From: Sam Laur (slaur_at_utu.fi)
Date: 2003-08-13 17:53:26
Gianmario.Scotti@nokia.com wrote: > As usual, I got hold of a broken C-64 (three, actually), with an > interesting problem: when turned on, it randomly displays > "818 MEMORY FREE" or "326 MEMORY FREE". > My first thought was that one of the RAMs is faulty, but am I correct > to suppose so? Is there some other part I could point my finger of blame at? I've repaired several C64 and C128 with broken DRAM chips. The problem is usually with trying to identify the correct chip. This can be done with the schematics and (slight overkill) something like Action Replay. Most of the broken chips worked OK in most addresses, more than half of them were faulty at 256-byte (bit) intervals and not completely dead. Message was sent through the cbm-hackers mailing list
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