Set Interrupt Mode 0
IM
0
| b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 | |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | $ED |
| 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | $46 |
The IM 0 instruction sets Interrupt Mode 0. In this mode, the interrupting device can insert any instruction on the data bus for execution by the CPU. The first byte of a multi-byte instruction is read during the interrupt acknowledge cycle. Subsequent bytes are read in by a normal memory read sequence.
None.