Am Freitag, 26. Oktober 2018, 15:52:51 CEST schrieb silverdr@wfmh.org.pl: > > On 2018-10-26, at 15:48, silverdr@wfmh.org.pl wrote: > > > > Now, we know those cases when the characters are garbled (not like garbage > > character but the character definitions are wrong). If not the CHAROM and > > not the CIA > s/CIA/PLA/ > > I meant PLA, of course... > > > then the next goto chip is the U2 CIA. Checking the bits on its Port A is > > often enough to find that the lines read wrong combination, effectively > > preventing VIC from accessing the CHAROM. Now to the interesting case. > > I've got a CIA that passes all the diagnostic tests, including both > > ports. Moreover works all well everywhere (C64 U1, 1571) as long as it is > > not the U2 position in C64. There it causes the garbled characters > > symptom. Anyone willing to take a stab at possible explanation? i'd measure if it actually manages to pull down the bank select lines -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net On the issue of evolution, the verdict is still out on how God created the Earth. <George W. Bush>Received on 2018-10-26 16:02:46
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