[Coco] DriveWire on EPROM ?

[Jason M]

perhaps I'm not using the right terms ... my chip is removable ... the chip
that was in there had a custom image that my company had developed back in
the day ...

a co-worker used his old EPROM writer to put color basic 2 image on a
M27C256B chip, I popped it in the coco and it booted right up ... that was
a 32K rom.

On Mon, Jan 18, 2016 at 3:38 PM, Arthur Flexser <flexser at fiu.edu> wrote:

> 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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