pub fn parse_source(
    register: u8,
    source: u16,
    data: &[u8]
) -> Result<(Operand, &[u8])>
Expand description

Parses a source operand from an input stream. This is only used for AS modes where the source operand is stored as an additional word of data. Otherwise the source operand can be fully decoded from just reading the the instruction word