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Old 22 October 2019, 11:25   #48
hooverphonique
ex. demoscener "Bigmama"

 
Join Date: Jun 2012
Location: Fyn / Denmark
Posts: 1,001
Normally U-901/2 are not in sockets. Did the previous owner install a PIO2 mod for example? Could be some waitstate/latency issue when using 040 with cache on (it's much faster).
Could you try the original CBM PAL chips?
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