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
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ooops, fix negb test to actually use NEGB
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2024-04-01 10:06:47 -05:00 |
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Neil Webber
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8dd0b60fbd
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test neg/negb
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2024-04-01 09:23:26 -05:00 |
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Neil Webber
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54a7e86d0d
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neg/negb
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2024-04-01 09:23:11 -05:00 |
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Neil Webber
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5ea5641186
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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
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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
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pycodestyle complaints and remove unused import
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2024-04-01 08:47:08 -05:00 |
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Neil Webber
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7fd5b507d5
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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 |
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Neil Webber
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3a7d68bad1
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__nodev signature fix
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2024-04-01 07:42:21 -05:00 |
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Neil Webber
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3afe220ac1
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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
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made SOB into how simh does it
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2024-03-31 12:21:44 +02:00 |
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Neil Webber
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fa86a547ec
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Speed up context switches by deferring I/D unfolding
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2024-03-30 08:47:27 -05:00 |
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Neil Webber
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90c8237c51
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Fix for 'python & signmask #6' -- xor is bitwise not boolean
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2024-03-30 08:28:58 -05:00 |
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Neil Webber
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2a8b38bc39
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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
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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
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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"
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2024-03-29 15:00:57 +01:00 |
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Neil Webber
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899e2a00ea
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fix @(Rn)+/@-(Rn) incr/decr is always 2 -- Issue: 'addressing modes #4'
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2024-03-29 08:54:00 -05:00 |
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Neil Webber
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7617579031
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test @(Rn)+ and @-(Rn)
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2024-03-29 08:52:31 -05:00 |
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Neil Webber
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7b1eda6638
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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
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SXT clears the V flag
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2024-03-28 23:56:22 +01:00 |
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Neil Webber
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954dd1240e
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Merge pull request #2 from folkertvanheusden/BIC
BIC(B) & V flag
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2024-03-28 17:08:13 -05:00 |
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folkert van heusden
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dfdec49007
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According to page 67 of PDP1120_Handbook_1972.pdf, BIC and BICB shall
clear the V flag when invoked.
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2024-03-28 22:56:11 +01:00 |
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Neil Webber
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981efedeed
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forward lebel relative test and revise other stuff for new/better getlabel idxrel mode
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2023-11-01 10:25:42 -05:00 |
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Neil Webber
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2f17117c02
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fixed up (again, maybe right this time) pcrel stuff in getlabel
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2023-11-01 10:22:27 -05:00 |
|
Neil Webber
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111347faa2
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cleanups
|
2023-11-01 09:20:04 -05:00 |
|
Neil Webber
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f2c1c20857
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updates
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2023-11-01 09:19:36 -05:00 |
|
Neil Webber
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fbc66608dc
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comment cleanups
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2023-11-01 09:19:09 -05:00 |
|
Neil Webber
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7354007fe4
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more fwdref improvements, some more instrs
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2023-11-01 09:15:57 -05:00 |
|
Neil Webber
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1f196e1923
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fix backwards raw label references
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2023-10-29 09:05:12 -05:00 |
|
Neil Webber
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bfd40bafa1
|
rorb
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2023-10-28 18:15:36 -05:00 |
|
Neil Webber
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2c20aa66b9
|
asrb
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2023-10-28 13:35:51 -05:00 |
|
Neil Webber
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fbd057450c
|
huge semantic mistake in movb ... fixed
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2023-10-28 13:35:10 -05:00 |
|
Neil Webber
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482b25d07a
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byte semantics test
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2023-10-28 13:33:48 -05:00 |
|
Neil Webber
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e42601ae14
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Pretty important bug fix for byte instruction register semantics
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2023-10-28 13:33:20 -05:00 |
|
Neil Webber
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e3c0782c72
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ignore/allow
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2023-10-23 12:06:44 -05:00 |
|
Neil Webber
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0a4467009f
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first
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2023-10-23 12:03:58 -05:00 |
|
Neil Webber
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4249500cc4
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NOTES
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2023-10-23 12:03:53 -05:00 |
|
Neil Webber
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df73e5dbf2
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Just use InstructionBlock, no more WITH
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2023-10-23 10:12:36 -05:00 |
|
Neil Webber
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33b771e700
|
fix yellow handling; fix base register set; other cleanups
|
2023-10-23 10:12:07 -05:00 |
|
Neil Webber
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42923f5f18
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register_simpleattr wasn't returning value
|
2023-10-23 10:11:18 -05:00 |
|
Neil Webber
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5009f75ad9
|
JMP tests
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2023-10-23 10:10:18 -05:00 |
|
Neil Webber
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7237ed2020
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include non-interrupt mode emulation
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2023-10-23 10:09:04 -05:00 |
|
Neil Webber
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9239792d6d
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cleanup
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2023-10-23 10:04:20 -05:00 |
|
Neil Webber
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6f8bc554bb
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eliminated ASM with
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2023-10-23 08:38:16 -05:00 |
|
Neil Webber
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1259e2ef80
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pre with removal
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2023-10-23 08:14:07 -05:00 |
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Neil Webber
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267a9a1b8e
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jmp, jsr, several more instructions
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2023-10-22 18:32:47 -05:00 |
|
Neil Webber
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d07363b983
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invis
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2023-10-19 13:27:57 -05:00 |
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Neil Webber
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fd03a30e4c
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more options
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2023-10-17 22:09:33 -05:00 |
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