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Added MMU dump command ("d mmu [filter]"), fixed byte updates of PDRs, masked 18-bit UNIBUS addresses when UNIBUS relocation map not enabled, and fixed reads of MMR0 when ABORT bits are set

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Jeff 2016-11-17 13:22:25 -08:00 • committed by Jeff Parsons
commit 9148cec085
8 changed files with 424 additions and 360 deletions
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18
modules/pdp11/lib/defines.js
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@ -351,6 +351,24 @@ var PDP11 = {
MMU_22BIT: 0x0010,
UNIBUS_MAP: 0x0020 // UNIBUS map relocation enabled
},
PDR: {
ACF: {
NR: 0x0, // non-resident, abort all accesses
RO1: 0x1, // read-only, abort on write attempt, memory management trap on read (11/70 only)
RO: 0x2, // read-only, abort on write attempt
U1: 0x3, // unused, abort all accesses--reserved for future use
RW1: 0x4, // read/write, memory management trap upon completion of a read or write
RW2: 0x5, // read/write, memory management trap upon completion of a write (11/70 only)
RW: 0x6, // read/write, no system trap/abort action
U2: 0x7 // unused, abort all accesses--reserved for future use
},
ED: 0x0080, // expansion direction (if set, the page expands downward from block number 127)
UNUSED: 0x0030,
MODIFIED: 0x0040, // page has been written (bit cleared when either PDR or PAR is written)
ACCESSED: 0x0080, // page has been accessed (bit cleared when either PDR or PAR is written) (11/70 only)
PLF: 0x7F00, // page length field
BC: 0x8000 // bypass cache (11/44 only)
},
/*
* Assorted special (UNIBUS) addresses
*