Memory RAM upgrade problem. Atari 520STFM

[Wes_T]

Hello
I bought RAM memory for atari 520stfm in the store on the exxos forum.
I have a board C103175 so I bought DRAM sticks 44256BP 256x
TC514256AP
after installing I have memory errors. without these RAM's tests go through correctly original RAM MT4C4256. please advise.

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[exxos]

Your missing R71,R72,R73. Anything around 33R to 68R will be fine.

[Wes_T]

Silly me. They still in the bag.
Thank You!

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[Wes_T]

All done and working. Thank You!

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[exxos]