Compaq ECQD2KCTE Laptop User Manual


 
Common PALcode Architecture 6–7
6.7.2 Halt
Format:
Operation:
IF PS<literal>(<)CM> NE 0 THEN
{privileged instruction exception}
CASE {halt_action} OF
! Operating System or Platform dependent choice
halt: {halt}
restart/boot/halt: {restart/boot/halt}
boot/halt: {boot/halt}
debugger/halt: {debugger/halt}
restart/halt: {restart/halt}
ENDCASE
Exceptions:
Instruction mnemonics:
Description:
The HALT instruction stops normal instruction processing and initiates some other operating
system or platform-specific behavior, depending on the HALT action setting. The choice of
behavior typically includes the initiation of a restart sequence, a system bootstrap, or entry into
console mode. See Console Interface (III), Chapter 3, in the Alpha Architecture Reference
Manual.
CALL_PAL HALT
!PALcode format
Privileged Instruction
CALL_PAL HALT Halt Processor