[Coco] DriveWire on EPROM ?

[Arthur Flexser]

A significant problem with replacing the internal ROM chip with an EPROM is
that the chip is soldered in. For that reason, no one to my knowledge has
bothered to explore putting enhancements in that chip rather than in the
disk controller one.  The internal chip does have enough free space for
substantial additional code.  The Mugateers image that appears when you
press control-alt-reset takes 6K in itself and could be replaced by code.

However, you'd have to write some specialized routines to make use of such
code, whereas putting it in the disk controller uses the bootup sequence
already built into Basic.

Art

On Mon, Jan 18, 2016 at 3:13 PM, Jason M <oleribus at gmail.com> wrote:

> Is there a way to load HDB-DOS or DW3DOS from the EPROM on the main board ?
> Which I believe is a 32K chip. The rom images I'm finding look like they
> are 8K and are for a Disk Controler EPROM ?
>
> Thanks,
> JasonM
>
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