Re: 8250LP problems

From: William Levak (wlevak_at_sdf.lonestar.org)
Date: 2006-11-26 06:42:19

On Sat, 25 Nov 2006, Spiro Trikaliotis wrote:

> Date: Sat, 25 Nov 2006 19:34:42 +0100
> From: Spiro Trikaliotis <ml-cbmhackers@trikaliotis.net>
> Reply-To: cbm-hackers@ling.gu.se
> To: cbm-hackers mailing list <cbm-hackers@ling.gu.se>
> Subject: 8250LP problems
> 
> Hello,
>
> I have some problems with a 8250LP, connected to a C128Dcr via IEC2IEEE
> (http://www.nlq.de/)
>
> The floppy reacts to a reset of the C128Dcr. I can read the status
> (73,CBM DOS V2.7,00,00,0). Anyway, if I enter LOAD  "$0",11 (the drive
> is #11), I only get "SEARCHING FOR $0", and the machine hangs there.
>
> This is independant of weather there is a disc in the drive or not;
> using drive 1 (that is, LOAD "$1",11), the same occurs. Additionally,
> the drive does not start to spin.
>
> I tried to format a disc (using OPEN 1,11,15,"N0:TEST,13"). With this,
> the drive starts spinning, but I cannot hear the R/W head move.

Try "CLOSE 1" first.  The command above is correct.

> For of all: Is this commend for formatting correct? (I did not find a
> manual about the 8250LP). Additionally, does anyone have an idea of what
> could be wrong with the drive?

Sometimes Commodore drives "hang-up" if the head is too for out.
A block read command to track 0 usually works.  If not, you may have to 
open the drive, and move the head manually to free it up.

Bill


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