Time Soldiers with hack won't load on Everdrive MD

I've hacked Time Soldiers for Sega Master System. This rom works fine on emulation but won't work on Everdrive MD. I get black screen when game tries to load.

Standard rom on Everdrive MD works ok.

cksum showes different CRC between files:

1-hacked file
cksum ts-life.sms
1407249721 262656 ts-life.sms

2-original file
cksum Time_Soldiers_\(UE\)_\[\!\].sms
79310608 262656 Time_Soldiers_(UE)_[!].sms

Only change between files is in one or two places making D6 (sub)tract use 00 vs. 01 in original file.

Any idea on how to fix?


thanks

 

Just because it works on an emulator does not mean it will work on the actual system.

 

Maybe try posting in the Official "game doesn't work" Thread.

 

ok its now fixed. I used two great tools

SMS Checker 0.81 to fix and rename the original rom file, this fixed the checksum and cleaned up the file quite a bit, no more offsets to find the right sections. Type = Good dump now.

I then used SMS/GG rom header viewer and all looked good.

I re-made my changes (01 to 00) in the hex editor to:
634d
6403
5988
560a
56ee
59e8
5a87

top two codes are to sub)tract) zero lives when player is killed. Bottom 4 are to for unlimited weapon use. Only works so so if you pickup rocket or (P)ower circle thing.

Saved file.

Used SMS/GG rom header viewer to calculate new checksum, now CE89, used hex editor to correct checksum at 7ffa, i.e. 89 CE (little endian order).

Re-Saved file and loaded onto Everdrive MD (Genesis) and all works.

thanks

 

Cool man , thanks for sharing the solution.