From: Bryan Pope (bpope_at_wordstock.com)
Date: 2007-03-20 18:26:34
And thusly were the wise words spake by William Levak > > On Mon, 19 Mar 2007, Bryan Pope wrote: > > > > > > > 1. I have a 4040 that when powered up the LEDs blink nine times. I > > can't find a flash code table for the 4040 at zimmers.net, but for > > the 8050 it says it is the Common RAM, $4000 - $43FF. Could this be > > the same for the 4040? > > Common RAM $4000-43FF is 2 2114's at UF4 and UF5. > So it is that same two RAM chips is the 8050? > > 2. With a 2031, it powers up correctly but whenever you try to do any > > disk access like get a directory or header a disk, the computer hangs > > until I power off the 2031. I have already swapped the ROMs and the > > 6522, but the problem still persists. I haven't swapped the > > 75160 and/or 75161 yet. Could one of these be the problem and if > > so which one should I swap first? I am trying to minimize any > > desoldering/soldering. > > Can you read the error channel when the drive powers up? > No.. I tried doing ?ds$ like Bill D. suggested, but the C= hangs like before. > When you try to read a disk, does the drive motor turn on? Does the head > step? What do the LED's do? > No drive motor turning on or head stepping. Also the LEDs stay off. Thanks, Bryan Message was sent through the cbm-hackers mailing list
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