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From: bmaraldo@watdcsu.waterloo.edu (Commander Brett Maraldo)
Newsgroups: comp.sys.hp
Subject: Re: System Programming on the HP28C (A Question)
Message-ID: <4045@watdcsu.waterloo.edu>
Date: Sat, 31-Oct-87 01:49:31 EST
Article-I.D.: watdcsu.4045
Posted: Sat Oct 31 01:49:31 1987
Date-Received: Thu, 5-Nov-87 06:46:57 EST
References: <3970@watdcsu.waterloo.edu> <703@zen.UUCP>
Reply-To: bmaraldo@watdcsu.waterloo.edu (Commander Brett Maraldo)
Distribution: comp
Organization: Unit 36 Research
Lines: 28

In article <703@zen.UUCP> graeme@zen.UUCP (Graeme Cawsey) writes:
> 
> SYSEVAL evalutes an object at an address passed on the stack,
> i.e. it starts the threaded interpreter running at that address.
> There are a few useful addresses that are commonly known -
> accessing the timer, type checking stack arguments etc.
> Now, if you want a copy of the 28C
> operating system totally disassembled (I've only managed to
> comment little bits of it so far - well it is pretty big), and
> you want to pay the phone bill to transfer it (over 2Mbytes) then

    Where can I get more information on these topics?  I really don't want
    to join the HP club in England as the pound is too expensive and the
    mail service stinks.  I am interested in information on memory upgrades
    (yes, it evidently can be done up to 32k) and system programming
    (machine code, assembly language, the operating system, a C compiler
    :-).  Any addresses or other contacts in North America would be
    appreciated, Thanks.


					Brett L Maraldo
  

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