Dwedit wrote:
Hacking fantasy zone is ridiculously easy, since it bankswitches by reading a byte from a table, then writing that back to ROM in the same address. They clearly had bus conflicts in mind here.
Just change the table (located at 1CC85 in the file) from 01 11 21 31 41 51 61 71 to 00 01 02 03 04 05 06 07, and change the mapper to 2 (UNROM). Set mirroring to horizontal.
awesome! I hex edited the new string in but I don't know how to go about changing the mapper to mapper2(unrom). Is that just something I have to change in the header or is there other code in the actual binary that needs to be changed? If you could please let me know what value to change in the header also I would be very greatful.
EDIT: I found out and edited the header thanks so much for your help. If I only knew how to make a IPS patch I would post it for everyone. but I suppose this thread now has all the needed info anyhow.