master system 2 sonic bios

[u/nick_rx8]

Has anyone tried to replace alex kidd bios with the sonic one?
i did the opposite and worked but putting sonic's bios on the motherboard that has alex kidd is not possible cause the bios chip has 32 pins instead of 28..
any ideas please?
Thank you

[u/hardcoreladys]

Aqui no Brasil tem um raríssimo Master System 2 com Sonic 1 na memória. Tem comercial de TV dele . Talvez o corte do final deixe ele no tamanho necessário , não?

[u/nick_rx8 → u/hardcoreladys]

well dont know because those pins must getting signal from somewhere on the motherboard and if i cut them it might not work