pieces of metal and plastic

From: PG Manney <manney_at_nwohio.nwohio.com>
Date: Wed Jun 25 16:28:48 1997

> > > Remember it? If it's what I am thinking of, I was doing it a couple
> > > weeks ago. You are talking about a 'Coconut', right (explanation of
> > > codename also on request - it has _nothing_ to do with the Tandy
> > > Nowadays I do something similar. I create a GROB with the right bit
> > > patterns, use the SystemRPL 'Get' routine to remove the header, and
> > > create new objects.

No, not quite. The HP-41C used 2, 3 or 4 bytes to create the program steps.
By forcing apart the bytes and substituting new ones, new ("synthetic")
opcodes could be created.
These ranged from creating new characters to being able to access areas of
Ah, the heady days of discovery! Mother HP wouldn't officially help, but
there was plenty of behind-the-scenes help.
Received on Wed Jun 25 1997 - 16:28:48 BST

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