crash unimp write

[digarok]

Reproduce, enter monitor from boot.

enter 1 enter m

Result:

UNIMP WRITE to addr 0000cffe, val: 0084
UNIMP WRITE to addr 0000cffd, val: 0000
UNIMP WRITE to addr 0000cffb, val: 0086
UNIMP WRITE to addr 0000cffc, val: 0002
UNIMP WRITE to addr 0000cffa, val: 0084
UNIMP WRITE to addr 0000cff9, val: 0000
UNIMP WRITE to addr 0000cff7, val: 0086
UNIMP WRITE to addr 0000cff8, val: 0002
UNIMP WRITE to addr 0000cff6, val: 0084
UNIMP WRITE to addr 0000cff5, val: 0000
UNIMP WRITE to addr 0000cff3, val: 0086
UNIMP WRITE to addr 0000cff4, val: 0002
UNIMP WRITE to addr 0000cff2, val: 0084
UNIMP WRITE to addr 0000cff1, val: 0000
UNIMP WRITE to addr 0000cfef, val: 0086
 ... trimmed ...
UNIMP WRITE to addr 0000c0c5, val: 0000
UNIMP WRITE to addr 0000c0c3, val: 0086
UNIMP WRITE to addr 0000c0c4, val: 0002
UNIMP WRITE to addr 0000c0c2, val: 0084
UNIMP WRITE to addr 0000c0c1, val: 0000
WRite loc: c0bf
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