Correct parts for RAM / ROM upgrade for c103253 rev1 mboard

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microman
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Correct parts for RAM / ROM upgrade for c103253 rev1 mboard

Post by microman »

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
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exxos
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Re: Correct parts for RAM / ROM upgrade for c103253 rev1 mboard

Post by exxos »

It all looks okay. Please note, unless you are very good at soldering then I would recommend getting the preassembled shifter board.
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microman
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Joined: Fri Jan 28, 2022 3:55 pm

Re: Correct parts for RAM / ROM upgrade for c103253 rev1 mboard

Post by microman »

Thanks

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

Peter
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Re: Correct parts for RAM / ROM upgrade for c103253 rev1 mboard

Post by exxos »

microman wrote: Fri Jan 28, 2022 9:38 pm 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.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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