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PR77 · 17 January 2018, 22:54

Excellent!

New CPLDs have brought me some luck! Got the next step working. Basic synchronised 14MHz acceleration. With FastRAM I was actually expecting better performance to be honest. Still needs investigation to see if the /DTACK is being in-necessarily delayed.

I got the odd GURU in the FastRAM range so I need to check my calculations for RAM access. I'm using 55ns SRAMs and they might be borderline. Any thoughts community?

Anyways, I'm super happy with this! I promise a GitHub page soon, but I really want to focus on getting the fundamentals up.

>>> I've noticed that now SYSINFO is correctly reporting "Display" as STD DENISE. Some other screen shots AGA LISA CHIP. I have absolutely no idea why... Anyone got a clue?

17 January 2018, 22:54	#19
PR77 Registered User Join Date: Oct 2017 Location: Germany Posts: 193	Excellent! New CPLDs have brought me some luck! Got the next step working. Basic synchronised 14MHz acceleration. With FastRAM I was actually expecting better performance to be honest. Still needs investigation to see if the /DTACK is being in-necessarily delayed. I got the odd GURU in the FastRAM range so I need to check my calculations for RAM access. I'm using 55ns SRAMs and they might be borderline. Any thoughts community? Anyways, I'm super happy with this! I promise a GitHub page soon, but I really want to focus on getting the fundamentals up. >>> I've noticed that now SYSINFO is correctly reporting "Display" as STD DENISE. Some other screen shots AGA LISA CHIP. I have absolutely no idea why... Anyone got a clue? Attached Thumbnails Last edited by PR77; 17 January 2018 at 22:56. Reason: SYSINFO Display reporting