5 1/4 diskettes available

Guy Dunphy guykd at optusnet.com.au
Wed Jul 10 20:36:26 CDT 2019

At 12:25 PM 10/07/2019 -0700, you wrote:
>On 7/10/19 11:32 AM, Will Cooke via cctalk wrote:
>> https://www.bgmicro.com/4-pack-of-5-25-floppy-diskettes-with-sleeves.aspx
>They have hub rings, so they are probably 360K

And the index hole. 

Thanks Will, this is quite fortuitous. I've just restored a HP 82901 dual 5.25" drive,
which now runs, responds on the HP-IB bus, but I don't yet have facility to test R/W files.
Next is to find some floppies to suit. I can't find any mention of what floppy type it uses,
but the model specs are:
  Double sided, 35 tracks/side, 16 sectors, 256 byte sectors, MFM, optical index hole sensor.
  Total capacity: Listed as 270KB, but above gives 286,720 bytes. (280KB)
So probably 360K disks would work?
I'll have a few boxes of old 360K somewhere, and digging them out was on my list for today. 

So, nice timing. Ordered about 80. No hurry, since I still don't have a suitable HP-IB card.
Looking for a couple of cards that are PCI and listed in http://www.hp9845.net/9845/projects/hpdir/

Pic of the drive here: https://www.eevblog.com/forum/chat/what-did-you-buy-today-post-your-latest-purchase!/msg2537844/#msg2537844
I also have a HP 9121 (working with my HP 1630G) and 9123 (both 3.5"), looking for a HP 9895A (8")

The origin of this project is that I have 3.5" disks with ALL the disassembler utils for the HP 1630
logic analyzer, and want to archive them to PC (and put online, with other people waiting for this.)


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