[Coco] OS-9 Level I v2.0 hard disk image how-to?

Robert "Exile In Paradise" Murphey exile at weylan-yutani.com
Fri Oct 21 16:43:55 EDT 2022


On Sat, 2022-10-08 at 18:54 -0500, rick ulland via Coco wrote:
> 
> What are the old RS system?

I've been digging to try to find out.


26-3145 Hard Drive Controller
26-4155 15-mb primary hard drive 1984 @ $2495
26-4171 35-mb primary hard drive 1985 @ $2995
https://www.vintagecomputer.net/fjkraan/comp/trs80m2/m2FamilyPartNumberList.html


> The devpak drivers have 0% docs.
> It does 'something' when you give it tracks and cyls...
> the controller is in the drive. Very IDE ish.


26-3145 Color Computer Hard Disk Interface goes to a WD1000-TB1
controller board with a 50 pin interface, possibly SASI.

The ST-506/ST-412 (MFM/RLL) interface protocol.

The 15MB is described as a Tandon TM503
The 35MB is described as a Quantum Q540

https://vintagecomputer.net/tandy/mfm_mirror.html


> Are they um, emulated in an emulator? 

Not that I have found.

-- 
Robert "Exile In Paradise" Murphey <exile at weylan-yutani.com>
Weylan-Yutani Corporation



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