ST20-C1 STMICROELECTRONICS [STMicroelectronics], ST20-C1 Datasheet - Page 154

• Manufacturer Part Number: ST20-C1
• Description: Instruction Set Reference Manual
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Status Register:
Comments:
See also: dequeue enqueue run wait
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}
where frontptr = word[SchedulerQptr @ q.FPtrLoc]
Global interrupt enable and timeslice enable are preserved.
Start_next_task is set when the current process is descheduled and cleared
when the new process is started. An interrupt may occur between these two
stages.
Other bits are set to the values listed above.
Secondary instruction.
Deschedules the current process.
This instruction must not be used in an exception handler.
Chapter 7 .
}
Areg
Breg
Creg
Iptr
if (frontptr = backptr)
else
backptr = word[SchedulerQptr @ q.BPtrLoc]
word [SchedulerQptr @ q.FPtrLoc]
word [SchedulerQptr @ q.FPtrLoc]
undefined
undefined
undefined
word [frontptr @ pw.Iptr]
--one process on queue, so make it empty
--
many processes, so remove first
NotProcess
word[frontptr @ pw.Link]