Re: Zork on the PET at last!

From: Larry Anderson (
Date: 2002-10-01 02:05:17

Congratulations!  I remember Zork only available for the Apple, TRS-80
and Atari and all the nice write ups in BYTE.  Though even after I got
it on the 64, I never got past that blocked mine tunnel.

BTW 4.0 PETs do some nasty things to cassette buffer #2, don't believe
it will stay just as you leave it..

Ethan Dicks wrote:
> I finally verified a ancient project of mine... porting Zork to
> the PET. I started 15 years ago by beginning to disassemble the
> 6K game engine that's on track zero of the C-64 Zork floppy.

15 years... Now I don't feel so bad about leaving my Light Cycles game
for about 10 or Flash Attack projects just as long.  Though I think
programming on the 8-bits is gaining popularity again...


> The BASIC 4.0 version is still wonky - I still have a bug that is
> probably caused by my accidentally using a zero page or other low
> memory location on 80-col BASIC 4.0 PETs.  The game starts, but
> you can only navigate around the rooms; you can't pick anything
> up.  I've tried to not use any locations that are critical to
> the Kernal and especially to $FFD2, but I must have missed one.
> The ZIP uses a lot of zero-page which is why you have to power
> the machine down after playing a session, even on the C-64.  They
> trash low memory and don't provide any way of restoring it.

01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101
   Larry Anderson - Sysop of Silicon Realms BBS  (209) 754-1363 
300-14.4k bps
       Set your 8-bit C= rigs to sail for
01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011

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