Zilog Z80380 Manuale Utente Pagina 97

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5-63
Z380
USER'S MANUAL
ZILOG
DC-8297-03
IM
INTERRUPT MODE SELECT
IM p p = 0, 1, 2, 3
Operation: SR(4-3) p
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 Execute
Mode Syntax Instruction Format Time Note
IM p 11101101 010pp110 4
Field Encodings: pp: 00 for Mode 0, 01 for Mode 3, 10 for Mode 1, 11 for Mode 2
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