----- Original Message ----- From: "Nicolas Welte" <firstname.lastname@example.org> To: <email@example.com> 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: firstname.lastname@example.org / / | |___|___\ URL: http://utenti.tripod.it/danielegratteri \ \/ / \____| IRC: FIAT1100D - ICQ: 53943994 \/\/ Message was sent through the cbm-hackers mailing list
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