I'd never played Star Force before but was asked by someone for a freeplay / high score save kit. A few hours of quality Z80 programming time later and it looks to be working.
I know @edwoodjnr did an excellent freeplay mod back some years ago using the encrypted code, this one uses the unencrypted code and runs on one of my standard Z80 high score save boards so you can either remove the existing game EPROMs or just leave them in place.
Interesting fact - whilst the code appears to do a ROM check on bootup, it doesn't actually check the contents of the ROMs and it will always say they are ok
Features:-
- freeplay (maintaining attract mode) selected by an unused DIP switch
- displays "PRESS START" on the screen (instead of in coined mode where it tells you to insert coin and what the coinage setting is)
- uses the existing 10 position high score table but saves scores and initials to serial EEPROM (albeit with a couple of name changes)
- default the high score table by holding P1 UP on power-up
- no fancy menu to negotiate and no website text shown on the screen
I know @edwoodjnr did an excellent freeplay mod back some years ago using the encrypted code, this one uses the unencrypted code and runs on one of my standard Z80 high score save boards so you can either remove the existing game EPROMs or just leave them in place.
Interesting fact - whilst the code appears to do a ROM check on bootup, it doesn't actually check the contents of the ROMs and it will always say they are ok
Features:-
- freeplay (maintaining attract mode) selected by an unused DIP switch
- displays "PRESS START" on the screen (instead of in coined mode where it tells you to insert coin and what the coinage setting is)
- uses the existing 10 position high score table but saves scores and initials to serial EEPROM (albeit with a couple of name changes
)- default the high score table by holding P1 UP on power-up
- no fancy menu to negotiate and no website text shown on the screen
