ZiLOG Z80380 User Manual page 97

Z
ILOG
IM p p = 0, 1, 2, 3
SR(4-3) ← p
Operation:
The interrupt mode of operation is set to one of four modes. (See Chapter 6 for a description
of the various modes for responding to interrupts). The current interrupt mode can be read
from the Select Register (SR).
Flags: S: Unaffected
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Addressing
Mode Syntax
IM p
Field Encodings: pp: 00 for Mode 0, 01 for Mode 3, 10 for Mode 1, 11 for Mode 2
DC-8297-03
Instruction Format
11101101 010pp110
INTERRUPT MODE SELECT
Execute
Time Note
4
™
Z380
U ' M
SER S ANUAL
IM
5-63