Hallo allemaal, I designed and built a 6530 replacement, please see: http://www.baltissen.org/newhtm/6530repl.htm The problem: it doesn't work :( I get five blinks on my 8250LP, meaning: error zero page RAM 6530. Please have a look at the schematic and maybe you can see if I am overlooking something. Many thanks! Adding to the problem: I cannot upload a program to the 8250 in this state and thus cannot test the circuit with it. One idea is to replace the original EPROM with one that checks my design, writes its findings to memory and tells the bus system everything is OK. With a memory-read I then can read the results. But a bit far searched IMHO. So other ideas are welcome! -- Kind regards / Met vriendelijke groet, Ruud Baltissen www.Baltissen.org Message was sent through the cbm-hackers mailing listReceived on 2013-10-08 17:00:05
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