES C. BEVIER 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.
This is the standard console interface. It is subchannel of the IOP 7e00.
These units each buffer one record in local memory and signal
ready when the buffer is full or empty. The channel must be
ready to recieve/transmit data when they are activated since
they will transfer their block during chan_cmd. All data is
transmitted as ASCII characters.
*/
#include "sel32_defs.h"
#include "sim_tmxr.h"
#if NUM_DEVS_CON > 0
#define UNIT_CON UNIT_IDLE | UNIT_DISABLE
#define CMD u3
/* Held in u3 is the device command and status */
#define CON_INCH 0x00 /* Initialize channel command */
#define CON_INCH2 0xf0 /* Initialize channel command for processing */
#define CON_WR 0x01 /* Write console */
#define CON_RD 0x02 /* Read console */
#define CON_NOP 0x03 /* No op command */
#define CON_SNS 0x04 /* Sense command */
#define CON_ECHO 0x0a /* Read with Echo */
#define CON_CON 0x1f /* connect line */
#define CON_DIS 0x23 /* disconnect line */
#define CON_RWD 0x37 /* TOF and write line */
#define CON_MSK 0xff /* Command mask */
/* Status held in u3 */
/* controller/unit address in upper 16 bits */
#define CON_INPUT 0x100 /* Input ready for unit */
#define CON_CR 0x200 /* Output at beginning of line */
#define CON_REQ 0x400 /* Request key pressed */
#define CON_EKO 0x800 /* Echo input character */
#define CON_OUTPUT 0x1000 /* Output ready for unit */
#define CON_READ 0x2000 /* Read mode selected */
#define CON_ATAT 0x4000 /* working on @@A input */
/* Input buffer pointer held in u4 */
#define SNS u5
/* in u5 packs sense byte 0,1 and 3 */
/* Sense byte 0 */
#define SNS_CMDREJ 0x80000000 /* Command reject */
#define SNS_INTVENT 0x40000000 /* Unit intervention required */
/* sense byte 3 */
#define SNS_RDY 0x80 /* device ready */
#define SNS_ONLN 0x40 /* device online */
#define SNS_DSR 0x08 /* data set ready */
#define SNS_DCD 0x04 /* data carrier detect */
/* std devices. data structures
con_dev Console device descriptor
con_unit Console unit descriptor
con_reg Console register list
con_mod Console modifiers list
*/
struct _con_data
{
uint8 incnt; /* char count */
uint8 ibuff[145]; /* Input line buffer */
}
con_data[NUM_UNITS_CON];
uint32 atbuf=0; /* attention buffer */
uint32 outbusy = 0; /* output waiting on timeout */
uint32 inbusy = 0; /* input waiting on timeout */
/* forward definitions */
uint16 con_preio(UNIT *uptr, uint16 chan);
uint16 con_startcmd(UNIT*, uint16, uint8);
void con_ini(UNIT*, t_bool);
t_stat con_srvi(UNIT*);
t_stat con_srvo(UNIT*);
uint16 con_haltio(UNIT *);
t_stat con_poll(UNIT *);
t_stat con_reset(DEVICE *);
/* channel program information */
CHANP con_chp[NUM_UNITS_CON] = {0};
MTAB con_mod[] = {
{MTAB_XTD | MTAB_VUN | MTAB_VALR, 0, "DEV", "DEV", &set_dev_addr, &show_dev_addr, NULL},
{0}
};
UNIT con_unit[] = {
{UDATA(&con_srvi, UNIT_CON, 0), 0, UNIT_ADDR(0x7EFC)}, /* Input */
{UDATA(&con_srvo, UNIT_CON, 0), 0, UNIT_ADDR(0x7EFD)}, /* Output */
};
//DIB con_dib = {NULL, con_startcmd, NULL, NULL, NULL, con_ini, con_unit, con_chp, NUM_UNITS_CON, 0xf, 0x7e00, 0, 0, 0};
DIB con_dib = {
con_preio, /* uint16 (*pre_io)(UNIT *uptr, uint16 chan)*/ /* Start I/O */
con_startcmd, /* uint16 (*start_cmd)(UNIT *uptr, uint16 chan, uint8 cmd)*/ /* Start command */
con_haltio, /* uint16 (*halt_io)(UNIT *uptr) */ /* Stop I/O */
NULL, /* uint16 (*test_io)(UNIT *uptr) */ /* Test I/O */
NULL, /* uint16 (*post_io)(UNIT *uptr) */ /* Post I/O */
con_ini, /* void (*dev_ini)(UNIT *, t_bool) */ /* init function */
con_unit, /* UNIT* units */ /* Pointer to units structure */
con_chp, /* CHANP* chan_prg */ /* Pointer to chan_prg structure */
NUM_UNITS_CON, /* uint8 numunits */ /* number of units defined */
0x0f, /* uint8 mask */ /* 2 devices - device mask */
0x7e00, /* uint16 chan_addr */ /* parent channel address */
0, /* uint32 chan_fifo_in */ /* fifo input index */
0, /* uint32 chan_fifo_out */ /* fifo output index */
{0} /* uint32 chan_fifo[FIFO_SIZE] */ /* interrupt status fifo for channel */
};
DEVICE con_dev = {
"CON", con_unit, NULL, con_mod,
NUM_UNITS_CON, 8, 15, 1, 8, 8,
NULL, NULL, &con_reset, NULL, NULL, NULL,
&con_dib, DEV_DIS|DEV_DISABLE|DEV_DEBUG, 0, dev_debug
};
/*
* Console print routines.
*/
/* initialize the console chan/unit */
void con_ini(UNIT *uptr, t_bool f) {
int unit = (uptr - con_unit); /* unit 0 */
uptr->u4 = 0; /* no input count */
con_data[unit].incnt = 0; /* no input data */
uptr->CMD &= LMASK; /* leave only chsa */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
sim_activate(uptr, 1000); /* time increment */
}
/* start a console operation */
uint16 con_preio(UNIT *uptr, uint16 chan) {
DEVICE *dptr = get_dev(uptr);
int unit = (uptr - dptr->units);
if ((uptr->CMD & CON_MSK) != 0) { /* just return if busy */
sim_debug(DEBUG_CMD, &con_dev, "con_preio unit=%02x BUSY\n", unit);
return SNS_BSY;
}
sim_debug(DEBUG_CMD, &con_dev, "con_preio unit=%02x OK\n", unit);
return 0; /* good to go */
}
/* start an I/O operation */
uint16 con_startcmd(UNIT *uptr, uint16 chan, uint8 cmd) {
int unit = (uptr - con_unit); /* unit 0 is read, unit 1 is write */
uint8 ch;
if ((uptr->CMD & CON_MSK) != 0) { /* is unit busy */
sim_debug(DEBUG_CMD, &con_dev,
"con_startcmd unit %01x chan %02x cmd %02x BUSY cmd %02x\n",
unit, chan, cmd, uptr->CMD);
return SNS_BSY; /* yes, return busy */
}
sim_debug(DEBUG_CMD, &con_dev,
"con_startcmd unit %01x chan %02x cmd %02x enter\n", unit, chan, cmd);
/* process the commands */
switch (cmd & 0xFF) {
case CON_INCH: /* 0x00 */ /* INCH command */
sim_debug(DEBUG_CMD, &con_dev, "con_startcmd %04x: Cmd INCH\n", chan);
uptr->CMD &= LMASK; /* leave only chsa */
uptr->CMD |= CON_INCH2; /* save INCH command as 0xf0 */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
if (unit == 1)
//720 sim_activate(uptr, 240); /* start us off */
sim_activate(uptr, 200); /* start us off */
return 0; /* no status change */
break;
case CON_RWD: /* 0x37 */ /* TOF and write line */
case CON_WR: /* 0x01 */ /* Write command */
/* if input requested for output device, give error */
uptr->CMD &= LMASK; /* leave only chsa */
uptr->CMD |= (cmd & CON_MSK); /* save command */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
if (unit == 1)
//720 sim_activate(uptr, 240); /* start us off */
sim_activate(uptr, 200); /* start us off */
return 0; /* no status change */
break;
case CON_RD: /* 0x02 */ /* Read command */
case CON_ECHO: /* 0x0a */ /* Read command w/ECHO */
/* if output requested for input device, give error */
uptr->CMD &= ~CON_MSK; /* remove old CMD */
uptr->CMD |= (cmd & CON_MSK); /* save command */
if (cmd == CON_ECHO) /* echo command? */
uptr->CMD |= CON_EKO; /* save echo status */
uptr->CMD |= CON_READ; /* show read mode */
atbuf = 0; /* reset attention buffer */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
if (unit == 1)
//720 sim_activate(uptr, 240); /* start us off */
sim_activate(uptr, 200); /* start us off */
return 0;
break;
case CON_NOP: /* 0x03 */ /* NOP has do nothing */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
uptr->CMD &= ~CON_MSK; /* remove old CMD */
uptr->CMD |= (cmd & CON_MSK); /* save command */
if (unit == 1)
//720 sim_activate(uptr, 240); /* start us off */
sim_activate(uptr, 200); /* start us off */
return 0; /* no status change */
break;
case 0x0C: /* 0x0C */ /* Unknown command */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
uptr->CMD &= LMASK; /* leave only chsa */
uptr->CMD |= (cmd & CON_MSK); /* save command */
if (unit == 1)
//720 sim_activate(uptr, 240); /* start us off */
sim_activate(uptr, 200); /* start us off */
return 0; /* no status change */
break;
case CON_CON: /* 0x1f */ /* Connect, return Data Set ready */
sim_debug(DEBUG_CMD, &con_dev, "con_startcmd %04x: Cmd %02x CON\n", chan, cmd);
uptr->SNS |= (SNS_DSR|SNS_DCD); /* Data set ready, Data Carrier detected */
return SNS_CHNEND|SNS_DEVEND; /* good return */
break;
case CON_DIS: /* 0x23 */ /* Disconnect has do nothing */
sim_debug(DEBUG_CMD, &con_dev, "con_startcmd %04x: Cmd %02x DIS\n", chan, cmd);
uptr->SNS &= ~(SNS_DSR|SNS_DCD); /* Data set not ready */
return SNS_CHNEND|SNS_DEVEND; /* good return */
break;
case CON_SNS: /* 0x04 */ /* Sense */
sim_debug(DEBUG_CMD, &con_dev,
"con_startcmd %04x: Cmd Sense %02x\n", chan, uptr->SNS);
/* value 4 is Data Set Ready */
/* value 5 is Data carrier detected n/u */
ch = uptr->SNS; /* status */
chan_write_byte(GET_UADDR(uptr->CMD), &ch); /* write status */
return SNS_CHNEND|SNS_DEVEND; /* good return */
break;
default: /* invalid command */
break;
}
/* invalid command */
uptr->SNS |= SNS_CMDREJ; /* command rejected */
sim_debug(DEBUG_CMD, &con_dev,
"con_startcmd %04x: Invalid command %02x Sense %02x\n",
chan, cmd, uptr->SNS);
return SNS_CHNEND|STATUS_PCHK;
}
/* Handle output transfers for console */
t_stat con_srvo(UNIT *uptr) {
uint16 chsa = GET_UADDR(uptr->CMD);
int unit = (uptr - con_unit); /* unit 0 is read, unit 1 is write */
int cmd = uptr->CMD & CON_MSK;
CHANP *chp = find_chanp_ptr(chsa); /* find the chanp pointer */
uint8 ch;
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo enter CMD %08x chsa %04x cmd = %02x\n", uptr->CMD, chsa, cmd);
/* if input tried from output device, error */
if ((cmd == CON_RD) || (cmd == CON_ECHO) || (cmd == 0xC0)) { /* check for output */
/* CON_RD: 0x02 */ /* Read command */
/* CON_ECHO: 0x0a */ /* Read command w/ECHO */
/* if input requested for output device, give error */
if (unit == 1) {
uptr->SNS |= SNS_CMDREJ; /* command rejected */
uptr->CMD &= LMASK; /* nothing left, command complete */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo Read to output device CMD %08x chsa %04x cmd = %02x\n", uptr->CMD, chsa, cmd);
chan_end(chsa, SNS_CHNEND|SNS_UNITCHK); /* unit check */
return SCPE_OK;
}
}
if ((cmd == CON_NOP) || (cmd == CON_INCH2)) { /* NOP has to do nothing */
uptr->CMD &= LMASK; /* nothing left, command complete */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo INCH/NOP unit %02x: CMD %08x cmd %02x incnt %02x u4 %02x\n",
unit, uptr->CMD, cmd, con_data[unit].incnt, uptr->u4);
if (cmd == CON_INCH2) { /* Channel end only for INCH */
int len = chp->ccw_count; /* INCH command count */
uint32 mema = chp->ccw_addr; /* get inch or buffer addr */
//FIXME - test error return for error
// int i = set_inch(uptr, mema); /* new address */
set_inch(uptr, mema); /* new address */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo INCH CMD %08x chsa %04x len %02x inch %06x\n", uptr->CMD, chsa, len, mema);
chan_end(chsa, SNS_CHNEND); /* INCH done */
} else {
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo NOP CMD %08x chsa %04x cmd = %02x\n", uptr->CMD, chsa, cmd);
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* done */
}
return SCPE_OK;
}
if ((cmd == CON_WR) || (cmd == CON_RWD)) {
int cnt = 0;
/* see if write complete */
if (uptr->CMD & CON_OUTPUT) {
/* write is complete, post status */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo write CMD %08x chsa %04x cmd %02x complete\n",
uptr->CMD, chsa, cmd);
uptr->CMD &= LMASK; /* nothing left, command complete */
/*RTC*/ outbusy = 0; /* output done */
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* done */
return SCPE_OK;
}
//Comment out clock flag 072020
//*RTC*/ outbusy = 1; /* tell clock output waiting */
/* Write to device */
while (chan_read_byte(chsa, &ch) == SCPE_OK) { /* get byte from memory */
/* HACK HACK HACK */
ch &= 0x7f; /* make 7 bit w/o parity */
sim_putchar(ch); /* output next char to device */
cnt++; /* count chars output */
}
uptr->CMD |= CON_OUTPUT; /* output command complete */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvo write wait %03x CMD %08x chsa %04x cmd %02x to complete\n",
// 41*cnt+47, uptr->CMD, chsa, cmd);
19*cnt+23, uptr->CMD, chsa, cmd);
fflush(sim_deb);
// sim_activate(uptr, 19*cnt+23); /* wait for a while */
// sim_activate(uptr, 31*cnt+47); /* wait for a while */
/*719*/ sim_activate(uptr, 41*cnt+47); /* wait for a while */
//719 sim_activate(uptr, 81*cnt+87); /* wait for a while */
}
return SCPE_OK;
}
/* Handle input transfers for console */
t_stat con_srvi(UNIT *uptr) {
uint16 chsa = GET_UADDR(uptr->CMD);
int unit = (uptr - con_unit); /* unit 0 is read, unit 1 is write */
int cmd = uptr->CMD & CON_MSK;
CHANP *chp = find_chanp_ptr(chsa); /* find the chanp pointer */
uint8 ch;
t_stat r;
// sim_clock_coschedule(uptr, tmxr_poll); /* keep polling the input */
sim_clock_coschedule(uptr, 10000); /* keep polling the input */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi enter CMD %08x chsa %04x cmd %02x incnt %02x u4 %02x\n",
uptr->CMD, chsa, cmd, con_data[unit].incnt, uptr->u4);
/* if output tried to input device, error */
if ((cmd == CON_RWD) || (cmd == CON_WR) || (cmd == 0x0C)) { /* check for output */
/* CON_RWD: 0x37 */ /* TOF and write line */
/* CON_WR: 0x01 */ /* Write command */
/* if input requested for output device, give error */
if (unit == 0) {
uptr->SNS |= SNS_CMDREJ; /* command rejected */
uptr->CMD &= LMASK; /* nothing left, command complete */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi Write to input device CMD %08x chsa %04x cmd = %02x\n", uptr->CMD, chsa, cmd);
chan_end(chsa, SNS_CHNEND|SNS_UNITCHK); /* unit check */
// fall thru return SCPE_OK;
}
}
if ((cmd == CON_NOP) || (cmd == CON_INCH2)) { /* NOP is do nothing */
uptr->CMD &= LMASK; /* nothing left, command complete */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi INCH/NOP unit %02x: CMD %08x cmd %02x incnt %02x u4 %02x\n",
unit, uptr->CMD, cmd, con_data[unit].incnt, uptr->u4);
if (cmd == CON_INCH2) { /* Channel end only for INCH */
int len = chp->ccw_count; /* INCH command count */
uint32 mema = chp->ccw_addr; /* get inch or buffer addr */
//FIXME add code to test return from set_inch
set_inch(uptr, mema); /* new address */
con_data[unit].incnt = 0; /* buffer empty */
uptr->u4 = 0; /* no I/O yet */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi INCH CMD %08x chsa %04x len %02x inch %06x\n", uptr->CMD, chsa, len, mema);
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* done */
} else {
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi NOP CMD %08x chsa %04x cmd = %02x\n", uptr->CMD, chsa, cmd);
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* NOP done */
}
/* drop through to poll input */
}
switch (cmd) {
case CON_RD: /* 0x02 */ /* read from device */
case CON_ECHO: /* 0x0a */ /* read from device w/ECHO */
if ((uptr->u4 != con_data[unit].incnt) || /* input empty */
(uptr->CMD & CON_INPUT)) { /* input waiting? */
ch = con_data[unit].ibuff[uptr->u4]; /* get char from read buffer */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi readbuf unit %02x: CMD %08x read %02x incnt %02x u4 %02x len %02x\n",
unit, uptr->CMD, ch, con_data[unit].incnt, uptr->u4, chp->ccw_count);
/* process any characters */
if (uptr->u4 != con_data[unit].incnt) { /* input available */
ch = con_data[unit].ibuff[uptr->u4]; /* get char from read buffer */
if (chan_write_byte(chsa, &ch)) { /* write byte to memory */
/* write error */
cmd = 0; /* no cmd now */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi write error unit %02x: CMD %08x read %02x u4 %02x ccw_count %02x\n",
unit, uptr->CMD, ch, uptr->u4, chp->ccw_count);
uptr->CMD &= LMASK; /* nothing left, command complete */
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* we done */
break;
}
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi write to mem unit %02x: CMD %08x read %02x u4 %02x incnt %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt);
/* character accepted, bump buffer pointer */
uptr->u4++; /* next char position */
/* see if at end of buffer */
if (uptr->u4 >= sizeof(con_data[unit].ibuff))
uptr->u4 = 0; /* reset pointer */
/* user want more data? */
if ((test_write_byte_end(chsa)) == 0) {
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi need more unit %02x CMD %08x u4 %02x incnt %02x ccw_count %02x\n",
unit, uptr->CMD, uptr->u4, con_data[unit].incnt, chp->ccw_count);
/* user wants more, look next time */
if (uptr->u4 == con_data[unit].incnt) { /* input empty */
uptr->CMD &= ~CON_INPUT; /* no input available */
}
break;
}
/* command is completed */
cmd = 0; /* no cmd now */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi read done unit %02x: CMD %08x read %02x u4 %02x incnt %02x ccw_count %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt, chp->ccw_count);
uptr->CMD &= LMASK; /* nothing left, command complete */
if (uptr->u4 != con_data[unit].incnt) { /* input empty */
uptr->CMD |= CON_INPUT; /* input still available */
}
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* we done */
break;
}
}
break;
}
/* check for next input if reading or @@A sequence */
r = sim_poll_kbd(); /* poll for a char */
if (r & SCPE_KFLAG) { /* got a char */
ch = r & 0xff; /* drop any extra bits */
if ((uptr->CMD & CON_INPUT) == 0) { /* looking for input? */
atbuf = 0; /* reset attention buffer */
uptr->CMD &= ~CON_ATAT; /* no @@A input */
if (ch == '@') { /* maybe for console int */
atbuf = (ch)<<8; /* start anew */
uptr->CMD |= CON_ATAT; /* show getting @ */
}
if (ch == '\n') /* convert newline */
ch = '\r'; /* make newline into carriage return */
#ifdef TESTING
if (ch == 3) { /* see if <clt>C */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi ctrl^C readch unit %02x: CMD %08x read %02x u4 %02x incnt %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt);
}
#endif
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi handle readch unit %02x: CMD %08x read %02x u4 %02x incnt %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt);
if (uptr->CMD & CON_EKO) /* ECHO requested */
sim_putchar(ch); /* ECHO the char */
/* put char in buffer */
con_data[unit].ibuff[con_data[unit].incnt++] = ch;
/* see if count at max, if so reset to start */
if (con_data[unit].incnt >= sizeof(con_data[unit].ibuff))
con_data[unit].incnt = 0; /* reset buffer cnt */
uptr->CMD |= CON_INPUT; /* we have a char available */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi readch unit %02x: CMD %08x read %02x u4 %02x incnt %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt);
// return sim_activate (uptr, 30); /* come back real soon */
return SCPE_OK;
}
/* not looking for input, look for attn or wakeup */
if (ch == '?') {
/* set ring bit? */
set_devwake(chsa, SNS_ATTN|SNS_DEVEND|SNS_CHNEND); /* tell user */
}
/* not wanting input, but we have a char, look for @@A */
if (uptr->CMD & CON_ATAT) { /* looking for @@A */
/* we have at least one @, look for another */
if (ch == '@' || ch == 'A' || ch == 'a') {
uint8 cc = ch;
if (cc == 'a')
cc = 'A'; /* make uppercase */
sim_putchar(ch); /* ECHO the char */
atbuf = (atbuf|cc)<<8; /* merge new char */
if (atbuf == 0x40404100) {
attention_trap = CONSOLEATN_TRAP; /* console attn (0xb4) */
atbuf = 0; /* reset attention buffer */
uptr->CMD &= ~CON_ATAT; /* no @@A input */
sim_putchar('\r'); /* return char */
sim_putchar('\n'); /* line feed char */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi unit %02x: CMD %08x read @@A Console Trap\n", unit, uptr->CMD);
uptr->u4 = 0; /* no input count */
con_data[unit].incnt = 0; /* no input data */
}
return SCPE_OK;
}
/* char not for us, so keep looking */
atbuf = 0; /* reset attention buffer */
uptr->CMD &= ~CON_ATAT; /* no @@A input */
}
/* not looking for input, look for attn or wakeup */
if (ch == '@') {
atbuf = (atbuf|ch)<<8; /* merge in char */
uptr->CMD |= CON_ATAT; /* show getting @ */
sim_putchar(ch); /* ECHO the char */
}
/* assume it is for next read request, so save it */
/* see if count at max, if so reset to start */
if (con_data[unit].incnt >= sizeof(con_data[unit].ibuff))
con_data[unit].incnt = 0; /* reset buffer cnt */
if (uptr->CMD & CON_EKO) /* ECHO requested */
sim_putchar(ch); /* ECHO the char */
/* put char in buffer */
con_data[unit].ibuff[con_data[unit].incnt++] = ch;
uptr->CMD |= CON_INPUT; /* we have a char available */
sim_debug(DEBUG_CMD, &con_dev,
"con_srvi readch2 unit %02x: CMD %08x read %02x u4 %02x incnt %02x\n",
unit, uptr->CMD, ch, uptr->u4, con_data[unit].incnt);
}
return SCPE_OK;
}
t_stat con_reset(DEVICE *dptr) {
tmxr_set_console_units (&con_unit[0], &con_unit[1]);
return SCPE_OK;
}
/* Handle haltio transfers for console */
uint16 con_haltio(UNIT *uptr) {
uint16 chsa = GET_UADDR(uptr->CMD);
int cmd = uptr->CMD & CON_MSK;
int unit = (uptr - con_unit); /* unit # 0 is read, 1 is write */
CHANP *chp = find_chanp_ptr(chsa); /* find the chanp pointer */
sim_debug(DEBUG_EXP, &con_dev, "con_haltio enter chsa %04x cmd = %02x\n", chsa, cmd);
/* terminate any input command */
/* UTX wants SLI bit, but no unit exception */
/* status must not have an error bit set */
/* otherwise, UTX will panic with "bad status" */
if ((uptr->CMD & CON_MSK) != 0) { /* is unit busy */
sim_debug(DEBUG_CMD, &con_dev,
"con_haltio HIO chsa %04x cmd = %02x ccw_count %02x\n", chsa, cmd, chp->ccw_count);
// stop any I/O and post status and return error status */
chp->chan_byte = BUFF_EMPTY; /* there is no data to read/store */
// chp->ccw_count = 0; /* zero the count */
chp->ccw_flags &= ~(FLAG_DC|FLAG_CC); /* reset chaining bits */
uptr->CMD &= LMASK; /* make non-busy */
uptr->u4 = 0; /* no I/O yet */
con_data[unit].incnt = 0; /* no input data */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
sim_debug(DEBUG_CMD, &con_dev,
"con_haltio HIO I/O stop chsa %04x cmd = %02x\n", chsa, cmd);
// chan_end(chsa, SNS_CHNEND|SNS_DEVEND|SNS_UNITEXP); /* force error */
chan_end(chsa, SNS_CHNEND|SNS_DEVEND); /* force end */
return SCPE_IOERR;
}
uptr->u4 = 0; /* no I/O yet */
con_data[unit].incnt = 0; /* no input data */
uptr->CMD &= LMASK; /* make non-busy */
uptr->SNS = SNS_RDY|SNS_ONLN; /* status is online & ready */
return SCPE_OK; /* not busy */
}
#endif
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