17 Jan
2008
17 Jan
'08
12:09 a.m.
From: ard at p850ug1.demon.co.uk
Hi Tony
If it worked with the TRS, it at least matched the same code and would
work in place of a WD1001. It might be, considering it used and external
board to handle the address decode.
Dwight
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Hi
I was told by Tony that the 5Meg Tandy ( Radio Shack ) drive
box had a similar controller.
FWIW, I havea 3rd party Cumana hard disk for the TRS80 Model 3/4. It
contains 4 sections :
A PSU (+5V, +12V)
A standard ST412-interface hard disk. I forget the model
A Western Digital controlelr card. I am not sure of the exact model, but
it's very simialr to a WD1001, and may be that one.
A Cumana-designed interface to the TRS-80. Just an address decoder.
The WD board has been modified by the addition of a jumper wire to bring
5V ot a normally N/C pin on the host conenctor. That's used to power the
address decoder board. AFAIK the firmware ROMs on that board (there's an
8X300-seires microcontrolelr there) are stnadard.
This think uses the standard Radio Shack drivers, etc.