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- Short: patch Cybercon III for WB 2.0
-
-
- NAME:
- CyberconFix
-
- DESCRIPTION:
- The virtual-reality game Cybercon III does not work under
- KickStart 2.04, but CyberconFix patches the Cybercon III
- disk so that it will work under 2.04 (it should also still
- work under 1.3, but I haven't tested it).
-
- USAGE:
- Just follow these simple steps:
- 1. make a copy of your original Cybercon III disk with some disk-
- copier.
- Note: The DiskCopy program that came with your Amiga will crash
- at the end of the copy, because Cybercon is not a regular Amiga
- DOS disk. Therefore, if you can, use another disk-copier.
- 2. stick the COPY of Cybercon III into DF0:.
- 3. type CyberconFix at the CLI prompt. The disk drive light will
- go on for about a second.
- Note: Before you type in CyberconFix, Make sure the disk is
- write enabled. If it's not, CyberconFix will NOT give you an
- error message, and the patch will NOT be applied. But you knew
- that :-).
- 4. give your Amiga the 3 finger salute (reset), and enjoy
- Cybercon III.
-
- IF-IT-STILL-DOESN'T-WORK:
- It is possible that different revisions of Cybercon were released.
- If that is the case, CyberconFix will most likely fail :-(.
-
- IN-CASE-YOU'RE-WONDERING-HOW-IT-WORKS:
- After spending a few hours with a debugger, I found that there
- is a small bug in the keyboard reading routines. The problem
- hadn't showed itself under 1.3, only under 2.0, because of the
- way 2.0 allocates the CIA chips. (The CIA chips, also known as
- the 8520, are involved in reading the keyboard.) The actual fix
- turned out to be quite simple; the argument to a branch instruction
- had to be changed. The location of this change is at block 149,
- offset 159. The value of $36 at this location had to be changed
- to $2C.
-
- DISCLAIMER:
- If your computer blows up, or any other tragedy happens as a result
- of using CyberconFix, I will not be responsible.
-
- AUTHOR:
- My name is Blaise Tarr, and I can be reached on the Internet until
- at least December 1992. Here is my e-mail address: tarr@cs.psu.edu
- If you have any problems with CyberconFix, let me know.
-