On Monday, September 18, 2017 07:04:59 AM William Stillwell wrote:
Check you clock signal on a scope, does the board have a two speed clock when access slow ram? Everything I have random read issues it's always a buggured clock.. it maybe good enough for the 2650 but not for the z80
Clock signal looks good on my 'scope. Single clock speed, nothing fancy. Just a good old square wave. I've written my own test ROMs for these boards, so I know that the memory itself is good, and accessing it from the actual 2650 CPU is fine. It's only when using the Z80 pod + adapter that things go wrong. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/