[Coco] DriveWire

[Robert Gault]

Darren A wrote:

> On 3/6/09, Robert Gault wrote:

>> Here is the ml code that moves the ROM. Any reason why this

>> shouldn't work?

>>

>>   org $7000

>> start orcc #$50

>>   ldx #$3000    where the ROM was offset loaded

>>   ldy #$c000

>> a@ ldd ,x++

>>   std ,y++

>>   cmpx #$e000

>>   blo a@

>>   jmp $c002

>>   end start

> ---

> 

> There is a problem with that routine.  The  CMPX #$e000  should be

> CMPX #$5000  (or CMPY #$e000).

> 

> Darren

> 


Duh, hits head, how obvious. Thanks Darren.

Now the ROM boots and runs. I can test or use it without burning an 
EPROM which means I can have both a hardware scsi system or a drivewire 
system without changing ROMs.