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Modem Cartridge
LuigiBlood edited this page Jul 20, 2020
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6 revisions
The ROM is 4MB, it contains a header, as well as three different ELF library files at 0x40, 0x100000 and 0x200000.
The ROM is mapped at 0x18000000.
0x0FFD0000 - For DMAs?
0x0FFD00C0 - Main Register Control
bit17 - IM
bit19-21 - IF
bit22 - RE (Seize Relay, connect?)
bit24 - RI (Ring Indicator?)
bit26 - PD (Pulse Dial?)
bit27 - RS