One of my interests as a teenager was hacking games to make them easier. I recently came across some notes I made on some of the cheats that I found.
I appologise for any errors in the information below. The cheats have been extracted from scrawled notes I made back in the 80s, and not tested recently.
Mr Wimpy
The number of lives is set here:
&5DC9: LDA #&04 &59CB: STA &630
The number of lives is decreased here:
&4442: DEC &630
Jet Pack
The start address for running the code is:
&5900
The number of lives is set here:
&307A: LDA #5 &307C: STA &88
The number of baddies on screen 2 is set here:
&344B : LDA #5
Castle Quest
The start address for running the code is:
&4340
The number of lives is set here:
&5996: LDA #? &5998: STA &46
The number of lives is decreased here:
&58E9: DEC &46 (or is this &58ED)?
To eliminate all monsters from the game, remove the JSR and destination address from:
&4523: JSR xxxx
and replace with:
&4523: NOP NOP NOP
Planetoid
The start address for running the code is:
&1100
The initial number of lives / smart bombs is set here:
&276A: LDA #3 (Note: this value may be BCD).
Jest Set Willy (?)
Partial disassembly:
&5573: LDA #&68 - Initial Y coordinate &5575: STA &A24 &5578: LDA #&A8 - Initial X coordinate &557A: STA &A1B &557D: LDA #&12 - Initial room &557F: STA &55
Demon Decorator
To list the code:
*LOAD at &0E00
RENUMBER and remove lines 20, 100, 330, 850, 1310, 50
Cybertron Mission
For infinite lives:
- Load part 1
- Find the line that starts “*RUN…” and change to “*LOAD…”.
- Run the program.
- Whern part 2 has loaded, type ?&261E = &EA<Return>
- Call &4F80
All Wrong 