Recent content by demik

Can confirm this is a good idea and they work great. Used them in a few of my 030 schenanigans. Overall, nice progress !

Only the W65C22N, the W65C22S is still produced in PLCC form (for now). I've tested one in a 512ke bench board, it works fine except reading the 1Hz tick from the RTC. It isn't behaving as expected. Think it's juste one pull-up away but didn't had time to test it Don't have any SE/30 bench...

If the daughtercard is this one Then there is high chances that the ribbon cable is broken

Build by @Jockelill with the red aluminium case

Best resistor value

Looks like a fine list for me. Pretty sure I used 1/4W resistors with values close enough (like 6.8kΩ or 7.5kΩ should work fine). 12V rails are actually overkill in modern PSUs, it's the -12V that's sometimes missing. You can split the +12V in whatever arrangement you want, it should work fine.

First congratulation for your build. Interesting about the issue, this is the first time someone had an issue with controllers compatibility. Like @sfiera said, there is a few differences with PAL and NTSC controllers. Maybe some Nintendo specialist can chime in TashPad only pull Latch with a...

No idea where the issues lies, but you I can help you check the basic signals Check "clock" signal continuity like this (page 5) - CL1 should be in the kHz range, probably around 12 kHz ( short pulses, may be off by a factor or 2-4 depending on LCD model ) - CL2 should be around 1.9 MHz ( about...

Very insignful thank you! Looked a lot of them and didn't find anything really major. Guess the biggest difference is between Found a dead 820-0615-A over here and it has the ASCO sound chip whereas yours are the CS4216 one. Reading through both data sheets, it seems that there they do have...

That crossed my mind, except they used the ASCO Codec in the later revision, which is the IC that was "caned". Fair enough on the first part. Could it be an US vs EU production as well ? I've always got hand on rev A boards over here. What do you guys have on the other side of the pond ...

Hello, This thread is mostly documentation. While probing on my lab board, I noticed that there is multiple revisions of boards around with major differences. Is this something known ? Having some minor revisions around is a common thing, but there it seems that there is a lot more going on in...

+1 this is fine

For some reason I missed this… Awesome build :) I'm liking the overlay menu a lot

It has its own "line" but it's really the common ADB data line. Has nothing to do with the keyboard matrix. The trackball is basically the same as a mouse but upside down in this series Is it visible with ADB parser or equivalent ?

Following this closely as I've tried the SRAM + memory hole punch before and failed Already learned a lot as usual. I hope you will be successful in your build