sputnik
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Gengtech RAM+ HP 2MB Memory upgrade for Atari ST
This is for the earlier machines that don't take SIMMs - 520ST, 260ST, etc. Also should work with an STF/M as they are basically the same, however I've not done this msyelf.
It's an easy solderless upgrade, the process involves :
I've had this working in a 520ST for many years without a hitch, giving a total of 2.5Mb.
On the board, there are 16 empty 128k DRAM slots which mean you could upgrade it to 4MB if you can source the DRAMs.
Gengtech RAM+ HP 2MB Memory upgrade for Atari ST
This is for the earlier machines that don't take SIMMs - 520ST, 260ST, etc. Also should work with an STF/M as they are basically the same, however I've not done this msyelf.
It's an easy solderless upgrade, the process involves :
- Removal of the MMU & shifter chips (I will supply an IC/PLCC extrator for this purpose)
- Connecting 2 x grounds to the printer port
- Connecting jump lead to a 5v source (I used the power supply)
Total job takes less than 10 minutes
I've had this working in a 520ST for many years without a hitch, giving a total of 2.5Mb.
On the board, there are 16 empty 128k DRAM slots which mean you could upgrade it to 4MB if you can source the DRAMs.