From: Jack Rubin (jack.rubin_at_ameritech.net)
Date: 2006-04-16 16:28:01
Jim Brain, please contact me offlist re KIM-1 history
Thanks!
Jack
jack[dot]rubin[at]ameritech[dot]net
> -----Original Message-----
> From: owner-cbm-hackers@ling.gu.se
> [mailto:owner-cbm-hackers@ling.gu.se] On Behalf Of Nicolas Welte
> Sent: Sunday, April 16, 2006 6:21 AM
> To: cbm-hackers@ling.gu.se
> Subject: Re: 8250 and C64 disks
>
>
> Nicolas Welte wrote:
> > I will have a look at your nasty file creation problem. Did
> you try to
> > specify a filename without a path, so the current directory
> is used? I
> > also had no trouble when the current directory was in e.g.
> > c:\diskimage and I called the program from there, e.g.
> "c:\bin\imgrd
> > testdisk".
>
> The problem was caused by having only 8 character reserved for the
> filename. You are supposed to enter only the name, without a path or
> extension. The extension is added automatically based on the
> disk type.
>
> I "fixed" this and you can now specify a path as well. The
> version can
> be downloaded here: http://people.freenet.de/x1541/IMGRD.EXE
>
> I had a look at the 4040 problem as well. It seems I use a ROM vector
> that does not exist in the 4040 DOS. I will have to rewrite
> my code to
> use RAM variables directly, because the RAM locations are
> equal enough
> in all dual drives. At least I hope so.
>
> I also tried to repair my 4040, without success so far. I checked the
> following:
>
> 1. repaired power cable
> 2. 3 blinks. $E DOS ROM bad, replaced.
> 3. 5 blinks. checked 6504 (swapped with a printer). checked 6530
> (swapped with SFD1001), even made a 2716 EPROM for the adaptor board
> from the SFD. No success.
>
> Does anyone have an idea what can cause 5 blinks on a 4040
> besides the
> disk controller CPU (6504) and RAM/ROM (6530)?
>
> Nicolas
>
>
>
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>
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