Codes have been tested but use at your own risk.

Code:
Press L to top Up time:
94000130 FDFF0000
121645B0 000003E7
D2000000 00000000
Credit: Vash for Code type Help and bug fix.

Code:
Press L to top Up Pac-Mans:
94000130 fdff0000
1216459c 00000063
d2000000 00000000
Credit: Vash thanks loads for finding the address! (The game wouldn't let me draw pac-men after I scanned the RAM)

Code:
Infinite Time:
121645B0 000003E7
(For those who don't want to have to press L all the time)

More coming soon!