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- Path: sparky!uunet!comp.vuw.ac.nz!zl2tnm!toyunix!don
- Newsgroups: alt.hackers
- Subject: Re: YAFP: TRS-80 Super Graphics
- Message-ID: <1630242@zl2tnm.gen.nz>
- From: don@zl2tnm.gen.nz (Don Stokes)
- Date: 30 Aug 92 05:24:50 GMT
- Sender: news@zl2tnm.gen.nz (GNEWS Version 2.0 news poster.)
- Distribution: world
- Organization: The Wolery
- Approved: me
- Lines: 35
-
- wiml@cs.washington.edu (William Lewis) writes:
- > In article <YAMAUCHI.92Aug29141341@fox.ces.cwru.edu> yamauchi@ces.cwru.edu (Brian Yamauchi) writes:
- > >Now, you can delete your VARPTR/POKE commands, and whenever you want
- > >to display your alien invader, simply PRINT A$ at the appropriate
- > >point in the screen.
- >
- > The same trick was the standard way to run assembly language
- > programs on the ZX81/Timex-Sinclair 1000 (and others of their ilk).
- > Youd first write a program like this:
- >
- > 10 REM XXXXXXXXXXX....
- > 20 FOR I=16514 TO 16823
- > 30 INPUT A
- > 40 POKE I,A
- > 50 NEXT I
-
- Both of these techniques are better desribed as "standard practice"...
-
- The TRS-80 graphics-as-strings was known as "string packing"; games like
- Voyage of the Valkyrie used this extensively to keep the speed up.
-
- The ZX81 REM statement trick is actually documented in the manual that
- came with the machine, along with a couple of other schemes (using a string
- to hold code, or fooling the system into thinking memory ended earlier than
- it did).
-
- ObHack: telephone management by modem -- I just type "ring joe" or whatever,
- it dials the number, and if the line isn't busy it tells me when to pick up
- the phone.... (I also have it deliver messages by "voice", using an old
- Amiga 1000 as a (terrible) speech synthesiser... 8-)
-
- --
- Don Stokes, ZL2TNM (DS555) don@zl2tnm.gen.nz (home)
- Network Manager, Computing Services Centre don@vuw.ac.nz (work)
- Victoria University of Wellington, New Zealand +64-4-495-5052
-