GitHub – TechPaula/LT6502: A 6502 based laptop design Skip to content You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. Dismiss alert TechPaula / LT6502 Public Notifications You must be signed in to change notification settings Fork 0 Star 7 A 6502 based laptop design License MIT license 7 stars 0 forks Branches Tags Activity Star Notifications You must be signed in to change notification settings TechPaula/LT6502 main Branches Tags Go to file Code Open more actions menu Folders and files Name Name Last commit message Last commit date Latest commit History 184 Commits 184 Commits Case Case Images Images Schematics Schematics Software Software .gitignore .gitignore LICENSE LICENSE README.md README.md View all files Repository files navigation LT6502 A 6502 based laptop design Yes, I know I’m crazy, but I figured why not. I’m enjoying working the PC6502 project but having a little tower of PCBs on the sofa isn’t the best. It’s very simple, these are the specs 65C02 running at 8MHz 46K RAM BASIC in ROM 65C22 VIA (for timers and some IO) 9″ DIsplay (with built in font/simple graphics) Built in keyboard Compact Flash for storage 10000mAh battery built in USBC powered/charged Serial Console 1 internal expansion slot Pictures Assembled front view Assembled rear view Assembled LHS view Assembled RHS view Assembled closed front view Assembled closed rear view Lower parts (main board, battery, keyboard) in it’s case Screen with BASIC code First bring up Status 2025-11-12 – Initial commit with work in progress PCB, Schematics complete. 2025-12-30 – PCBs arrived! 2026-01-01 – Initial power up of PCBs gives all the correct voltages 2026-01-03 – Bring up of board with simple ROM/RAM/Console working. 2026-01-04 – VIA working, ACIA working, comms to/from the keyboard in basic working. Begun integrating keyboard into firmware 2026-01-05 – Keyboard now integrated into firmware, so you can type on the keyboard and don’t need the console for input 2026-01-09 – Compact flash working, Beeper also now working. Also runs from battery just fine. 2026-01-16 – Connected a 4.3″ 800×480 RA8875 based display and got that working. I failed to get the LT7683 based display working. 2026-01-17 – work on a number of case related things that did not quite work in actual life. 2026-01-18 – Tweaked CPLD to slow down FTDI read/writes. Also begun work on bios, added start beep and begun work on load/save functions 2026-02-08 – Added more commands, notably SAVE,LOAD and DIR for compact flash 2026-02-13 – Added more graphics commands 🙂 2026-02-14 – Assembled the case In Progress Expansion board To do (probably in order) add in larger display (going to try a 10.1″ RA8889 based 1024×600, fall back is a 9″ RA8875 based 800×480) Fix buggy keyscan code on MEGA644P Memory Map The memory map is fairly stable at the mome

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