[Coco] floppy disk controller question for those that still use them

[Gene Heskett]

On Wednesday 27 January 2010, Bob Devries wrote:
>Hi, Gene,
>
>don't shoot me for saying this, but.....
>
>I'd assume that you are using the stock rb1773 driver on that disk, and not
>the no-halt one?

I tried both.  Same failure.

>Have you noticed any problems reading disks in Disk BASIC (yeah, yeah, I
>know.... I should wash my mouth).

Yeah.  But after I'd taken everything apart and put it back together a few 
times, its all working again, I think.  One oddity I tried to check out with 
a couple of lines of code in my newest joydrv_6551L.sb which tries to read 
and display in the boot trace, the state of the slot selector in the MPI, 
which I'd think would be a $33 after a reset.  But its finding a $1D!

But yeah, you mentioned DIsk Basic, so go warsh yur mouth out with some of 
grandma's Lye soap. ;-)  Once I'd found OS9 all those years ago, at version 
1.00.00 at the time, I never looked back.  In the ensuing 20+ years, I've 
only used it as a hardware troubleshooting tool, and rarely at that.

>Regards, Bob Devries
>
>--
>Besides a mathematical inclination, an exceptionally good mastery of one's
>native tongue is the most vital asset of a competent programmer.
>
>Edsger W.Dijkstra, 18 June 1975
>
>----- Original Message -----
>From: "Gene Heskett" <gene.heskett at verizon.net>
>To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>Sent: Thursday, January 28, 2010 6:16 AM
>Subject: [Coco] floppy disk controller question for those that still use
>them
>
>> Greetings all;
>>
>> I have developed an odd problem and in my attempts to trouble-shoot it, I
>> have found that one of my floppy controllers, a shack 3029, actually has
>> a Fujitsu MB8877A fdc chip in it.
>>
>> I can boot my nitros9 system from any controller in slot 3 that actually
>> has
>> the DOS command in its eprom.
>>
>> If I boot from an SC-II and go thru what it takes to restore floppy
>> access, a
>> dir /d0 works just fine.
>>
>> But if I boot that exact disk using the shack 3029 controller, the disk
>> is "wrong type".
>>
>> Is this a known incompatibility between the WD1773 in the SC-II and the
>> MB8877A in the 26-3029?
>>
>>
>> Think honk if you're a telepath.
>>
>> --
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>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
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>


-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

To get back on your feet, miss two car payments.