pinging Jim Brain

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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> Date: 4/15/2006
>  
> 

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