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  1. As long as pop everything you pushed onto the stack and there hasn't been a stack overflow, you should be fine. There should be a jmp vector for a soft reset on the CX16, but I don't have it at hand.
  2. The only stupid question is one not asked. Good luck with your project!
  3. SYS calls a machine language subrotine. End your C with a return() or 6502 with a RTS. The BASIC will resume and execute the next statement after the SYS call. Assuming the state of the BASIC interpreter has been unmodified (ZP variables, etc) and the system stack is still intact.
  4. Same. My original thought was to transplant my 400 into a Unicomp Model-M, but it's not 1 to 1 keywise. If I had a hugeass 3D printer to make a custom case, I might try my hand at a real retro mod. I'm on the same boat as you. Waiting for a commercial custom case.
  5. The specs are all on that site. The keyboard is kind of nonstandard. I'm thinking you'd have almost use the same layout as the original 400. Maybe Perifractic could provide us with a LEGO RPi400 mod. lol
  6. In case someone was wondering, this site has a pinout for the keyboard ribbon cable if someone wants to case / keyboard mod their 400 with custom mechanical keys. https://www.40percent.club/2020/12/orthopi.html
  7. I used to write graphic conversion stuff in DOS back in the day. TGA is pretty straight forward.
  8. TGA (Targa) format might be an option. If you use simple run length encryption to some compact the image data. https://en.wikipedia.org/wiki/Truevision_TGA
  9. Loving my RPi400 so far. It's very portable and I've gotten connectors to connect it almost any display I can 'hijack' (DVI, VGA, DisplayPort). I've been inside it and see the keyboard ribbon cable appears to be a simple lattice for scanning key states and all the decoding must be on the main PCB. I'm sure there will be some engineering types willing to pull apart the keyboard and get a pinout. I could but I've have had real bad luck with screw/bolt modding IBM model M's and not willing to burn up $100. I will welcome a custom 3D printed enclosure with Cherry MX keys that would accommodate the RPi400 guts. Also, add an audio-out jack hack while you're at it.
  10. Civ VI is the only real modern game I still play. I used to be sucked into the whole MMORPG genre for years and have left, as it's all gone Asian-Easy-Mode pay-to-play with lockboxes, microtransactions, and no story. I've recently moved off of Windows and have adopted Linux. The Bad and the Good?: Fewer games and a target rich environment for game developers. Same with any platform that gains popularity.
  11. My 400 should be here in a few days. Planning on a case mod to either recolor (purple/white not my thing), or transplant the psb into custom mechanical keyboard. Anyone know the pinout on the keyboard ribbon cable? I could trace it.
  12. I made the plunge. I found a place that had one in stock and snagged it quick.
  13. I've aways thought of putting a system inside a Unicomp Model-M. Wedge All-In-One's are awesome. The RPi 400 has the benefit of being more portable than toting around a battleship keyboard. Nice little system. I will have to snag one.
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