4 ms·
Is there an output from the instruction decoder that indicates an instruction is doing io? or maybe one for read and one for write?
by controversial97 4y ago
Is there an output from the instruction decoder that indicates an instruction is doing io? or maybe one for read and one for write?
- kens 4y agoYes, there's an output from the Group Decode ROM that indicates the instruction is an IN or OUT instruction. This causes the M/IO line to signal an I/O operation rather than a memory operation.