Mark Johnson 1b131a0de1 Timer module rewrite, APU clocked from timer (#280) ...

* Rework timer modules to resolve #101

Sound clock is passed to the APU but is not currently being used. Work needed to match this up.

* Rename APU frame clock.

* VHDL-2008 fix.

* Fix APU clock to 1x CPU clock.

* Clarify machine cycles in timer.

* Whitespace

* Add APU channel enables for debugging.

* Fix timer generated sound clk

R14 - Audio issues remain for 2X CPU games

* Fix issue with 2x gameboy APU sound clock

R22

* Re-implement sound clocking in timer module.

R25, Remove old code N.B. Likely a bug still here.

* Fix timer generated APU clock to 4 MiHz cycle.

R27

* Tidy up.

Remove attribution in timer module since doing a full rewrite.

* Disabling TAC can generate a clock-edge

Thanks to @paulb-nl for pointing out

* Prevent name clash

* Rework timer modules to resolve #101

Sound clock is passed to the APU but is not currently being used. Work needed to match this up.

* Rename APU frame clock.

* VHDL-2008 fix.

* Fix APU clock to 1x CPU clock.

* Clarify machine cycles in timer.

* Whitespace

* Add APU channel enables for debugging.

* Fix timer generated sound clk

R14 - Audio issues remain for 2X CPU games

* Fix issue with 2x gameboy APU sound clock

R22

* Re-implement sound clocking in timer module.

R25, Remove old code N.B. Likely a bug still here.

* Fix timer generated APU clock to 4 MiHz cycle.

R27

* Tidy up.

Remove attribution in timer module since doing a full rewrite.

* Disabling TAC can generate a clock-edge

Thanks to @paulb-nl for pointing out

* Prevent name clash

* Remove unused variable

* Set en_len_r on same cycle as en_len

* Buffer en_len to en_len_r properly

* Remove debug tools

2026-03-22 21:32:35 +08:00

4.8 KiB

Raw Permalink Blame History

View Raw