.EMMS 40 - enter master mode.

Usage:

ldq     {.data `------`},$
pmme    .EMMS,0

On entry

The Q register must contain 6 BCD dashes (`------`).

On return

On successful return the following registers are set.

X6
Known Process indeX, (KPX).
X7
processor number.
P0
destroyed.
P3 P.PSH
The PUSH segment for the process.
P5 P.SSL
The subsystem linkage segment.
P6 P.SSA
the Slave Service Area segment (PH.SSA).
P7 P.CR
the communication region (SD.CR).

Required privilege

Entry key PK.EMS, "Enter_Master_Mode".

Description:

PMME .EMMS is used to enter master mode and gain access to some important system segments.

The descriptors in P.PSH, P.SSL and P.CR have read and write permission. As long as the process remains in master mode, the system will update X7 with the current processor on each dispatch.

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