Neil Webber
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8259c035e0
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safeguard literal from allowing bad values into physmem
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2024-04-23 08:00:33 -05:00 |
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Neil Webber
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7a9fff6f8b
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was masking 18 bits not 16 in ubmap
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2024-04-23 07:55:16 -05:00 |
|
Neil Webber
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872ad7833d
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Make sure no illegal values outside 16 bit range loaded via loadphysmem
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2024-04-23 07:39:18 -05:00 |
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Neil Webber
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6e54a9dc9e
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accomodate octal formatting in machinestate for logging while still leaving raw values for, e.g., breakpoonts
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2024-04-18 17:02:38 -05:00 |
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Neil Webber
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9408867f47
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Delete mmio.py
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2024-04-16 23:11:11 -05:00 |
|
Neil Webber
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496f962c6c
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incorporate booting LDA
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2024-04-14 12:13:08 -05:00 |
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Neil Webber
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2ef5d03a8c
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Merge pull request #19 from folkertvanheusden/EMKAB0
BusCycle.WRITE16 in ioregsets
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2024-04-13 12:58:05 -05:00 |
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folkert van heusden
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81e8d1e9d9
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missing
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2024-04-13 19:38:57 +02:00 |
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Neil Webber
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1423e79813
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Fix I/O to registers via Unibus addrs; also microbreak register
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2024-04-13 12:24:48 -05:00 |
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Neil Webber
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e418355987
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fix boot_lda
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2024-04-11 17:40:09 -05:00 |
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Neil Webber
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22f05d58ca
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Revamp the unibus device callback system. New version has explicit BusCycle argument in one callback function vs the mishmash of time-evolved methods for reset, bytes, etc
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2024-04-11 16:59:06 -05:00 |
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Neil Webber
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c78972654c
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Revamp the unibus device callback system. New version has explicit BusCycle argument in one callback function vs the mishmash of time-evolved methods for reset, bytes, etc
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2024-04-11 16:58:41 -05:00 |
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Neil Webber
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1eba151bdb
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Allow zero bytes between blocks in LDA
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2024-04-11 16:40:07 -05:00 |
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Neil Webber
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6ef31cb034
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Checking in an intermediate LDA implementation but going to change it to conform 100% w SIMH
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2024-04-10 07:11:03 -05:00 |
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Neil Webber
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5ef8965399
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Test physRW_N
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2024-04-09 14:14:55 -05:00 |
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Neil Webber
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5993b73e6e
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Fix AddressError in RW_N when address is od
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2024-04-09 14:14:09 -05:00 |
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Neil Webber
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94c72d28a6
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Fix for #14 https://github.com/outofmbufs/python-pdp11-emulator/issues/14
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2024-04-07 08:56:00 -05:00 |
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Neil Webber
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974674e067
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Test for https://github.com/outofmbufs/python-pdp11-emulator/issues/14
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2024-04-07 08:55:43 -05:00 |
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Neil Webber
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dfb95bce2e
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Merge pull request #13 from folkertvanheusden/INC
INC fix
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2024-04-04 20:12:31 -05:00 |
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Folkert van Heusden
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9125cfbeac
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INC fix
v-flag may've been wrong due to missing parameter
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2024-04-04 22:40:16 +02:00 |
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Neil Webber
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bddbd824d9
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enable individual test selection from command line
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2024-04-01 11:13:49 -05:00 |
|
Neil Webber
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319f78f645
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Clean up unused BRANCH_NAMES
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2024-04-01 11:13:04 -05:00 |
|
Neil Webber
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d9031f7d8b
|
Acknowledgments
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2024-04-01 10:21:51 -05:00 |
|
Neil Webber
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d65986c619
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MFPI same bug as MTPI
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2024-04-01 10:16:37 -05:00 |
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Neil Webber
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7ea4acd24f
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Merge pull request #12 from folkertvanheusden/MTPID
N flag depends on bit 15
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2024-04-01 10:12:01 -05:00 |
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Neil Webber
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4410f073c4
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Fixes Issue NEG #11 ; v setting when zero
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2024-04-01 10:08:56 -05:00 |
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Neil Webber
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f6fb96a6e9
|
ooops, fix negb test to actually use NEGB
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2024-04-01 10:06:47 -05:00 |
|
Neil Webber
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8dd0b60fbd
|
test neg/negb
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2024-04-01 09:23:26 -05:00 |
|
Neil Webber
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54a7e86d0d
|
neg/negb
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2024-04-01 09:23:11 -05:00 |
|
Neil Webber
|
5ea5641186
|
remove unused imports
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2024-04-01 08:49:55 -05:00 |
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folkert van heusden
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ee26b46dda
|
N flag depends on bit 15
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2024-04-01 15:48:29 +02:00 |
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Neil Webber
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7920985eb5
|
pycodestyle complaints and remove unused import
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2024-04-01 08:47:08 -05:00 |
|
Neil Webber
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7fd5b507d5
|
missing import and fix _shifter when NN=0 per 1981 book. Issue Misc #10
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2024-04-01 07:56:22 -05:00 |
|
Neil Webber
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3a7d68bad1
|
__nodev signature fix
|
2024-04-01 07:42:21 -05:00 |
|
Neil Webber
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3afe220ac1
|
Merge pull request #8 from folkertvanheusden/SOB
made SOB into how simh does it
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2024-03-31 11:58:51 -05:00 |
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folkert van heusden
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3eecaa265d
|
made SOB into how simh does it
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2024-03-31 12:21:44 +02:00 |
|
Neil Webber
|
fa86a547ec
|
Speed up context switches by deferring I/D unfolding
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2024-03-30 08:47:27 -05:00 |
|
Neil Webber
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90c8237c51
|
Fix for 'python & signmask #6' -- xor is bitwise not boolean
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2024-03-30 08:28:58 -05:00 |
|
Neil Webber
|
2a8b38bc39
|
Added test for 'SWAP & N flag #5'
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2024-03-29 10:22:01 -05:00 |
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Neil Webber
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a6eceb1ace
|
Merge pull request #5 from folkertvanheusden/SWAB
SWAP & N flag
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2024-03-29 10:08:42 -05:00 |
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folkert van heusden
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b018d4bf06
|
According to
https://bitsavers.org/pdf/dec/pdp11/1170/PDP-11_70_Handbook_1977-78.pdf
page 64 (4-24):
"N: set if high-order bit of low-order byte (bit 7) of
result is set; cleared otherwise"
|
2024-03-29 15:00:57 +01:00 |
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Neil Webber
|
899e2a00ea
|
fix @(Rn)+/@-(Rn) incr/decr is always 2 -- Issue: 'addressing modes #4'
|
2024-03-29 08:54:00 -05:00 |
|
Neil Webber
|
7617579031
|
test @(Rn)+ and @-(Rn)
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2024-03-29 08:52:31 -05:00 |
|
Neil Webber
|
7b1eda6638
|
Merge pull request #3 from folkertvanheusden/SXT
SXT clears the V flag
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2024-03-28 19:45:49 -05:00 |
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folkert van heusden
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f10da0f269
|
SXT clears the V flag
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2024-03-28 23:56:22 +01:00 |
|
Neil Webber
|
954dd1240e
|
Merge pull request #2 from folkertvanheusden/BIC
BIC(B) & V flag
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2024-03-28 17:08:13 -05:00 |
|
folkert van heusden
|
dfdec49007
|
According to page 67 of PDP1120_Handbook_1972.pdf, BIC and BICB shall
clear the V flag when invoked.
|
2024-03-28 22:56:11 +01:00 |
|
Neil Webber
|
981efedeed
|
forward lebel relative test and revise other stuff for new/better getlabel idxrel mode
|
2023-11-01 10:25:42 -05:00 |
|
Neil Webber
|
2f17117c02
|
fixed up (again, maybe right this time) pcrel stuff in getlabel
|
2023-11-01 10:22:27 -05:00 |
|
Neil Webber
|
111347faa2
|
cleanups
|
2023-11-01 09:20:04 -05:00 |
|
