FALCOR4

Thanks for doing this, @visrealm. A solution like this has been needed for long time for all of the broken Mitsumi keyboards out there. You've done us all a great service.

Yeah, I'm not seeing it there either and I've also been looking for it. I'm definitely missing something, too.

Does anyone here actually program x86-32/64 in assembly? Reading the Hackaday article regarding real mode and the Wiki on the instruction set, its mind boggling that the human mind can work with 3600 some odd instructions and juggle memory management! There must be some pretty good toolsets out there or something.

I haven't unpacked all of my stuff since the move so I'm not able to get to it. I do have this PDF in my archives; it needs to be verified that it is the actual switch. GF-126-0018 TI PSBoard switch.PDF

Lee's explanation on how SAMS cards greater than 1 Meg need to be addressed is spot on. It is probably smart to just assume that any software that is written for SAMS is for cards that are over 1 Meg and that would make it universal for any SAMS card. SAMS registers explained_Srt_AP edits.rtf

Yes, thank you Fred! Outstanding!

I've been using the Wathai 110V 115V 120V 220V 240V Brushless Fans <80mm x 25mm> from Amazon. They're an easy replacement and are about (subjective here, mind you) half the noise of the OEM fan.

That's a good one!

It's my original 80k GramKracker. I just have it sitting on the fire hose connector.

Like finding lost treasure. I combined this cartridge back in the 80's because at the time I was using these cartridges the most during programming. I located it again years ago, but it was subsequently misplaced in a move. Rummaging through boxes I found it again! It's not so significant anymore with all the new cartridge choices we have but it was handy BITD. Just sharing for the fun of it. 20240217_111330.mp4

You must be talking about someone I used to work with <lol>, did pretty much the same thing. To add insult to injury, he would routinely throw his empty can of sardines into other people's trash cans.

There's a lot of truth in that. When I started, we had an incredible engineering guide book that was an absolute treasure. It covered wiring, connectors, schematic generation, component selection, environmental considerations, etc. Sometime afterwards, it disappeared when the organization "re-organized." If you weren't one of the lucky ones who kept a copy, it was lost to eternity. Unfortunately, those were the days of the typewriter so there is no online copy, at least not that I've found that has been uploaded. Over the years that followed I could see the new engineers coming in repeating mistakes and relearning the hard way because they didn't have the benefit of a mentor or proper guidance. I called it the "divide by zero" problem, when will we ever learn? 🙂

@matthew180, other than cost, is there any reason to not use the S13V20F5 or S13V15F5? Is there a difference, for example, with the output ripple? Also, I recall a thread that talked about recommended capacitors for these units but can't find it at the moment.

Were there four versions of this controller?

If using SRAM that has the possibility of being corrupted (ex: low battery voltage) then don't forget a switch to disable the DSR space or you may risk a constant cycle of lockups upon powerup.