Re: [CommodoreOne] Help needed

From: Marko Mäkelä (
Date: 2001-09-04 14:34:43

On Tue, 4 Sep 2001, Ruud Baltissen wrote:

> > What if not all the processor lines are connected, so you can only process
> > one bit at a time?  The algorithms people are suggesting won't necessarily
> > work in this case.
> Did I miss something? What have processor lines to do with these algorithms?

I know of only one 6502 program that works with narrower than 8-bit
memory.  It's the "dadb" test program (distributed with FrodoSC) that I
wrote.  The program executes in the color memory and changes the middle of
the screen to black (or was it white) if the space bar is being pressed.
It took me two weeks to write that program.  The name of the program comes
from the fact that the stack was filled with $da, and the graphics memory
was arranged so that the program would fetch an RTS instruction from $dadb
most of the time.

> > Is there way to assemble code directly to the drive?
> What do you mean with this?

Will there be M-W and M-E commands, or the less documented & (ampersand)  
command (which will read and execute a USR file from the floppy)?  I guess


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