[Coco] HDB-DOS eprom in a floppy controller

[Bill Pierce]

Henry, the HDBDOS ROM is close to 99% compatible with RSDOS. You put the HDBDOS rom in the disk controller. You will have full drive access. That's the way I ran mine up until we traded. In fact, you can run it that way with no floppy drives attatched... I did.

Bill P.


-----Original Message-----
From: rietveld rietveld <rietveldh at hotmail.com>
To: Coco mailing list ​ <coco at maltedmedia.com>
Sent: Sun, Dec 20, 2020 9:32 am
Subject: [Coco] HDB-DOS eprom in a floppy controller

If I have a 24 pin eprom burned, with HDB-DOS LBA for the Glenside controller, will the fd500 controller still work as a normal disk controller?

I have a Glenside with 2 headers soldered on it. When i plug in a standard disk controller and boot HDB-DOS from floppy the Glenside boots up as expected but when I DRIVE OFF to use the physical disk 0 it just hangs.  I am guessing that the RSDOS in the controller is conflicting with the HDB-DOS i am loading from disk.

I was hoping that if I put HDB-DOS in the floppy controller that it would auto boot the hard drive while still allowing physical disk use with the DRIVE OFF command.

Will this work?



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