User:Zzo38/Mapper F
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Registers
Registers are mapped at $5800-$5FFF, using the low four bits as a register number. There may be different registers for reading as for writing.
$5800 (W)
[.... ....]
$5800 (R)
This register is a 8-bit ADC for the 2A03+microphone audio. Filter and mute and expansion audio are not applied; it is the same audio signal as cartridge is receiving at first.
