Search found 3 matches

by wyatt8740
August 7th, 2020, 4:58 pm
Forum: Research
Topic: Old 160pin GPU Pinout & Rendering Differences
Replies: 8
Views: 30168

Re: Old 160pin GPU Pinout & Rendering Differences

And, I've also noticed that the CPUs are a bit different: CXD8530BQ (EARLY-PU-8) and CXD8530CQ (LATE-PU-8) are both having PRID (cop0 register15) set to 00000001h, whilst CXD8606BQ (PM-41, PSone) as PRID=00000002h. Are there any known differences between old/new CPUs? Timings, pinouts, instruction ...
by wyatt8740
June 5th, 2020, 3:57 am
Forum: Hardware
Topic: PSNee further development
Replies: 570
Views: 950731

Re: PSNee further development

Hi guys, is anyone aware of problems with replacement (china) CD drives and psnee? I've used it fine with PSnee on a launch PSX that had a chinese clone drive for a while. Then I got a -9001 with a stripped gear that I replaced and I moved its drive into it. I've flashed an Arduino NANO ATMega128p ...
by wyatt8740
May 21st, 2020, 6:45 am
Forum: Hardware
Topic: PSNee further development
Replies: 570
Views: 950731

Re: PSNee further development

Mine's a PU-8(1) board (meaning it has the dual-ported VRAM and old GPU), so I'm out of luck with the easy dual-oscillator mod I guess. Also the case is incredibly brittle and all the screw posts are gone so it's held together with hot glue so I try to avoid re-opening it (requires prying on brittle...