[sebhc] H17 DRIVES

Carroll Waddell CarrollWaddell at sc.rr.com
Sat May 29 15:18:25 CDT 2004

Yes. I would be interested. I've only started working with the 
diskettes. I was going to look at the schematic of the controller, and 
the schematic for the IBM drives and see what I could do. Thanks again 
for the switches. When I started working with the H17 drive enclosure, 
the power switch was bad. This is an old 3 drive enclosure that I bought 
many years ago.
I'll pay you for whatever you want to sell.

Walter Moore wrote:

>Are you sure that the drives are properly selected?  Remember that for the
>H-17 drives, the DS select lines on the programming shunt are backwards.
>A jumper on DS3 selects device 0.  For the 96 tpi drives, it is normal (how
>did they manage that?).  I've not had any problems missing a termination
>resistor, but I may have been lucky.  Depending on how the drives are
>jumpered, the motor will come on regardless of which drive is selected.  You
>can also try register A = 1 for drive 1 and A = 2 for drive 2 to see if the
>drive is jumpered other than drive 0.
>I've got a stack of these drives here, I can send you one or two that work
>reasonable well if you need them.  I'll also look at the others if you want.
>I've manage to resurrect a lot of these drives.
>I think all my CP/M disks are soft-sectored.
>>-----Original Message-----
>>From: sebhc at sebhc.org [mailto:sebhc at sebhc.org] On Behalf Of Carroll
>>Sent: Saturday, May 29, 2004 12:41 PM
>>To: sebhc at staunch89er.com
>>Subject: [sebhc] H17 DRIVES
>>Has anyone found an H17 diskette drive for sale. I just tried the H17
>>controller board (the one without the ROM or RAM),  with XCON8. It says
>>PRI H 17 , it is trying to boot, but it doesn't. Of course one problem
>>is that I don't have a boot diskette, but I also don't have a diskette
>>drive. I had a number of old 5 1/4 drives, but none that I've tried will
>>work. It will turn on the motor when it tries to boot, but the drive is
>>not selected, the drive select light never comes on. The old IBM PC
>>drives I have do not have jumper for DS selection.  If anyone has a copy
>>of the CPM boot diskette, I sure would like to borrow it for a while.
>>(Assuming I ever get a drive.)
>>And by the way Jack, that H8 stuff did not sell. And I still have that
>>EICO amp that I built in 1968.
>>Delivered by the SEBHC Mailing List
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