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Implements MSX interrupt/data request reading register.

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The disk ROM now appears to accept on-disk bytes, but still announces an IO failure.
This commit is contained in:
Thomas Harte 2018-01-07 20:28:34 -05:00
parent 2f59226300
commit 8be6cb827b
1 changed files with 3 additions and 0 deletions
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3
Machines/MSX/DiskROM.cpp
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@ -44,6 +44,9 @@ uint8_t DiskROM::read(uint16_t address) {
if(address >= 0x7ff8 && address < 0x7ffc) {
return get_register(address);
}
if(address == 0x7fff) {
return (get_data_request_line() ? 0x00 : 0x80) | (get_interrupt_request_line() ? 0x00 : 0x40);
}
return rom_[address & 0x3fff];
}