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From: ervin@pinbot.enet.dec.com (Joseph James Ervin)
Newsgroups: comp.sys.handhelds
Subject: 48sx machine language programming
Message-ID: <20073@shlump.nac.dec.com>
Date: 11 Feb 91 19:02:32 GMT
Sender: newsdaemon@shlump.nac.dec.com
Reply-To: ervin@pinbot.enet.dec.com (Joseph James Ervin)
Organization: Digital Equipment Corporation
Lines: 48

Hi all,

I am gearing up to try some 48sx machine language coding.  I have
seen some impressive examples in this newsgroup, including
TETRIS and the various contributions from Dr. Wickes.  I have
collected various articles from this newsgroup which list 
internal addresses and data types, but I feel that I still lack
a good deal of background regarding the processor architecture 
as well as the hardware architecture of the 48sx.  I suspect that
most of the ML heavies reading this newsgroup have accumulated 
their knowledge in bits and pieces through hard work and 
perserverence over the years and across several HP machines.  If you are 
one of these people, then please share pointers to the documents that
you found to be most helpful.

I ask for advice.  Where should I begin?   I have a slightly garbled
copy of some 48sx notes by alonzo [last_name].  (If anyone has a good
copy of these notes, could you please forward to me?).  I also have notes
by Derek, but these seem to be written for the more seasoned ML 
programmer.  I missed out on the earlier machines which used the 
Saturn processor, so much of the experience gained by people using
those machines is rather lost to me.

Is there some more formal documentation available that could get me
started?

Also, regarding assemblers, I have seen references to the Star assembler.
This sounds like a nice piece of work.  Has anyone got it to run on a
VAX/VMS system?  Does the documentation for this assembler (or the
SASS assembler) provide any further insight into the machine?

Also, I have seen references to book(s) called HP-48 Insight.  Should
I wait for these to come out, or are these unlikely to contain the information
I require?

I appologize for my shotgun approach to asking these questions.  They have
been accumulating for a while, and I wanted to give the literature I already
have a good once-over before using up bandwidth here.

Can anyone out there provide answers to any of these questions?

Regards,

>>>Joe Ervin   - Digital Equipment Corporation

My views are my own, and not those of my employer.

ervin@pinbot.enet.dec.com