Galactic Expansion Board
When I got a SYM-1 again, I needed to add ROMs, RAM and it would be nice to have the 1541 DOS finally operational (I had...

C, Basic, RAE on the SYM-1
Wayne Parham of Parhamdata has an interesting page on his VIM-1 and SYM-1 systems. He has written some interesting pa...

SYMulator a SYM-1 emulator
SYMulator  is a working SYM-1 simulator by Andrew Dunn for Windows. It is based on a modified version of Daryl Rictor's ...

SYM-1 MOD-68 MOD-69
MOD-68, MOD-69, SYM-1/68, SYM-1/69 The MOD-69 and MOD-68 replace the 6502 with a Motorola 6809 or 6802 CPU on an adapto...