folkert/simh-testsetgenerator
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

AltairZ80: Additional checks for stop_cpu condition

Browse source
This commit is contained in:
Peter Schorn 2023-04-20 17:05:48 +02:00 • committed by Paul Koning
parent 044ba02847
commit 1aa76cca6e
1 changed files with 13 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
AltairZ80/altairz80_sio.c
View file

@ -770,6 +770,11 @@ static int32 sio0sCore(const int32 port, const int32 io, const int32 data) {
pollConnection(); pollConnection();
if (io == 0) { /* IN */ if (io == 0) { /* IN */
if (sio_unit.u4) { /* attached to a file? */ if (sio_unit.u4) { /* attached to a file? */
ch = sim_poll_kbd(); /* yes, check for stop condition first */
if ((ch == SCPE_OK) && stop_cpu) {
sim_interval = 0; /* detect stop condition as soon as possible*/
return spi.sio_cannot_read | spi.sio_can_write; /* do not consume stop character */
}
if (sio_unit.u3) /* character available? */ if (sio_unit.u3) /* character available? */
return spi.sio_can_read | spi.sio_can_write; return spi.sio_can_read | spi.sio_can_write;
ch = getc(sio_unit.fileref); ch = getc(sio_unit.fileref);
@ -783,6 +788,11 @@ static int32 sio0sCore(const int32 port, const int32 io, const int32 data) {
} }
} }
if (sio_unit.flags & UNIT_ATT) { /* attached to a port? */ if (sio_unit.flags & UNIT_ATT) { /* attached to a port? */
ch = sim_poll_kbd(); /* yes, check for stop condition first */
if ((ch == SCPE_OK) && stop_cpu) {
sim_interval = 0; /* detect stop condition as soon as possible*/
return spi.sio_cannot_read | spi.sio_can_write; /* do not consume stop character */
}
if (tmxr_rqln(&TerminalLines[spi.terminalLine])) if (tmxr_rqln(&TerminalLines[spi.terminalLine]))
result = spi.sio_can_read; result = spi.sio_can_read;
else { else {
@ -798,9 +808,9 @@ static int32 sio0sCore(const int32 port, const int32 io, const int32 data) {
return spi.sio_can_read | spi.sio_can_write; return spi.sio_can_read | spi.sio_can_write;
ch = sim_poll_kbd(); /* no, try to get a character */ ch = sim_poll_kbd(); /* no, try to get a character */
if ((ch == SCPE_OK) && stop_cpu) { if ((ch == SCPE_OK) && stop_cpu) {
sim_interval = 0; /* detect stop condition as soon as possible*/ sim_interval = 0; /* detect stop condition as soon as possible*/
return spi.sio_cannot_read | spi.sio_can_write; /* do not consume stop character */ return spi.sio_cannot_read | spi.sio_can_write; /* do not consume stop character */
} }
if (ch) { /* character available? */ if (ch) { /* character available? */
sio_unit.u3 = TRUE; /* indicate character available */ sio_unit.u3 = TRUE; /* indicate character available */
sio_unit.buf = ch; /* store character in buffer */ sio_unit.buf = ch; /* store character in buffer */