IM 0

Operation

Set Interrupt Mode 0

Mnemonic

IM

Operands

0

b7b6b5b4b3b2b1b0
1 1 1 0 1 1 0 1$ED
0 1 0 0 0 1 1 0$46

Description

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.

Condition Bits Affected

None.