Subject: Re: Oooooh... IDE to Q-bus/Unibus adapters.
To: Peter C. Wallace <pcw@mesanet.com>
From: emanuel stiebler <emu@ecubics.com>
List: port-vax
Date: 07/09/1999 14:02:48
----- Original Message -----
From: Peter C. Wallace <pcw@mesanet.com>
To: <port-vax@netBSD.org>
Sent: Friday, July 09, 1999 12:36 PM
Subject: Re: Oooooh... IDE to Q-bus/Unibus adapters.


> I think that the IDE - QBUS DMA interface would be fairly simple
> to do with a simple FPGA or so, maybe even a big CPLD (say a Xilinx
> XC95216). Of course, you would want a boot ROM also... I forget, does the
> QBUS require 48 mA drive or will 24 do? most FPGAs only drive 24.

I wouldn't put a FPGA directly on the q-bus. I always used some drivers
between the programmable logic & the outside world.

> geting it to work is just a SMOV (Small Matter Of VHDL)

Not so small, but ok.

cheers,
emanuel