6502/EightBit
1
0
Fork 0
mirror of https://github.com/MoleskiCoder/EightBit.git synced 2024-12-23 00:29:47 +00:00
Code Issues Projects Releases Wiki Activity
940 Commits 1 Branch 0 Tags 113 MiB
42afeb342f
Commit Graph

263 Commits

Author SHA1 Message Date
Adrian Conlon
bb7de9d3e1 Prefer passing byte_t by value. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 11:44:58 +01:00
Adrian Conlon
16752474d9 Correct a casting issue in the rapidjson implementation 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 11:43:06 +01:00
Adrian Conlon
1943db6f20 rapidjson can use an std::string constructor. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 10:57:27 +01:00
Adrian Conlon
710c8fb883 Refactor the ram_t class to be a container of byte_t 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 09:28:13 +01:00
Adrian Conlon
2be190af19 Couple of small consistency changes in the rapidjson implementation. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 00:59:02 +01:00
Adrian Conlon
91bd04a278 Add support for rapidjson parsing 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-19 00:39:26 +01:00
Adrian Conlon
dc0fc262a2 More micro-optimisations. 2021-10-18 20:40:13 +01:00
Adrian Conlon
357e51c09a Clarify some (no) exception specifications. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 17:19:28 +01:00
Adrian Conlon
f62e8c30a2 Remove some unneeded default constructors. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 13:22:06 +01:00
Adrian Conlon
b56a2450a1 Couple of blank lines removed. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 13:13:43 +01:00
Adrian Conlon
1234aaf9d9 Refactor RAM test values. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 13:12:22 +01:00
Adrian Conlon
9cd317624e Couple of extra safety checks. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 12:28:15 +01:00
Adrian Conlon
fa50f74508 Tidy the previous cycle parsing refactor and reset to a simdjson pukka run. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 12:07:24 +01:00
Adrian Conlon
79f3e3ac6c Refactor the code to isolate the cycles parsing. Interesting speed up! 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-18 11:54:01 +01:00
Adrian Conlon
50cea1b81a Some JSON C++ library example code "levelling" 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-17 18:36:27 +01:00
Adrian Conlon
500e65b895 Tidy up the code a little (including removing some no longer needed code). 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-13 23:33:08 +01:00
Adrian Conlon
4892ea95d3 Split load/parse of opcode tests. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-12 17:07:45 +01:00
Adrian Conlon
dcba8efc83 All experimentation on the effect of JSON parser reuser. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-12 10:10:45 +01:00
Adrian Conlon
31c3a57485 If I've bothered to try and implement the failing test, show the actual and expected events. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 23:56:20 +01:00
Adrian Conlon
77a2c08c20 Remove some build warnings. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 23:23:59 +01:00
Adrian Conlon
91221aa975 Try simdjson: bloody hell, that's fast!! 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 22:09:03 +01:00
Adrian Conlon
b5074ac48c Create an overtly performance checking build. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 19:52:22 +01:00
Adrian Conlon
59d1e2789e Whoops: missed reference to RapidJson 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 19:39:37 +01:00
Adrian Conlon
7a7b0046cd Add an implementation that uses JsonCpp (pretty slow!) 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 19:13:05 +01:00
Adrian Conlon
f3f6452119 Add nlohmann json parser as an option to build. 
1/2 speed, compared to boost.json

Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 14:59:23 +01:00
Adrian Conlon
db106b1719 Performance: speed up message handling in TestRunner. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 11:41:50 +01:00
Adrian Conlon
5686906583 Add nodiscard attributes, where needed 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 10:43:33 +01:00
Adrian Conlon
4be61a9d54 Separate concerns a little between low level classes and high level classes in terms of report generation. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-11 10:20:18 +01:00
Adrian Conlon
760f5d5aec Correct filler memoryRead accesses to use PC() rather than the last location read. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-10 21:35:26 +01:00
Adrian Conlon
6a59bfbcd8 First stab at using the Harte randomised processor tests. Some failures detected in the M6502 run. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-10 21:26:30 +01:00
Adrian Conlon
6c3ef821bf Update for latest boost v1.77 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-10-10 21:25:21 +01:00
Adrian Conlon
22506ea56c Extensive change warning: lots of "noexcept" and "constexpr" changes. Not sure if I'll keep all of them, but interesting... 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-07-18 14:28:40 +01:00
Adrian Conlon
2f76e901f9 More tidying of include files for VS2019 compatibility (plus more correct!) 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-05-29 12:18:13 +01:00
Adrian Conlon
cab29e3ce4 Tidy some code formatting. No functional changes. 2021-04-07 21:37:30 +01:00
Adrian Conlon
2992a0e78a Event fire: use default arguments, where possible. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-04-07 21:36:53 +01:00
Adrian Conlon
2fa9ffd1e3 Tidy up some C++ a little 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-04-07 21:36:09 +01:00
Adrian Conlon
b1ca06447f Ensure 6502 uses memory rather than bus read/write mechanism 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-03-08 16:44:09 +00:00
Adrian Conlon
6285a397ab Tidy 6502 whitespace 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2020-02-22 09:02:37 +00:00
Adrian Conlon
c8bdabf34f Reflect that the I/O for Intel style processors isn't part of the CPU, but attached to the Bus and access controlled by the CPU. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2020-02-09 11:51:58 +00:00
Adrian Conlon
d9466082ec M-Cycle accurate Z80 modifications. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-12-29 01:18:54 +00:00
Adrian Conlon
d0467421ff Improve compatibility with .net emulator code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-09 18:58:23 +00:00
Adrian Conlon
ee3ecc682d Add R/W pins to the MC6809 and MOS6502 processors. Hoping it'll ease peripheral development. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-15 12:49:32 +01:00
Adrian Conlon
254cfbe342 Tidied up pin management to be synchronised with the .Net code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-06 23:55:57 +01:00
Adrian Conlon
6940a54355 Update all EightBit projects to VS2019 (Latest SDK, C++17) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-17 11:04:29 +01:00
Adrian Conlon
5e9014997a Upgraded to VS2019, default SDK. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-06 13:16:38 +01:00
Adrian Conlon
def1c58e9d Tidy project settings across the EightBit library to be more consistent. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-07-06 22:45:16 +01:00
Adrian Conlon
f5582df402 Add some more M6502 documentation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-05-05 10:30:33 +01:00
Adrian Conlon
1a0d3ad77a Go through all projects for configuration consistency. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-05-05 10:25:44 +01:00
Adrian Conlon
f0376fa81e Use macros to define our device pins. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-14 23:17:54 +00:00
Adrian Conlon
7f853ec73f Add missing 6502 pin events 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-14 08:26:27 +00:00
Adrian Conlon
92d23d82d6 Start big refactor of device/CPU pin usage (to allow pin events throughout). 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-14 02:10:17 +00:00
Adrian Conlon
68030610d8 Move to an event driven clock tick event for all CPUs 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-09 23:24:33 +00:00
Adrian Conlon
8b187e7614 The clock still has to tick, even while held on RDY low, otherwise cycle timing won't work. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-09 09:05:12 +00:00
Adrian Conlon
a90ca6ba38 Move RDY initialisation to the CPU power-on sequence. Not strictly correct, but OK. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-09 00:33:56 +00:00
Adrian Conlon
87d86bcd84 Whoops: missed unneeded method declaration. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-09 00:08:03 +00:00
Adrian Conlon
01175cf9eb Add support for emulated SYNC and RDY lines. Untested, but feel close. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-08 23:55:27 +00:00
Adrian Conlon
047babbe7c Rearrange the RESET handler for cycle accuracy. Use more of the general interrupt handler, but with "dummy" stack write access. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-08 23:09:52 +00:00
Adrian Conlon
25321e78e7 Now that HALT/RESET/NMI/IRQ and BRK have a unified architecture, I think this wraps up the instruction handler of the 6502. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-08 01:32:43 +00:00
Adrian Conlon
3faec680b0 I think this fixes one of my NES issues. The fix-up required for the PC is handled by the fetchByte associated with the BRK instruction. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-07 01:28:23 +00:00
Adrian Conlon
d7763d8215 Profile mode no longer exists on the 6502 test program. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-07 01:08:23 +00:00
Adrian Conlon
06e2a5c947 Start unifying 6502 interrupt handling. NMI/IRQ/BRK are all doing mostly the same work. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-07 01:06:07 +00:00
Adrian Conlon
b7b7c93a77 This tidies the last of 6502 cycle accurate instruction implementations. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 22:34:53 +00:00
Adrian Conlon
ad644f7013 Tidy the 6502 instruction switch statement a little to lessen the width a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 20:51:13 +00:00
Adrian Conlon
c3d2ef51d9 Cycle accuracy for a couple of the indexed write (store) instructions. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 20:39:37 +00:00
Adrian Conlon
4d3be9e756 Use correct boundary crossing conditional for Read/Modify/Write Absolute,X addressing mode. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 12:58:13 +00:00
Adrian Conlon
baf32cef89 Get the memory access more correct for more of boundary crossing indexed addressing modes. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 12:17:43 +00:00
Adrian Conlon
a13ad5042a Correct constructions of register16_t: the structure is "#ifdef"ed for different endian arrangements. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 11:27:43 +00:00
Adrian Conlon
3749585398 Cycle accuracy changes for BRK/RTI instructions. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 11:13:49 +00:00
Adrian Conlon
3337f57747 More cycle accuracy changes, concentrating on stack operations. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-05 23:21:43 +00:00
Adrian Conlon
f5125b2a35 Add some documentation regarding instruction cycle timings. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-05 23:21:12 +00:00
Adrian Conlon
143e9a9e68 More cycle accuracy changes: 
1) implied instruction, pointless fetch
 2) branch pointless fetch when condition is met

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-05 17:23:50 +00:00
Adrian Conlon
3b7cec9c69 Spot a couple more addCycle patterns. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-04 09:17:59 +00:00
Adrian Conlon
d2e853f101 Explicitly note implied addressing mode instructions. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-04 08:20:23 +00:00
Adrian Conlon
556e06426e Further work on the slow migration to a cycle accurate 6502 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-03 01:04:12 +00:00
Adrian Conlon
6c582f6349 Add a working(ish) 6502 ATX implementation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-30 17:12:45 +00:00
Adrian Conlon
5ade05a689 Add a bunch of undocumented 6502 instructions. Abandoned ATX implementation. Too poorly documented. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-30 12:01:23 +00:00
Adrian Conlon
815c99710a Add enough undocumented 6502 instructions to get through "nestest". 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-29 22:22:31 +00:00
Adrian Conlon
c136b306ab Use the new busRead/Write processor methods to simplify the 6502 cycle counting. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-29 22:18:01 +00:00
Adrian Conlon
adb60a6e90 Port the 6502 to the new bus architecture. 2018-12-29 19:40:02 +00:00
Adrian Conlon
d6ebf00ccc Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2018-12-01 16:46:06 +00:00
Adrian Conlon
679275e930 Correct Linux build errors. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2018-12-01 16:41:39 +00:00
Adrian Conlon
dc477cd050 Use explicit enumeration types (improves type safety) where appropriate. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-01 15:24:29 +00:00
Adrian Conlon
a940a29283 Unify build settings across all the EightBit libraries. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-28 21:24:51 +00:00
Adrian Conlon
e156b1ff1a Correct some more compilation warnings (across the whole EightBit project). 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-25 19:02:11 +00:00
Adrian Conlon
2de467dde8 Refactor the MOS6502 core: 
* Use lambda, rather than std::bind, if reasonable
* Tidy construction
* Remove configuration etc. not needed for running Klaus Dormann 6502 tests
 2018-11-18 13:52:43 +00:00
Adrian Conlon
fdbb28828f Apply the concept of powered components to the "board" 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-11 16:48:44 +00:00
Adrian Conlon
003cea0d64 Make 6502 symbols code a little more like normal C++ 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-04 13:27:43 +00:00
Adrian Conlon
8ef5d97366 Update boost from 1.65 -> 1.68 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-04 12:58:01 +00:00
Adrian Conlon
68a785ceec Add an address masking to the memory mapping structure. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-01 23:43:29 +00:00
Adrian Conlon
7af81018c9 Modify rotate and shift instructions to be a little more understandable (6502/6809) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-01 19:47:21 +00:00
Adrian Conlon
4dc0becb74 Refactor the 6502 implementation to be a lot more like the MC6809. Hopefully show bugs in the latter a little more easily. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-31 23:29:13 +00:00
Adrian Conlon
fac2da9ac4 Start refactoring CPU cores to use C++17/14 features. (This commit covers the 6502 and Z80) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 18:41:55 +01:00
Adrian Conlon
8dbb3eafec Switch to C++17 standard in all EightBit projects. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 14:28:14 +01:00
Adrian Conlon
1b2ddd8843 Don't expose the bus via the CPU any more: if a component needs the bus, it should be prepared to hold a reference to it. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-20 20:52:41 +01:00
Adrian Conlon
337e35ca1b Use the newly added CPU pokeWord method. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 20:39:09 +01:00
Adrian Conlon
fe3794e011 Simplify register16_t usage a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-16 12:00:29 +01:00
Adrian Conlon
7d840f1a42 Modifying the manner in which memory is mapped, allows a fairly clean mechanism for loading Intel "hex" files. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-15 14:35:59 +01:00
Adrian Conlon
97272d650d Simplify processor bus access a little by further allowing register16_t address access. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-29 13:52:25 +01:00
Adrian Conlon
a8cc289149 Whoops: The "Bus" class *really* isn't allowed to know the "endianness" of the attached processor! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-27 11:27:33 +01:00
Adrian Conlon
735f70e717 Remove a couple of unused headers from the 6502 processor. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-26 19:06:00 +01:00