HP test board?

[Tony Duell]

> 
> Bob,
> 
>    I know that you and Steve were working on writing some software for the
> 9885. If you can use this to help figure out the pin out or operation of
> the 9885s you're welcome to it for a indefinite loan.

It may not be a lot of use for that. I've not seriously looked inside the 
9885 yet (a future project, thanks for prompting me...), but it would 
appwar that the lonk between the master and slave drive units -- the DC37 
connecotrs -- is somewhat like a Shugart drive interface (low-level disk 
drive contorl sigals). The master drive contains the controller (4 or 5 
PCBs from what I remember) and links to the host using a 16 bit parallel 
interface.

There would seem to be little point in using the slave drives on their 
own -- any normal 8" drive would do as well. And if you're going to be 
using the master, you'll be talking to the higher-level interface, on the 
DD50 connector.

-tony