15 Aug
2013
15 Aug
'13
7:18 a.m.
That's my site :)
Nico, there is a card cage in the back of my drives; The connections
to the drive are shown in this manual
http://p800.wikispaces.com/file/view/x1215_vol3.pdf/347233458/x1215_vol3.pdf
on my website (page 3-4), There's an 8-bit (X1215) or 9-bit (X1216)
address/command bus that is used in conjunction with three lines (Head
Select, Cylinder Select, Command) to send commands to the drive.
Camiel.
On Thu, Aug 15, 2013 at 3:09 PM, Al Kossow <aek at bitsavers.org> wrote:
On 8/15/13 3:26 AM, Nico de Jong wrote:
Hi all
Would anyone know where I can find a IBM 5440 diskdrive, or even better :
a Philips 6875? They both use IBM 5444 cassettes, although with a different
number of segments per track
Nico
There were many, many companies that made OEM 5440-style disk drives, most
had slightly incompatible
interfaces or cabling from each other. Are you sure what you are looking for
are real IBM drives?
Looking at the X121x drive service manuals at
http://p800.wikispaces.com/Docs those drives are clearly European
designs at quite unlike IBMs (TTL logic and different head positioning
technology). The 2.5 vs 5 Mb difference
will be 200 vs 400 tracks.