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Author SHA1 Message Date
Adrian Conlon
a37601df67 Correct recently introduced IO implementation issues in the 8080 core. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2020-02-13 09:17:52 +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
dc37d61797 Tidy up some shared code for the Z80 pushWord vs call timing. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-12-29 13:03:44 +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
feee7ec2e6 Add some more Z80 documentation 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-12-29 01:13:52 +00:00
Adrian Conlon
f9cc29f72e Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-11-19 23:06:19 +00:00
Adrian Conlon
98d9199f19 Whoops: missed power on state of the "RFRSH" pin. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-19 23:06:08 +00:00
Adrian Conlon
cb502bd65d Halt is of course an "output" pin. (So that the halt instruction can work) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-19 23:05:27 +00:00
Adrian Conlon
3a49a9cc59 Use simpler LR35902 CPU/render sequence. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-18 00:54:52 +00:00
Adrian Conlon
43cf7e523b Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 
# Conflicts:
#	Z80/src/Z80.cpp
 2019-11-16 23:41:04 +00:00
Adrian Conlon
195b0e19bd Correct INT handling on Z80 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-16 23:38:51 +00:00
Adrian Conlon
d45c1d7d76 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-11-16 23:38:05 +00:00
Adrian Conlon
acf6cf6c71 Sync with .Net version 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-16 23:37:57 +00:00
Adrian Conlon
e670482721 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-11-12 22:40:33 +00:00
Adrian Conlon
9bc8d85795 Tidy the Z80 RES implementation a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-12 22:40:21 +00:00
Adrian Conlon
2d7f87018c Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-11-10 11:15:42 +00:00
Adrian Conlon
d9f71a5d05 Add some more gameboy documentation 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-10 11:15:30 +00:00
Adrian Conlon
5e347b9414 Sync C++ Z80 implementation with C# 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-10 11:15:07 +00:00
Adrian Conlon
a69770addd Tidy 6809 unit test project 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-10 11:14:00 +00:00
Adrian Conlon
1db68a72a7 Update to latest Catch2 testing framework. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-10 11:13:23 +00:00
Adrian Conlon
dc91df1177 Some mild reformatting of the Gaming class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-09 23:01:58 +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
20ebbd4048 Start added more .net compatibility methods 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-03 09:23:28 +00:00
Adrian Conlon
6d90ea6237 Add MREQ (to go along with IORQ) to the Z80 implementation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-02 17:38:20 +00:00
Adrian Conlon
687df0023a Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-11-02 17:30:16 +00:00
Adrian Conlon
238ee30b3c Correct a couple of small Z80 power on issues. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-02 17:30:03 +00:00
Adrian Conlon
b95614c65d Correct a couple of small issues in the Z80 disassembler. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-11-02 17:29:21 +00:00
Adrian Conlon
62d71e44bf Upgrade to latest version of boost (1.71.0) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-10-13 00:13:35 +01:00
Adrian Conlon
717b0c70ad Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2019-10-12 23:15:57 +01:00
Adrian Conlon
be79b5661f Update to latest SDL2 (2.10.0) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-10-12 23:15:47 +01:00
Adrian Conlon
411fc5fe6a Update to latest version of boost (1.71.0) 2019-10-12 23:15:28 +01:00
Adrian Conlon
b14663a264 Update to SDL2 2.0.10 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-10-11 18:39:53 +01:00
Adrian Conlon
89fae1cb6f Tidy the Gaming library a little: 
*) Add an SDLWrapper class to control the lifetime of SDL_Init/SDL_Quit
*) Pass FPS as a float, rather than int
*) Allow the key and button handlers to show whether an event was handled or not
*) Add a full screen render option (F12)
*) Use smart pointers in the GameController class

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-10-01 23:54:48 +01:00
Adrian Conlon
1577455a67 Add support for joystick controller pads (especially DPad) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-29 19:12:09 +01:00
Adrian Conlon
d8e4853971 Reorder the vertical blank raster lines a little to make it easier to use... 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-29 11:36:17 +01:00
Adrian Conlon
74ab3d0f01 Split CPU raster display time from vertical blank time. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-29 01:46:56 +01:00
Adrian Conlon
7a6e0eafcd Modifications to allow gaming class to be used with Space Invaders emulator 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-29 00:27:45 +01:00
Adrian Conlon
4afe6b6378 For convenience, add a very lightweight SDL wrapper to the EightBit library. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-28 14:29:44 +01:00
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
1ba238bfc7 Add support for RD and WR lines to the Z80 emulator. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-15 01:35:57 +01:00
Adrian Conlon
6d6c95f695 Fix up INT and NMI pin (M1 and IORQ) response a little (still working on ZX81 emulator!) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-14 23:38:47 +01:00
Adrian Conlon
4be4a0603e Refactor the Z80 implementation to: 
a) Simplify M1 handling
b) Reuse subtract/add implementations
c) Simplify conditional code blocks.

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-14 15:04:46 +01:00
Adrian Conlon
74f70af758 Correct more Z80 disassembler problems (the ZX81 seems to use every instruction available!) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-08 21:27:35 +01:00
Adrian Conlon
3e12ba6200 Sigh: Another Z80 interrupt related bug fix. Avoid a loop when an INT occurs, but interrupts are disabled. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-08 16:28:19 +01:00
Adrian Conlon
0e8813cdf3 Show more state information for debugging output. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-07 23:57:17 +01:00
Adrian Conlon
def89dbcce Correct accidental setting of PC to 0x0001 on power on. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-09-07 11:14:38 +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
e1f22f6903 Make it slightly easier to call individual opcodes from external control. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-31 08:45:04 +01:00
Adrian Conlon
f48f1d559e Move all Intel derived processors over to the simpler "HALT" method. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-29 08:57:30 +01:00
Adrian Conlon
4f47f3fc4d Simplifying the Z80 halt implementation looks better. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-29 08:51:15 +01:00