BIOS

For hardware talk only (please avoid ROM dumper stuff)
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Ced2911
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BIOS

Post by Ced2911 » Fri Apr 17, 2015 9:07 am

Hi I'm new on the genny community.
I would like to know if someone have looked at the bios(tmss?), and tried to replace it ?
I have read on smspower.org that some people made did some hack for the master system, is it possible to do the same in the megadrive ?
In the documents i've found none of them talk about the bios storage ?
Is it stored in a rom ?

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TmEE co.(TM)
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Post by TmEE co.(TM) » Fri Apr 17, 2015 11:02 am

The TMSS ROM lives inside a gate array or an ASIC, there are means to bypass it and then add an external chip that does your own thing but it is more trouble than it's worth.
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Ced2911
Newbie
Posts: 5
Joined: Tue Apr 14, 2015 8:15 am
Location: France

Post by Ced2911 » Fri Apr 17, 2015 12:49 pm

Something like that can be made using the expansion port ? using it as a "hidden" cart port ?

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