MAME SVN History

199869 Revisions

r197604 Sunday 4th June, 2023 at 18:48:59 UTC by mark.garlanger
z80.cpp - Add EI to IM0 handler (#11307) * z80.cpp - Add EI to IM0 handler The heath/h89.cpp with a z37 soft-sectored controller uses IM0 and places an EI instruction on the bus when DRQ signal is received from the WD disk controller. I'm putting this part up early to get comments. Maybe someone with more experience with the z80 code could implement the top TODO in this file ``` - Interrupt mode 0 should be able to execute arbitrary opcodes ```

r197604 Sunday 4th June, 2023 at 18:48:59 UTC by mark.garlanger

z80.cpp - Add EI to IM0 handler (#11307)

* z80.cpp - Add EI to IM0 handler

The heath/h89.cpp with a z37 soft-sectored controller uses IM0 and places an EI instruction on the bus when DRQ signal is received from the WD disk controller.

I'm putting this part up early to get comments. Maybe someone with more experience with the z80 code could implement the top TODO in this file
```
- Interrupt mode 0 should be able to execute arbitrary opcodes
```

[/branches/vga_modern-2/src/devices/cpu/z80]

z80.cpp

https://github.com/mamedev/mame/commit/bdb2a2af7ebd3a07964926eaae30415bff1d6b06

199869 Revisions