Hi. Thanks Spiro, that program sounds like a great idea. I made a test over ZoomFloppy (from WinVICE) and the drive 1 of the two drives. I typed in the program and run it and the first run gives "73,CBM DOS V2.6 1541,00,00" and the following runs give "00, OK,00,00". So it appears that the fault must lie at the DC VIA or the S.O bit on the 6502 (can I check this with a logic probe?). Regards, Ville Spiro Trikaliotis <ml-cbmhackers@trikaliotis.net> kirjoitti 21.4.2014 kello 23.04: > Hello, > > * On Sun, Apr 20, 2014 at 11:52:55AM +0200 silverdr@wfmh.org.pl wrote: >> Right, good point! Checking the error channel can give a good hint too! > > Exactly. > > First try: Try to speak with the drive without and disk interaction: > > 1. RESET the drive & the computer (i.e. by switching everything off and > on) > > 2. Type the following program: > 10 OPEN 1,8,15 > 20 GET#1,A$:PRINT A$;:IF ST<>64 GOTO 20 > 30 CLOSE 1 > > 3. RUN it. > > 4. Do you get any output (if yes: What?) > Or does your drive hang? > > If you get any output, the IEC connection works, and you have problem > with the drive itself. (For example, the S.O. bit on the 6502, or > the DC VIA). If your drive (or computer) hangs, then you have a > problem with the IEC bus (the 7406 drive, the BC VIA, ...) > > Tell us your result, and we might be able to help you more. > > Regards, > Spiro. > > -- > Spiro R. Trikaliotis > http://www.trikaliotis.net/ > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2014-04-22 17:00:07
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