Icall - Lucent Technologies DSP1617 Information Manual

DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
Instruction Set Summary

icall

(software interrupt)
(pi) ← (PC + 1)
(PC) ← 2
IACK
The icall instruction is reserved for use by the hardware development system. The interrupt handler is called just
as it would be by an external interrupt. The interrupt return register is set to PC + 1, and the PC is set to two to
start execution at the interrupt handler. Note that icall vectors to memory address two. The interrupt acknowledge
pin (IACK) is set just as it would be by an external interrupt.
Bit 15 14 13
Field 1 1 0
B-5
12 11 10 9
1 0 1 0
Words: 1
Cycles: 3
Group: Control
Addressing: None
Flags affected: None
Interruptible: No
Cacheable: No
Format: 6
DRAFT COPY
8 7 6 5
0 0 0 0
Information Manual
April 1998
4 3 2 1
0 1 1 1
Lucent Technologies Inc.
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