Sun Microelectronics
195
UltraSPARC Extended Instructions 13
13.1 Introduction
UltraSPARC extends the standard SPARC-V9 instruction set with three new
classes of instructions designed to support power-down mode (see Section 13.2,
“SHUTDOWN") enhance graphics functionality (see Section 13.5, “Graphics In-
structions”), and improve the efficiency of memory accesses (see Section 13.6,
“Memory Access Instructions).
13.2 SHUTDOWN
Format (3):
Description:
The SHUTDOWN instruction waits for all outstanding transactions to be com-
pleted. This leaves the system and external cache interface in a clean state. It then
sends a shutdown signal to the internal clock generator. The internal clock gener-
opcode opf operation
SHUTDOWN
0 1000 0000
Shutdown to enter power down mode
Suggested Assembly Language Syntax
shutdown
10 11 0110 ———
31 141924 18 13 02530 29 4
opf
5
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