HP 86(A) disk interface specification

[zippysticks]

Hi folks,

does anyone have the interface specification or pinout of the disk interface on the HP-86a please ?

Note - its not the same as the HP-IB connectors on the 86B - the 86a has Centronics style connectors that (AFAIK) could only be used with the 9130a drives.

Thanks

 

[krebizfan]

The pinout is shown in the service manual for the HP 9130K on page 2-2.

The manual is available at HP Computer Museum Australia (the one with the URL ending in NET).

Also, see https://torlus.com/floppy/forum/viewtopic.php?t=2729&start=15 which covers some efforts to use a standard floppy drive with the 86a.