Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-01 18:41:47 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Made /READY timing accurate to the real chip as best as possible. Note that on the zaccaria games, possibly due to a bug in the CA2 line handler of the PIA which reads the /READY state, speech usually won't work until midway through the first game played, but works fine afterward. Not sure if that's a MAME bug or an original game bug. [Lord Nightmare].

Browse Source
This commit is contained in:
Jonathan Gevaryahu 2010-04-25 22:59:49 +00:00
parent 2e9ac225df
commit 764e72f5c2
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/emu/sound/tms5220.c
View File

@ -1483,11 +1483,11 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_rsq_w )
logerror("Schedule write ready\n");
#endif
tms->io_ready = 1;
/* 100 nsec from data sheet */
timer_set(tms->device->machine, ATTOTIME_IN_NSEC(100), tms, 0, io_ready_cb); // goes low nearly immediately, i.e. within 3 cycles
/* 100 nsec from data sheet, through 3 asynchronous gates on patent */
timer_set(tms->device->machine, ATTOTIME_IN_HZ(device->clock), tms, 0, io_ready_cb); // goes immediately, within one clock
tms->io_ready = 0;
/* 25 usec in datasheet, but zaccaria won't work */
timer_set(tms->device->machine, ATTOTIME_IN_USEC(100), tms, 1, io_ready_cb); // this should take around 12-15 cycles to complete
timer_set(tms->device->machine, ATTOTIME_IN_HZ(device->clock/11), tms, 1, io_ready_cb); // this should take around 10-16 (closer to ~11) cycles to complete
}
}
}
@ -1531,9 +1531,9 @@ WRITE_LINE_DEVICE_HANDLER( tms5220_wsq_w )
{
///* high to low - schedule ready cycle*/
tms->io_ready = 1;
timer_set(tms->device->machine, ATTOTIME_IN_NSEC(100), tms, 0, io_ready_cb); // goes low nearly immediately, i.e. within 3 ccyles
timer_set(tms->device->machine, ATTOTIME_IN_HZ(device->clock), tms, 0, io_ready_cb); // goes immediately, within one clock
tms->io_ready = 0;
timer_set(tms->device->machine, ATTOTIME_IN_USEC(25), tms, 1, io_ready_cb); // this should take around 12-15 cycles to complete
timer_set(tms->device->machine, ATTOTIME_IN_HZ(device->clock/15), tms, 1, io_ready_cb); // this should take around 10-16 (closer to ~15) cycles to complete
}
}
}