Intel iapx 432 manual 0010 1111 reserved

SYSTEM 0BJECl'S STRt.CIURES

Function State Field -

The function state field is used to describe the current state of the function request facility. It has the following organization.

8 bits lxxlxlxlxxxxl

1

1 1 1--function completion state

11----- SEND completion state

1 1-------	RECEIVE completion state
1---------	fault level
1----------------	reserved

The interpretation of the function completion state subfield is as follCMs:

0000 - function completed

0001 - function in progress

0010 - 1111 - reserved

The interpretation of the SEND or RECEIVE completion state subfields is as follows:

o - completed 1 - blocked

The fault level subfield indicates whether a fault which has occured is context-level, process-level, or processor-level. The fault handler requires this information in order to know where the fault information has been stored. The interpretation of the fault level subfield is as follCMS:

00 - none

01- context-level fault

10- process-level fault

11- processor-level fault

Mapping Facility Area -

The mapping facility consists of five' map entries capable of suworting the randan mapping of five non-overlapping address subranges from the Peripheral Subsystem into corresponding 432 data

segments. One of these map entries (entry 0) is capable of supporting block transfer as well as random mapping. One map entry (entry 1) is capable of supporting mapping into the 432 interconnection address space as well as random mapping. One map entry (entry 4) and its associated Peripheral Subsystem address subrange always maps onto the processor data segment. The two major purposes of this subrange are to capture references to the function request facility and to allCM Attached Processor software to read

A-IS