From: Bryan Pope (bpope_at_wordstock.com)
Date: 2007-03-19 20:54:30
And thusly were the wise words spake by =?iso-8859-1?Q?=22Andr=E9_Fachat=22?= > > > > > 2. With a 2031, it powers up correctly but whenever you try to do any > > disk access like get a directory or header a disk, the computer hangs > > until I power off the 2031. I have already swapped the ROMs and the > > 6522, but the problem still persists. I haven't swapped the > > 75160 and/or 75161 yet. Could one of these be the problem and if > > so which one should I swap first? I am trying to minimize any > > desoldering/soldering... > > IIRC the 75161 is the control lines driver (ATN, NDAC, ...). This > would be the one that would cause a hang. However, I'd rather > measure the input/output signals to check what's wrong before > unsoldering any other ICs. > Is there a webpage that describes how to measure the I/O signals? Do I need to use an oscilloscope or will a multimeter do? Do I need some sort of breakout box? Thanks!, Bryan Message was sent through the cbm-hackers mailing list
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