NetNews Usenet Archive 1992 #27/NN_1992_27.iso/spool/comp/sys/hp48/5916

Internet Message Format | 1992-11-24 | 1.6 KB

Path: sparky!uunet!wupost!waikato.ac.nz!comp.vuw.ac.nz!am.dsir.govt.nz!grv!SRGPJLT
Newsgroups: comp.sys.hp48
Subject: Unused space in DEMO ROM?
Message-ID: <[e-mail]>
From: srgpjlt@grv
Date: Tue, 24 Nov 92 01:07:33 GMT
Reply-To: srgpjlt@grv
Sender: [e-mail]
Organization: DSIR, Lower Hutt, New Zealand.
Lines: 26

From: (James Downes, see below)
Subj: Unused ROM in DEMO card?


      I'm new at this (holiday job!) but!
When I bought my 48 (~1 year ago) they left the demo card installed
by mistake.I thought the card would be free to the shop for sales etc
so I kept it, anyway I thought it would be useful to keep people that
are forever asking "what does it do?" happy!
Anyway when I started messing with sys-rpl I got curious as to what the
rest of the DEMO card ROM contained (DEMO is library 262 ~105Kb and ROM
will be std 128Kb).I 'viewed' the ROM by pointing the display chip to
the approprite area (5 nib pointer at #120h) ( objects such as GROBs
arrays etc can be seen easily). The obvious object I came across was a
131x131 GROB of what appears to be a fractal! (if same ROM as mine
(can't see any ver no.) and installed in port 2 #FE813h SYSEVAL will
place GROB on stack.) There appears to be other stuff 'lying around' but
this is the end of my skills at pulling bits out of ROM, is there any
one that has a DEMO and greater skills that can tell me what the rest is?

thanks!
James

PS:If this has been covered before sorry! I only see the net in the holidays!
   Also the above address is borrowed ie. PLEASE post to news group not me.
PPS: Don't blame me if above SYSEVAL resets your mem , it works for me!!