On Tue, Mar 28, 2023 at 08:03:37AM -0400, Louis Ciotti wrote: > Hi all, > > Getting back into Retro Computing and out of curiosity is the source for the > original 100/102 ROMs available?
While there is not original OEM source, several folks have done annotated disassemby: https://github.com/eriktier/RomT102Disassembly https://github.com/z88dk/techdocs/tree/master/targets/m100 And of course, Ken's original groundbreaking work: http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Ken%20Pettit/M100%20ROM%20Disassembly Along with Steve's helpful copy of the guide to the ROM routines, from TRS-80 Microcomputer News, Nov 1983: http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/M100%20Rom%20Routines%20summary There are commented disassemblies in the M100SIG archive, as well, although partial: https://github.com/LivingM100SIG/Living_M100SIG/tree/main/M100SIG/Lib-08-TECH-PROGRAMMING I hope this helps your rekindled enjoyment!
