Re: Examining the Monitor?

["Ernest" <leucoplast@seanet.NOSPAM.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20030828124423.22079.00000116@mb-m04.aol.com">news:20030828124423.22079.00000116@mb-m04.aol.com...
> Ernest wrote:
>
> >Is it possible to examine the code in the ROMs and find out what the
various
> >control key functions are?

> If you can find the command to display a range of memory addresses
> in hex, that's a start.  If you can find the command (L on the Apple)
> to disassemble memory, that's even better.
>
> You will have to disassemble and "reverse-engineer" enough of the
> monitor to find its command decoding so that you can document it.
>
> Just displaying the address range of the monitor in ASCII may turn
> up a table of commands, though it may not be compact, and if they
> are single-letter commands, it may not be easy to find.
>
> Another starting point is to assume (!) that the monitor for an Apple
> clone is similar to, or derived from, the Apple monitor, and using the
> Apple monitor source as a guide to the ROM, look for any changes.
> (If it is _much_ different, that should be obvious.)

Ah-ha! That's a good idea. I'm sure that I've got a copy of the Apple
Monitor source printed out around here somewhere.

Thanks!