[Coco] assembly file for REL_80 or a patch.

[Robert Gault]

Use "disasm -m rel" and look for the sequences:
  ldd #$1200 std $FFB0
or
  ldd #$3F00 std $FFB0
which will be near the beginning of the module. Which you see will 
depend on the type of screen you have for /term. The 80 column screen 
should be $3F00 (black on white).

You can also Save rel and then use dEd rel to find $CC1200 etc.

I'm surprised you have black on green as that is not in the source for 
an 80 column screen.

Whatever you have, the code is LDD #$bbff where the msb is background 
and the lsb is foreground. Decide your easiest sequence for testing. For 
example, you could save rel to disk, make a change, verify the module, 
and then os9gen a new disk. Or, you could save rel, make the change and 
verify to get the new values for the CRC. Then used dEd /d0@ and make 
the changes on track 34. Then you won't need to os9gen a new disk.

Paul T. Barton wrote:
> Help,
> 
> I just want to change the colors on screen fron green/black to
> blue background ($09?) w/ white letters ($3F?) in rel_80.
> Where are those bytes, please?
> 
> ( I have an older version of rel.asm but it won't assemble. )
> ( It wants D.MD??? something not in os9defs. )
> 
> Paul - idezilla
> 
> 
> 
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