Adrian.Conlon
36fbee35fb
Bring the various IntelProcessor derived processors a little closer together.
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-07-19 13:59:28 +01:00
Adrian.Conlon
758574007d
Ensure GB register accesses pass through bus notification code.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-18 21:41:10 +01:00
Adrian.Conlon
99e3454527
Memory locking is dependent on the GB hardware, not the size of the program, so allow lock ranges to be manually specified.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-18 21:40:29 +01:00
Adrian.Conlon
974c3353cc
Simplify LR35902 memory read/write a little.
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-07-18 11:28:06 +01:00
Adrian.Conlon
35def4184a
Start adding enough infrastructure to support memory mapped IO on LR35902.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-18 00:13:41 +01:00
Adrian.Conlon
627d30e896
Merge branch 'master' of https://github.com/MoleskiCoder/EightBit
2017-07-17 21:39:13 +01:00
Adrian.Conlon
2b29c3fe64
Correct a couple of LR35902 issues.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 21:38:58 +01:00
Adrian.Conlon
017b2a6442
Tidy up memory event handling to make it a bit easier to verify read/write events.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 21:00:05 +01:00
Adrian.Conlon
13725b7a3c
Tidy method casing a little.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 15:35:24 +01:00
Adrian.Conlon
da3b966666
Update readme to show the 6502 implementation is in pretty good shape.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 13:48:15 +01:00
Adrian.Conlon
4f491f110e
Make the 6502 a little more compatible with other processor implementations.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 13:46:06 +01:00
Adrian.Conlon
867b0d5260
Add more flexible configuration class for 6502
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-17 10:16:15 +01:00
Adrian.Conlon
71d213faec
Ensure that memory read/write events are triggered.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-16 10:40:38 +01:00
Adrian.Conlon
d522b694bd
Make the flag adjustment a little more consistent with the rest of my emulators.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-16 10:05:49 +01:00
Adrian.Conlon
d1bb49143d
Reinstate operation timings (TBC)
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-15 23:19:46 +01:00
Adrian.Conlon
3084d2341c
New improved disassembler for 6502: much smaller than before.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-14 17:22:28 +01:00
Adrian.Conlon
7ff7ee040f
Experimental decoding 6502 interpreter. Runs Klaus Dormann tests to completion.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-13 12:02:44 +01:00
Adrian.Conlon
8c81a27224
"Modernise" the 6502 emulator a little. Not complete, but does successfully complete Klaus Dormann tests.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-11 21:34:01 +01:00
Adrian.Conlon
d3c0494fb3
Switch back to use standard bit encoded fields.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-10 15:51:33 +01:00
Adrian.Conlon
3001a97128
Don't bother wiring up memory events that the 6502 doesn't need (I think!)
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-08 09:41:07 +01:00
Adrian.Conlon
8256d97b60
Modified to work with my builds of the Klaus Dormann 6502 test suite.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-08 01:04:20 +01:00
Adrian.Conlon
179ec7435f
Whoops: adjustment of the block output flag handling was quite wrong! Thanks fuse test suite!
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 20:55:32 +01:00
Adrian.Conlon
3146867101
Correct a couple of exception throws.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 19:40:15 +01:00
Adrian.Conlon
3c0a1697fd
Fetching bytes/words and stack access are more processor specific than I thought.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 09:27:06 +01:00
Adrian.Conlon
7cd0f324de
Better register definitions for the 6502
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 09:24:58 +01:00
Adrian.Conlon
f970c45005
Get the loop exit conditions worked out.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-06 21:32:52 +01:00
Adrian.Conlon
04fd979e56
6502: Better wrapping for the executing/executed events to avoid "fetchByte" issue.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-06 12:02:41 +01:00
Adrian.Conlon
4cd2dc68e1
Correct some (but not all!) project configuration anomalies.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 19:36:25 +01:00
Adrian.Conlon
d4b133e9ac
Show cycles per second as MHz
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 19:15:58 +01:00
Adrian.Conlon
7910ada7fa
First stab at a running M6502 test suite. Running Klaus Dormann tests
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 17:46:02 +01:00
Adrian.Conlon
6db32ae7c5
Small consistency change in the 8-bit memory model.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 17:44:47 +01:00
Adrian.Conlon
0e7ad4dd01
Correct a couple of inconsistencies in the test harness.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-05 17:40:16 +01:00
Adrian.Conlon
983639d530
Correct a couple of header issues in the test harness.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-04 13:00:23 +01:00
Adrian.Conlon
f52edaf8bc
Tidy up 16-bit add/subtract to properly use MEMPTR.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-03 21:42:18 +01:00
Adrian.Conlon
8f84d57fe1
A few small tidy ups.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-02 22:23:20 +01:00
Adrian.Conlon
88d3e4fd47
Initial stab at getting MOS6502 imported to the EightBit library.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-02 22:03:33 +01:00
Adrian.Conlon
6af1857cb0
A few minor consistency tweaks to the i8080 and z80 processors.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-02 17:38:19 +01:00
Adrian.Conlon
8f57fac3ee
Use the same optimisation techniques on the Z80 header. Up to 233Mhz now.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-29 21:35:52 +01:00
Adrian.Conlon
3439523865
Some more optimisations, up to 225Mhz now.
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Reordered if statements to give "then" case "expected"
Better use of "__assume" in switch statements
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-29 21:25:58 +01:00
Adrian.Conlon
10ed04bf90
Update README.md
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-29 18:44:30 +01:00
Adrian.Conlon
366c3fc601
Simplification of bitwise operators.
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-29 12:19:22 +01:00
Adrian.Conlon
ea4588992d
Whoops: missing switch/break was falling into an assume(0). Caused two fuse tests to fail...
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-29 10:18:07 +01:00
Adrian.Conlon
954887217f
Performance mods: probably about 30% speedup: the best yet.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-29 00:50:34 +01:00
Adrian.Conlon
7582d65ea3
Lots more method tidy ups in search of performance.
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-28 15:39:31 +01:00
Adrian.Conlon
35efc86195
Simplify the use of the REFRESH register
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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-27 14:02:29 +01:00
Adrian.Conlon
c803387023
A few modifications:
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1) Simplify REFRESH register handling via bit fields.
2) Use static methods in the Z80 emulator, if at all possible
3) Use a decoded opcode lookup, rather than decoding per instruction
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-26 23:22:32 +01:00
Adrian.Conlon
d22b695682
Modify test harness to show host CPU cycle efficiency.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-25 23:48:15 +01:00
Adrian.Conlon
a7d9cb0116
Fix an optimisation instruction ordering issue: fetchByte on both rhs/lhs.
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This caused two failing tests in the debug build of the fuse test suite.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-24 21:38:42 +01:00
Adrian.Conlon
993fe5d2b4
Correct position of fuse test input.
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-24 11:00:19 +01:00
Adrian.Conlon
67174d74af
Correct some memory access issues in LR35902
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Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-23 21:23:20 +01:00