[Coco] Custom CoCo 3 ROM

[coco at jechar.ca]

On 2020-11-20 11:02, Bruce W. Calkins wrote:
> On 11/20/20 10:52 AM, tim lindner wrote:
>> On Fri, Nov 20, 2020 at 7:34 AM <coco at jechar.ca> wrote:
>>> I have a Coco whose 32K ROM is replaced by a Boot to Drivewire
>>> ROM that only works to boot OS-9 from a drivewire server wondering
>>> if there is a physical switch to allow one to switch between
>>> two 32K ROMs so the original that has just bin sitting in a drawer
>>> for years could be switched in to let me run COCO BASIC tape programs
>>> and use game cartridges and Disk Basic.
>> 
>> Maybe someone has a custom coco 3 rom that includes the default
>> ability to DW Boot into OS-9?
>> 
>> If you hold a key down, you get BASIC.
>> 
>> Then you would not have to have a custom board made. All you would
>> need to to reprogram the EEPROM you already have.
>> 
> A more elegant solution, but someone do have to understand enough
> assembly language to do it.
> 
> Bruce W.

That would be better.