Michel Heily
d36da30618
arm: Impl LDR_STR_HS
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Former-commit-id: 2baa0f2fb8cf855cb4626fbb1937e17f4e7d3035
2019-07-07 23:10:17 +03:00
Michel Heily
45f3bd6264
arm: Fix STR use of R15 as the base register (Rd)
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Former-commit-id: 696733731a9996ebb90b7d4acf3341facc1ed228
2019-07-07 22:57:21 +03:00
Michel Heily
c92bde54a1
Begin modeling DMA
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Former-commit-id: 83ab601e70666f76ed3ebfb22340c6b1868af3ac
2019-07-07 01:47:51 +03:00
Michel Heily
c2685c14d7
Impl more thumb, Fix more things, the usual
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Former-commit-id: 02f1898bfd8dd50519f103bb367e358fc55c46e7
2019-07-06 23:38:08 +03:00
Michel Heily
6dd48c6238
Add option to skip bios code so I can start checking out test roms
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Former-commit-id: b78c8d9807ba3097d641a57ec7fcd500b32b4d96
2019-07-06 19:26:51 +03:00
Michel Heily
36dba78c55
More fixes
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Former-commit-id: 897cbc0fb9c12469606c48ee8a02d35bf82c2ae5
2019-07-06 18:48:22 +03:00
Michel Heily
8dc169d25d
fix: bug in some ALU opcodes
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Former-commit-id: 7e05a11a709ad7f834916afa82ec5460068363f9
2019-07-06 18:47:42 +03:00
Michel Heily
efb5d361d6
Add PaletteView command for the debugger.
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Former-commit-id: c4e0250eea700cfbcbb9f904cde7b6bc055d3e05
2019-07-06 16:04:43 +03:00
Michel Heily
3cc84b1b03
Model many things
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Former-commit-id: b87fa2b16b395f497cf217ea043e68404ab2f65e
2019-07-06 15:54:07 +03:00
Michel Heily
d1ef35646f
Impl Thumb LdrStrImmOffset
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Former-commit-id: 17d6f4ae1cb5f68b9fccf35536a6346e88326e77
2019-07-06 15:51:58 +03:00
Michel Heily
600bebc9d2
Partially Impl Arm LDM_STM (give me a break)
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Manually testing seems to work, too lazy to write any tests now,
Will do it after all instructions are complete, buggy or not.
Former-commit-id: 0f36c81d6451c706408dd3c4815bfb3abea1ff44
2019-07-05 18:39:10 +03:00
Michel Heily
4da863da9b
Fix carry flag on barrel shifter ops
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Former-commit-id: 31cf2166d97fcdcca0dd9c59591f5e28b5b5f6cc
2019-07-05 18:31:08 +03:00
Michel Heily
638e449421
Impl Thumb 18 (Branch)
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Former-commit-id: 152dab739a1fa1b9d324084fc810b8540af9c3d7
2019-07-05 16:21:24 +03:00
Michel Heily
74329c2a0b
Never leave unfinished work..
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Former-commit-id: 91acecdaf3ec7f9de892bd9f712e3cf521e08beb
2019-07-05 16:10:21 +03:00
Michel Heily
0c50209735
Fix wrong calculation of conditional branch offset in Thumb mode
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Former-commit-id: 4cc28b13b19b2bf45e2b0e34d9a9dc0f83f82b01
2019-07-05 16:01:16 +03:00
Michel Heily
37117257a6
Impl Thumb 10 (load store halfword)
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Former-commit-id: 0d5e88f200613b6df2b999ecbb855ce480e73322
2019-07-05 15:50:14 +03:00
Michel Heily
d4b6952411
Impl Thumb 19, fix warnings and rustfmt
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Former-commit-id: 8690aa25b1aa343b344776716b6213596bd1459a
2019-07-05 15:34:52 +03:00
Michel Heily
fb0d3acb14
Impl Thumb Format 1 untested
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Former-commit-id: e80617fd415ba951310a42c79b6ca37251d0e250
2019-07-05 14:09:04 +03:00
Michel Heily
058760d7e4
Impl thumb Format4
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Former-commit-id: 7b8705ee7b76bbeb5b2a21e830d16db06ce8d63c
2019-07-05 13:58:26 +03:00
Michel Heily
01290f6a28
Impl Thumb LdrStrSp
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Untested.
Former-commit-id: 8fa842d4969e30247fc1706dfe053c7dfbb37843
2019-07-05 13:20:37 +03:00
Michel Heily
be9499c76d
Move cycle counting to CPU Core
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This isn't accurate, I'm probably missing something but at least it'll
make the instruction implementation more clean for now..
Former-commit-id: de24b15e1a51e1998207e5ea96fc8543f2553a26
2019-07-05 13:08:07 +03:00
Michel Heily
f8ebe26e5e
Implement thumb format 13
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(NOT TESTED)
Former-commit-id: 160ee3a6c09a12cab53f69c94b385ea17666bd5f
2019-07-05 03:46:04 +03:00
Michel Heily
5df9b6f317
Add thumb push-pop.
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Not tested, cycle modeling is crap
Former-commit-id: a5092dab79a1a660fc6c96a71f0908cc2054be27
2019-07-05 03:28:02 +03:00
Michel Heily
e66a8a9a3b
Fix LR again :(
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Former-commit-id: 820315154ae58dcc29c4a8921094598f149b0255
2019-07-05 03:27:23 +03:00
Michel Heily
2293300260
Add test for the bug fixed on e2a1303
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Former-commit-id: 98d0789aaf92a549cbe1b387461fd9acd4d773c0
2019-07-04 02:06:41 +03:00
Michel Heily
702a08e30c
Add many thumb instructions..
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TODO add more tests for all the instructions I've got implemented so
far.
Also, I need to rewrite the whole "sysbus" module again because it's
crap and I keep refactoring it as I go.
I've added the "Dummy" because the bios for some reason tries to memzero
an unmapped region on the work ram (the thumb loop that ends at 0x126)
Former-commit-id: 67befd0935ee10df9ac8ceeaebd14f69767a7f16
2019-07-04 01:56:50 +03:00
Michel Heily
984b17fa39
Fix arm mode STR insn
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Former-commit-id: 80903a9054e9b0dac07a5e2bb3cff7b0e722d438
2019-07-04 01:56:11 +03:00
Michel Heily
923032f8cf
REPL UI changes
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Former-commit-id: 6852b86541f967785dbffb6833fc2c11fa5dbef3
2019-07-04 01:37:47 +03:00
Michel Heily
3541779fbf
Fix LR when changing cpu modes
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Former-commit-id: 0ac911ee90758b9bffaafd459f1d9bca86d5064d
2019-07-04 01:37:05 +03:00
Michel Heily
6a3d4358da
Update .launch.json
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Former-commit-id: c922a1358c2a048d69c38e60734fc00ffa78a4a0
2019-07-04 01:36:41 +03:00
=
28743702a1
Update waitstates for 256k work ram
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Former-commit-id: f5680c90e4ab4a9b29899cd5e0fe316d8227fc24
2019-07-03 11:30:00 +03:00
MishMish
c9df623d36
Update README.md
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Former-commit-id: 03b224b7de9735a1ed43dd7460fe5fa9ece147b4
2019-07-03 02:23:36 +03:00
Michel Heily
eaf972de93
Implement thumb format 6 (PC-Relative Load) and test it.
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Former-commit-id: ae161edb0c8968913d2ef72a14053c118c6f7692
2019-07-03 02:15:16 +03:00
Michel Heily
58e1230e7a
Model the cartidge.
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Former-commit-id: b51d2928631bfc438b9f1b15fafcaa9d90008179
2019-07-03 01:40:08 +03:00
Michel Heily
b82874809f
Implement thumb format3 instruction and add a test for it.
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Former-commit-id: 8cf6664027dc3d5dbeb6d2ca3d089820baac2709
2019-07-03 01:26:48 +03:00
Michel Heily
4011911cca
Pass around "Bus" instead of "SysBus"
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Former-commit-id: c20dae7dd3ddcb3bd8f671a16fd67a241bd6c459
2019-07-03 01:22:36 +03:00
Michel Heily
6f81c236a6
Mega Commit #2 - Add some thumb decoding and disassembly
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Former-commit-id: e3a89ac681a8d6f6f0bee85b32f64d181e11242f
2019-07-03 00:03:35 +03:00
Michel Heily
cbddeffd91
arm: Implement MSR_REG and fix some prefetching errors
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Former-commit-id: 177b8966159ed86472b0d4d031363df72d46807a
2019-07-02 16:53:29 +03:00
Michel Heily
05fb40c17c
debugger: Add Deref expression.
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i.e:
r5 = *r6
r5 = *(u8*)r6
r5 = *(u16*)0x08000000
Former-commit-id: 962dade8e3c0b9f291115285137cf51b0abde266
2019-07-02 13:36:52 +03:00
Michel Heily
645e71ac40
Remove garbage file
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Former-commit-id: 906b8bc6f6b95ddc3565043ff4406a403e7ba08a
2019-07-01 19:26:52 +03:00
Michel Heily
70179984d0
cpu: arm: Fix alu_add_update_carry function
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Woopsie
Former-commit-id: 2da74e4bfd4b59a2885519a99f4b2c3d83031ee2
2019-07-01 19:25:42 +03:00
Michel Heily
2081b70ee2
cpu: arm: Fix R14 for branch with link instruction
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Former-commit-id: bc927d86e5a170b0e4568b4ceeb7832d23ad309c
2019-07-01 19:24:52 +03:00
Michel Heily
ea8c4f2a60
Refactor ArmInstructionFormat => ArmFormat
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Former-commit-id: 0ba6e1e6efedad55b2716b3f2ab5a2a629dd18a5
2019-07-01 17:51:07 +03:00
Michel Heily
6b225d776d
Implement all memory mappings. Reformat many files.
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Former-commit-id: c0a62b610e62d2db2a4daf4aeef40068820daa52
2019-07-01 17:45:29 +03:00
Michel Heily
22c175d9cc
Reorganize package structure
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Former-commit-id: d7ad26c07fc7063522fae061577f7ceece797ae5
2019-07-01 16:15:42 +03:00
Michel Heily
bd053354cb
Implement LDR/STR (not tested) and add cycle counting
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Former-commit-id: ec9e6bfc2a94291e47d41ff7d839007879d3d694
2019-06-30 16:59:37 +03:00
Michel Heily
98eee121fc
Correct F flag behaviour when entrying an exception.
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Former-commit-id: b0ef6352d9f0c027657c6e5eeb615a131e9523d2
2019-06-29 23:01:23 +03:00
Michel Heily
967ccca8dd
Mega commit - model CPU pipelining.
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I except many bugs to arise..
Former-commit-id: bcc6ea57af803f783b0dd548b50956b3ccda2b1a
2019-06-29 22:23:12 +03:00
Michel Heily
4c75970512
debugger: Detect error
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Former-commit-id: 1ea605eeab1a7b8e6645fe11d7b32c4c7dff0750
2019-06-29 01:48:29 +03:00
Michel Heily
2238c7a72f
Add demo gif to README.md
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Former-commit-id: 05ec55725c04cd4d4ca08471ea88b1b6b1b11e08
2019-06-28 15:32:21 +03:00
