English Amiga Board - View Single Post - Amiga 500 68K Accelerator

PR77 · 01 February 2018, 22:35

Small update. Now with the MC6800 emulation working, I am having difficulties with the clock domains playing nicely (7MHz base and asynchronous CPU input). My previous "implementation" was simply using the processor for the MC6800 cycles and delaying the /DTACK to processor by 1 7MHz clock cycle. This worked fine for double performance... But who wants that!

My goal is asynchronous MC68SEC000 clocking so I can go up to 50MHz (just like my Minimig). Even 16MHz would be a good start!

01 February 2018, 22:35	#34
PR77 Registered User Join Date: Oct 2017 Location: Germany Posts: 193	Small update. Now with the MC6800 emulation working, I am having difficulties with the clock domains playing nicely (7MHz base and asynchronous CPU input). My previous "implementation" was simply using the processor for the MC6800 cycles and delaying the /DTACK to processor by 1 7MHz clock cycle. This worked fine for double performance... But who wants that! My goal is asynchronous MC68SEC000 clocking so I can go up to 50MHz (just like my Minimig). Even 16MHz would be a good start!