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klonoa
Newbie
Joined: 23 Jun 2011
Posts: 1
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 Posted: Thu Jun 23, 2011 5:40 pm Post subject: Need help with eprom burning |
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Hey guys
I Want to make a repro cart for the sega megadrive (I already did about 10 for the snes so i'm not unfamiliar with the eprom burning stuff). I used the M27c160 (2MB) and ofcourse i first compard it with the mask rom.
After compareing the two i didn't see any diferances but when i burn pulseman,sonic3 or batman and robin but none will start(black screen).
mask rom: http://nintendoallstars.w.interia.pl/romlab/segaroms.htm
I made sure the i got a slavecart with de maskrom that is displayd in the middle of the image (by looking at pin 32 and 42)
m27c160: http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/mXrxvyv.pdf
As you can see there is no diferance.
Is there some header in the rom image that i don't know of?
(all my mega drive roms are bin files)
With the snes roms you need to delete the header when you want to burn them.
Can someone put me in the right direction? |
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TmEE co.(TM)
Very interested
Joined: 05 Dec 2006
Posts: 1944
Location: Estonia, Mahtra village
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| Posted: Thu Jun 23, 2011 7:41 pm Post subject: |
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most EPROM burning software needs byte-swapped MD ROMs.
_________________
Mida sa loed ? Nagunii aru ei saa  |
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bastien
Very interested
Joined: 25 Jun 2007
Posts: 152
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| Posted: Thu Jun 23, 2011 8:12 pm Post subject: |
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| yes, you just need a Swap byte and if you use a 27c160 they are not any redirection. |
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