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From: graeme@zen.UUCP (Graeme Cawsey)
Newsgroups: comp.sys.hp
Subject: HP-28C questions
Message-ID: <707@zen.UUCP>
Date: Thu, 29-Oct-87 13:15:09 EST
Article-I.D.: zen.707
Posted: Thu Oct 29 13:15:09 1987
Date-Received: Wed, 4-Nov-87 04:45:33 EST
Organization: Zengrange Limited, Leeds, England
Lines: 45
Keywords: HP-28C


Whilst we are on the subject of the 28C, I have a couple of
questions that maybe someone (Corvallis?) can answer.

1.	What does opcode 80810 do on the new Saturn processor?

2.	HP-Journal (August issue I think) states that there are
	17 objects defined so far for RPL; I count 19 object
	prologs.  Here is my list, perhaps you can correct / fill
	in the missing bits.

	Prolog
	Address	Object
	-------	----------------------------------
	02911	Short integer (5 nibs)
	02933	Real (16 nibs)
	02955	Extended Real (21 nibs)
	02977	Complex (32 nibs)
	0299D	Extended Complex (42 nibs)
      ?	029BF	Byte (2 nibs)  
      ?	029E1	
	02A0A	Array 
      ?	02A2C
	02A4E	String
	02A70	Long integer
	02A96	List
      ?	02AB8	ROM/RAM pair
	02ADA	Algebra
	02C67	'Program' (new thread)
	02C96	Assembly code
	02D12	Global name
	02D37	Local name
      ?	02D5C	ROM pointer (11 nibs)

3.	In the 'lex' file header (to use 71 terminology) what is
	the last 5 nibbles supposed to be used for.  Its a bit
	difficult to work out since all of the internal files
	have them set to zero.  Are they an offset to a poll
	handler?


Graeme Cawsey		[ graeme@zen.uucp  - !mcvax!zen.co.uk!graeme ]
Zengrange Ltd.		[ Tel: +44 532 489048 x226 ]

(If I was paid for my opinions I wouldn't be the pauper that I am!)