DSKCG DECSYSTEM 2020 Advanced Instruction Diagnostic (7) Failure

[jfcl]

The DSKCG diagnostic fails with both paging enabled and paging disabled.

SMMON CMD - dskcg

DECSYSTEM 2020 ADVANCED INSTRUCTION DIAGNOSTIC (7) [DSKCG]
VERSION 0.2, SV=0.3, CPU#=4097, MCV=130, MCO=470, HO=0, KASW=000000 000000

TTY SWITCH CONTROL ? - 0,S OR Y <CR> - 0
SWITCHES = 000000 000000

PC=  032073
SWITCHES = 000000 000000
ERROR IN EDIT - SIGST (002) PATTERN BYTE TYPE TEST

PATTERN BYTE TYPE UNDER TEST: SIGST
CASE # 1

AC BLOCKS:             ---- FINAL ----
   ORIGINAL        CORRECT         ACTUAL
000000 036246   420000 036246   420000 036246
440500 035774   440500 035774   440500 035774
000000 000000   000000 000000   000000 000000
000000 000000   000000 000000   000000 000000
440500 036020   370500 036020   000000 000000

CORRECT DESTINATION STRING:
23      0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0

ACTUAL DESTINATION STRING:
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0       0
0       0       0       0

KS10: Halted.
KS10: Halt Cause: Halt Instruction. (PC=002012)
  Halt Status Block Address is 376000
  PC  is 000000002012     HR  is 702300000100
  MAG is 377777777777     ONE is 000000000001
  AR  is 000000000100     ARX is 000000000001
  BR  is 000000376000     BRX is 000000035773
  EBR is 000020000000     UBR is 500000000000
  MSK is 777777777777     FLG is 024000000000
  PI  is 000000000377     X1  is 000001000001
  TO  is 200373000373     T1  is 000000000002
  VMA is 140000002012