Adrian Conlon
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b22d7e47e5
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Addressing mode simplifications
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2024-03-14 14:54:52 +00:00 |
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Adrian Conlon
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0ca0e1da36
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Optimisation: the NOP is meaningless
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2022-07-13 07:44:47 +01:00 |
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Adrian Conlon
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8e0092ec9d
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Tidy up noexcept specification
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2022-01-17 19:10:15 +00:00 |
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Adrian Conlon
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945fcefb36
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Start adding comparison operations to EightBit classes
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2021-12-27 14:24:38 +00:00 |
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Adrian Conlon
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22506ea56c
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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>
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2021-07-18 14:28:40 +01:00 |
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Adrian Conlon
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2f76e901f9
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More tidying of include files for VS2019 compatibility (plus more correct!)
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2021-05-29 12:18:13 +01:00 |
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Adrian Conlon
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4dd3106af0
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Tidy up some C++ issues in GameBoy emulator
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2021-03-08 16:42:01 +00:00 |
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Adrian Conlon
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d785b1eae7
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Simplify LR35902 machine timing.
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2020-11-13 17:28:35 +00:00 |
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Adrian Conlon
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eb761bc62f
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LR35902: Whoops: correct broken timer (when it begins at zero!)
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-13 14:50:12 +00:00 |
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Adrian Conlon
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fa7e1480d3
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LR35902: Fix lots of timing issues by attaching to the "tick" event.
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-13 10:14:06 +00:00 |
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Adrian Conlon
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efed7dae23
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LR35902 Simplify timing mechanism (corrects some timing issues as well!)
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-12 18:21:51 +00:00 |
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Adrian Conlon
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b8a2db96f4
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Include interrupt information in the disassembler output.
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-12 16:22:44 +00:00 |
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Adrian Conlon
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f7da03d46b
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Bring the LR35902 code to be more like the Z80
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-09 11:48:59 +00:00 |
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Adrian Conlon
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759b4a9fa8
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GameBoy: Correct a few (very minor C++) niggles in the implementation. No functional changes.
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
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2020-11-07 09:41:12 +00:00 |
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Adrian Conlon
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c8bdabf34f
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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>
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2020-02-09 11:51:58 +00:00 |
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Adrian Conlon
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d9466082ec
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M-Cycle accurate Z80 modifications.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-12-29 01:18:54 +00:00 |
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Adrian Conlon
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d0467421ff
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Improve compatibility with .net emulator code.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-11-09 18:58:23 +00:00 |
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Adrian Conlon
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f48f1d559e
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Move all Intel derived processors over to the simpler "HALT" method.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-08-29 08:57:30 +01:00 |
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Adrian Conlon
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9f404d46a4
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The LR35902 instruction set doesn't really need the "bit" instruction to return a value.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-07-21 11:25:56 +01:00 |
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Adrian Conlon
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934a1f7025
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Use the virtual methods, busRead and busWrite for all processor bus actions.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-03-02 21:58:34 +00:00 |
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Adrian Conlon
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f0376fa81e
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Use macros to define our device pins.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-01-14 23:17:54 +00:00 |
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Adrian Conlon
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68030610d8
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Move to an event driven clock tick event for all CPUs
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2019-01-09 23:24:33 +00:00 |
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Adrian Conlon
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f38d326ca7
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Improve the flexibility of the BUS mapping/read/write architecture.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-12-29 19:17:36 +00:00 |
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Adrian Conlon
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e156b1ff1a
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Correct some more compilation warnings (across the whole EightBit project).
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-11-25 19:02:11 +00:00 |
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Adrian Conlon
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015071fcfb
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Tidy up GameBoy processor (LR35902) with respect to C++14/17
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-10-27 19:23:02 +01:00 |
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Adrian Conlon
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17c46264e9
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Match the GameBoy code to the updated handling of reset (etc.) interrupts.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-25 01:57:22 +01:00 |
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Adrian Conlon
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6d4223c368
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Start moving towards reset being just another style of interrupt.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-25 01:34:30 +01:00 |
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Adrian Conlon
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ed76038bfa
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More memptr adjustments
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-17 13:59:59 +01:00 |
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Adrian Conlon
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70c70af969
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Sort out some exception and member initialisation rules.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-11 21:19:19 +01:00 |
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Adrian Conlon
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feb5e7ad60
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Simplifications carried over from the Z80 implementation.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-06-23 16:43:05 +01:00 |
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Adrian Conlon
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67487b5b6e
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Simplify the usage of the register16_t union.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-06-16 00:55:32 +01:00 |
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Adrian Conlon
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3e854c7c49
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Const some more bus/processor usage, and ensure the data bus is a member, not a reference to memory.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-06-10 00:40:56 +01:00 |
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Adrian Conlon
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0b2c1fa084
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Gameboy, some random tidy ups.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-05-02 02:47:47 +01:00 |
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Adrian Conlon
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4b4f6b1a49
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Some *small* consistency changes. Perhaps some performance gains.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-04-11 23:53:26 +01:00 |
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Adrian Conlon
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45dc274167
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Get rid of wrappers for bus access: i.e. make it clearer where the bus is being read/written.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-03-10 01:53:57 +00:00 |
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Adrian Conlon
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adf506a41e
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Optimisation: Prefer return by value to return by reference. ~10% speed-up!
Just watch a video by Chandler Carruth from 2015, where he talked about C++ optimisers...
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-02-25 19:48:01 +00:00 |
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Adrian Conlon
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29edc46966
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Simplify some MEMPTR usage in Intel processors.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-01-10 23:08:14 +00:00 |
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Adrian Conlon
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697bfb636d
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A more succinct definition of the LR35902 interrupt mechanism.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-12 22:29:37 +00:00 |
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Adrian Conlon
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a1c753d63e
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Couple of small tidy ups on the LR35902 implementation.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-10 21:57:32 +00:00 |
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Adrian Conlon
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1edabd79f3
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More pinout oriented method of executing instructions (especially interrupts)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-10 21:41:48 +00:00 |
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Adrian Conlon
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23f7a88480
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Further 8080/Z80 interrupt rewrite
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-12-03 00:57:47 +00:00 |
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Adrian Conlon
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c18aeb9e63
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More updates from the CPP core guidelines
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-11-11 11:12:09 +00:00 |
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Adrian Conlon
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c292fb552e
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A whole bunch of consistency changes. No functional changes.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-11-03 22:05:01 +00:00 |
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Adrian Conlon
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a22e59546b
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Tidy the gameboy core a little. Mainly by moving the execution loops into the bus class.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-24 00:04:13 +01:00 |
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Adrian Conlon
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94604b355d
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Tidy up include file usage.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-19 22:43:09 +01:00 |
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Adrian Conlon
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156cb66904
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Split the bus into IoRegisters and "the rest"
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-05 11:24:36 +01:00 |
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Adrian Conlon
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c21d66eba4
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Correct both a linux warning, and some timing anomalies.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-02 20:54:38 +01:00 |
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Adrian Conlon
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18d74b6f13
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More linux changes
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-02 20:29:16 +01:00 |
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Adrian Conlon
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d2c3efac83
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More linux fixes.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-02 17:30:46 +01:00 |
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Adrian Conlon
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44ff68d6f3
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First part of gb linux port.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2017-10-02 16:47:05 +01:00 |
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