nesdev.org

Hello!
Please can you help me figure out how can i double up the size of this game in order to burn in on a 27C160?
The game size's about 64Kb (it's the Super Mario Bros Maitrus 2010 version) but i only have 1MB 27C160 eproms..

I usually do that with snes carts among with Lunar Expand.
I have tryed the same with this genesis game but it wont work..

Weird thing is that i have tryed first on mine emulator, correct the checksum, and the game was working fine..

Bad thing is that i have 40-42 pin eeprom with that size (64Kb, 128Kb,512Kb) but the pinout of these are totally messed up compared to the mask roms, they also miss pins like A18/A19 wich i think they are necessary.

How can i fill up this rom?
I got a willem programmer

Thank you for your help!
Manuele

Is it linear and headerless (.bin or .gen) or interleaved and with a copier header (.smd)? If headerless, you can just go to Command Prompt and

No MD game relies on mirroring, you can only program the first bit of the chip with the ROM and it will work. There's no need to double+ the image size (unless your burning tool is kinda limited)