exxos's Atari, Amiga & retro forum

Further to my questions re RAM upgrades & ROM upgrades Please check that I am indending to order all the parts /kits necessary to upgrade my 520STFM with C103253 Rev 1 motherboard and TOS 1.02 in 2 x 28 pin masked ROMs.

ROM
a) TOS 1.04 6 Chip Set (119)
b) 4 x 28pin DIP sockets (221)

RAM
c) 1 - 4 Mb ST/F/M RAM board (35)
d) shifter pcb kit (214)
e) 15 cm RAM ribbon cable (25) not sure of length needed! (otions 14, 25, or 149)
f) header pins (132)

Please advise on any ommissions / corrections.

Thanks

Peter

It all looks okay. Please note, unless you are very good at soldering then I would recommend getting the preassembled shifter board.

Thanks

So the short 15 cm cable is the correct one for the c103253 mother board.?

Peter

microman wrote: 28 Jan 2022 21:38 So the short 15 cm cable is the correct one for the c103253 mother board.?

Looks like the MMU is very close to the shifter, so the shortest cable 15cm I would assume would be correct. Though I have not personally fitted one to that machine.