----- Original Message -----
From: "Nicolas Welte" <welte@chemie.uni-konstanz.de>
To: <cbm-hackers@cling.gu.se>
Sent: Monday, February 25, 2002 5:37 PM
Subject: Re: 6502 to 8501: new details
> I checked the 264 schematics on Funet now, and they show that the 8501 has
> 7 processor port I/O lines, P0-P4 and P6-P7. P5 is not there! So pins 25
> and 24 on the processor socket have the wrong connection in Ruud's
schematic,
> they should be connected to PA6 and PA7 of the VIA instead. It seems the
> changes affect the serial port input lines and maybe the cassette WRT
> line.
A-ah! So, maybe you've found the problem! I'll try, as soon as possible, to
rewire the board (only four connections) and see if then it fully works.
Thanks!
____
/ ___|____ Daniele Gratteri, Italian Commodore and Amiga user / /
| | |___/ E-MAIL: daniele_gratteri@inwind.it / /
| |___|___\ URL: http://utenti.tripod.it/danielegratteri \ \/ /
\____| IRC: FIAT1100D - ICQ: 53943994 \/\/
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