Vax V-041HS Service Manual download pdf (Page 107)

Table 3–8 (Cont.): Machine Check Parameters

Parameter Value Description

8 Process PTE in P1 space during

M = 0 ﬂows

9 Undeﬁned INT.ID value

A Undeﬁned MOVCx state

80 Memory read error

81 SCB, PCB, or SPTE read error

82 Memory write error

83 SCB, PCB, or SPTE write error

Most recent virtual address

(SP+8)

<31:0> Current contents of VAP register

Internal state information #1

(SP+C)

<31:24> Opcode

<23:16> 1110, highest priority software inter-

rupt <3:0>

<15:8> CADR<7:0>

<7:0> MSER<7:0>

Internal state information #2

(SP+10)

<31:24> Most recent contents of SC register <7:0>

<23:16> 11, state ﬂags <5:0>

<15:8> Restart ﬂag, 111, ALU CC ﬂags <3:0>

<7:0> Offset from saved PC to PC at time of ma-

chine check

(SP+14)

<31:0> PC at the start of the current instruc-

tion

PSL

(SP+18)

<31:0> Current contents of PSL

Machine checks are taken regardless of the current IPL. During a machine

check the IPL is raised to 1F and the machine check frame is pushed onto

the interrupt stack. If the machine check exception vector bits (<1:0>) are

not both one, the operation of the processor is undeﬁned.

<REFERENCE>(xyp) Scalar Processor 3–37

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 298 299

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Vax V-041HS Service Manual Page 107