22 Feb
2009
22 Feb
'09
11:06 a.m.
Richard wrote:
I guess the best way to get data transferred from these systems is to
use the GPIB interface and transfer the programs out of the system and
into the internet. I wonder if the easiest would be to use a
Commodore GPIB compatable floppy drive or something.
Or over the optional RS-232 expansion (at a whopping 2400bps). I've
been experimenting with this idea for archiving 405x tapes (and Bob
Rosenbloom has offered to lend me a couple of tapes to play with) but
the major catch is that the 4051 appears to _only_ be programmable in
BASIC -- there's no PEEK/POKE or ways to call user 6800 machine code.
This wouldn't be a problem except that it's possible to protect tape
files with the "SECRET" command -- this makes a given file execute-only,
so it appears to be impossible to read the contents of the file using
BASIC commands. I'm guessing that most (if not all) commercial software
tapes are protected in such a manner, but I suppose I'll find out.
I'm looking into whether if it's possible to adapt one of the "backpack"
expansions to take EPROMs instead of MCM6832 ROMs. Anyone done this
before? Given a bit of hacking it'd then be possible to write some 6800
code to do a binary dump of the tapes, bypassing the protection mechanisms.
- Josh
..
Oh, but there is. A lot of it is on paper, not electronic, but I did
type in the winning Christmas card program. I've also written some
fractals, and started work on a map projections suite.
I'm not sure how best to get the stuff to you, though.