From: Claus Just Rasmussen (Claus_at_just-rasmussen.dk)
Date: 2006-04-02 14:09:25
Hi Nicolas,
I have a problem reading one of the 8250 disks - one of the sectors has
a readerror.
Question: Would it be enough to remove the "exit(1);" line in the
codesnip below to ignore the error?!
chkin(unit,3);
if (ibrd (bd,buf,256L) & ERR) {
gpiberr("ibrd Error");
exit(1);
}
clrchn();
Best regards
Claus
Claus Just Rasmussen wrote:
> [ Note: This mail was converted from HTML to text by majordomo.
> Formatting might be poor. ]
>
> Hi Nicolas,
>
> It would be really nice if you'd help and modify the code. I haven't
> got any problem to look into it myself - except that I need to
> install a compiler, and I wouldn't know what to change in the
> 6502-code to make it work on 4040.
>
> Best regards,
> Claus
>
> Nicolas Welte wrote:
>
> --- Ursprüngliche Nachricht ---
> Von: Claus Just Rasmussen <Claus@just-rasmussen.dk> An: cbm-hackers@ling.gu.se Betreff: Re: 8250 and C64 disks
> Datum: Tue, 28 Mar 2006 21:35:13 +0200
>
> A combination - some 4040 disks and also imgrd, I'm afraid. The 4040
> disks explains itself, the imgrd problem was/is that if I specify a
> filename in actual path, then it'll be overwritten by something <2KB.
>
>
> Strange. I never had this problem here. But that's for using a program on
> only a single machine. You never know what happens on the next one! But I'll
> have another look into the source if there is something obvious.
>
>
>
> I managed to get my hands on a 4040 so now I've got the HW in place to
> read the disks. Really nice.
>
> Next question: Do a 4040-version of imgrd exist? If not - will I need to
> change more than the #sectors,tracks? (bitclock?)
>
>
> Of course the map of sectors per track and number of total tracks has to be
> fixed. Then some minor changes for the filename extension (d64), and the
> autodetection of doublesided disks has to be skipped. I use some 6502 code
> that gets downloaded into the drive, I have to check if this is usable on
> the 4040.
>
> If you don't feel like hacking into the source code, I can have a look and
> add an option -40 to support the 4040 drive and disk layout. (I'm sure a
> 2031 drive can't be supported so easily, because my 6502 drive code had to
> be changed to the completely different memory layout of the drive).
>
> Nicolas
>
>
> Message was sent through the cbm-hackers mailing list
>
>
>
>
>
> --
> ------------------------------------------------------------
> Claus Just Rasmussen, BSc.EE. www.just-rasmussen.dk ------------------------------------------------------------
>
>
> Message was sent through the cbm-hackers mailing list
>
>
>
--
------------------------------------------------------------
Claus Just Rasmussen, BSc.EE.
www.just-rasmussen.dk
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