On Thu, 2008-02-28 at 04:41 -0500, Sridhar Ayengar wrote:
Gordon JC Pearce wrote:
Exactly. Simply grafting a PATA interface onto a
QBus card is trivial.
Actually getting something that will either pretend to be an existing
controller or writing a device driver for the operating system in use is
much much harder.
If you really wanted to push this forwards, write me some MSCP
controller firmware for an Atmel microcontroller...
I have the skillset to do this. What I don't have is the documentation
that would allow me to figure out how to talk MSCP and bit-bang Qbus.
If someone could point me in the right direction for the specs for
these, I'd be happy to write the firmware.
Actually any controller that would be easier to write firmware for would
be good. It would be trivial to carve up the card into multiple logical
units.
You could have, for example, four RL02s each capable of being assigned a
"pack" from the card.
What were the biggest non-MSCP-attached drives? How hard would they be
to emulate?
Gordon