MAME SVN History

199869 Revisions

r197648 Saturday 10th June, 2023 at 01:05:26 UTC by AJR
sed1200: Modernize emulation - Reduce bus to 4 bits (but note that an 8-bit variant exists), and add CS write handler to ensure multiple writes go to the correct nibbles. This results in considerable uglification of the mt32 driver code, but is more hardware-accurate. - Speculatively eliminate cursor wraparound at first and last positions. This may or may not be accurate, but seems to produce neater results. - Save state of internal variables.

r197648 Saturday 10th June, 2023 at 01:05:26 UTC by AJR

sed1200: Modernize emulation
- Reduce bus to 4 bits (but note that an 8-bit variant exists), and add CS write handler to ensure multiple writes go to the correct nibbles. This results in considerable uglification of the mt32 driver code, but is more hardware-accurate.
- Speculatively eliminate cursor wraparound at first and last positions. This may or may not be accurate, but seems to produce neater results.
- Save state of internal variables.

[/branches/vga_modern-2/src/devices/video]	sed1200.cpp sed1200.h
[/branches/vga_modern-2/src/mame/roland]	roland_mt32.cpp

https://github.com/mamedev/mame/commit/c1f4b4600a0db14cfdd775b86fa100af32b65698

199869 Revisions