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211 Commits

Author SHA1 Message Date
Adrian Conlon
dca2e1bb8e Bring the C++ code a little closer to the C# code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-06-02 12:12:04 +01:00
Adrian Conlon
2c23289caa Expose the clock tick as an externally driven action. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-05-05 10:28:24 +01:00
Adrian Conlon
934a1f7025 Use the virtual methods, busRead and busWrite for all processor bus actions. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-02 21:58:34 +00:00
Adrian Conlon
382ae30d32 Correct a couple of minor mistakes found while working on the .net port. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-03 00:46:49 +00:00
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
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
9755a5fcd2 Add the concept of a clocked chip 2019-01-10 22:23:51 +00:00
Adrian Conlon
71daf6aa38 Split Chip class into Device and Chip. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-10 20:44:16 +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
5b9c348ff1 Remove nodiscard instance where we're using the method for cycle/memory accuracy. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-01-06 11:10:05 +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
f38d326ca7 Improve the flexibility of the BUS mapping/read/write architecture. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-12-29 19:17:36 +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
9960ad6012 Tidy return parameter usage a little within the EightBit library. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-29 00:09:40 +00:00
Adrian Conlon
deb9a6d43c Correct more analysis problems. No functional changes. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-28 21:27:14 +00:00
Adrian Conlon
a673a64c3f Lots of various changes suggested by the code analysis tools. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-27 22:36:54 +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
887b89308a Ensure virtual methods are no longer defined inline. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-25 10:43:51 +00:00
Adrian Conlon
000b254d2a Tidy some white space issues a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-24 10:56:36 +00:00
Adrian Conlon
e2e7fd0e00 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2018-11-16 23:50:04 +00:00
Adrian Conlon
5530522f11 Correct a couple of small issues 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-16 23:49:52 +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
e688411cb9 Refactor memory related code a little to make the hierarchy of classes a little easier to understand. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-04 16:38:57 +00:00
Adrian Conlon
9132f2028f Add an "UnusedMemory" class to better allow "gaps" in the memory map. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-03 23:11:48 +00:00
Adrian Conlon
984626a331 Introduce the concept of a MemoryInterface to the EightBit library. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-03 22:15:17 +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
62f3cd717b First set of C++17/14 changes to the core library 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 17:30:23 +01:00
Adrian Conlon
4bfb264380 Simplify chip pin level matching a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-21 19:42:20 +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
7e527ff093 Add Processor::pokeWord to define an endian specific 16-bit word write. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 10:05:43 +01:00
Adrian Conlon
8d3551e681 Refactor bit set/get routines from processor class to lower level chip class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-29 14:08:44 +01:00
Adrian Conlon
d77c2a1e9d Add more of the MC6850 internals. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-23 20:31:55 +01:00
Adrian Conlon
754fc8e6a3 Refactor the processor class to give us a "Chip" class that gives up pin levels and power. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-23 13:10:58 +01:00
Adrian Conlon
7adefd380a Sort a bunch of missing argument const specifications. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-21 00:16:00 +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
6256d0bf8d Correct compilation warnings. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-09-15 18:33:33 +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
dfc4c49454 Correct 5-bit sign extension on the 6809 processor. Allows CLR 5-bit offset indexed disassembly to work correctly. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-27 12:57:44 +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
c03d8488b5 Allow memory peek as a const operation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-26 13:06:05 +01:00
Adrian Conlon
8823bb6610 Refactor the *EndianProcessor classes, such that their implementation is no longer in header files. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-25 22:51:56 +01:00
Adrian Conlon
1212e8d4f0 Tidy some processor virtual specifications. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-25 13:35:53 +01:00
Adrian Conlon
c105ee37bf Have a stab at sorting out processor pin handling. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-25 12:09:26 +01:00
Adrian Conlon
6d4223c368 Start moving towards reset being just another style of interrupt. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-25 01:34:30 +01:00
Adrian Conlon
2a3b0a5291 Add JMP and JSR instructions to the 6809 processor. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-21 18:10:38 +01:00
Adrian Conlon
15e1258f40 Rearrange the 6809 code such that I can fire memory events. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-19 00:55:59 +01:00
Adrian Conlon
ab1d84703b Add a skeletal 6809 processor. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-19 00:18:08 +01:00
Adrian Conlon
51e6adc5f4 Whoops: remove Rom.h 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-19 00:09:00 +01:00
Adrian Conlon
cc64e114a9 Start refactoring the processor classes to allow big/little endian processors to be specified. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-17 21:53:49 +01:00
Adrian Conlon
ed76038bfa More memptr adjustments 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-17 13:59:59 +01:00
Adrian Conlon
1abe3ae456 Adding a couple of const member accessors allows some event handlers to be marked const 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-12 17:08:03 +01:00
Adrian Conlon
70c70af969 Sort out some exception and member initialisation rules. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-11 21:19:19 +01:00
Adrian Conlon
b640da1910 Add some noexcept specifications. Just to experiment. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-07 23:06:15 +01:00
Adrian Conlon
e40240694f More removal of duplicated code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-24 22:33:02 +01:00
Adrian Conlon
cac871cf2b Remove duplicated code (from const definitions) the performance benefit isn't worth the amount of duplicated code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-24 20:58:20 +01:00
Adrian Conlon
67487b5b6e Simplify the usage of the register16_t union. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-16 00:55:32 +01:00
Adrian Conlon
fbf098ae00 Simplify memory event handlers and ROM recognition a little (bit of speed difference) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-10 22:00:52 +01:00
Adrian Conlon
3e854c7c49 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>
 2018-06-10 00:40:56 +01:00
Adrian Conlon
116f9961c4 Add a higher/lower nibble mask 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-05-25 22:36:10 +01:00
Adrian Conlon
3e87f8a191 Whoops: correct parity definition 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-05-02 03:31:05 +01:00
Adrian Conlon
0b2c1fa084 Gameboy, some random tidy ups. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-05-02 02:47:47 +01:00
Adrian Conlon
9de0f597f6 Remove some "tricksy" code from the Z80 emulator chain. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-04-14 09:39:06 +01:00
Adrian Conlon
d818095815 MEMPTR is really only a concept of Intel style processors. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-03-18 22:40:23 +00:00
Adrian Conlon
45dc274167 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>
 2018-03-10 01:53:57 +00:00
Adrian Conlon
adf506a41e 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>
 2018-02-25 19:48:01 +00:00
Adrian Conlon
7f501ff29c Temporarily perhaps, reintroduce post-read and pre-write bus events (for the NES) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-02-07 23:00:38 +00:00
Adrian Conlon
9524cf4c6b Adjust memory loaders, to allow easier usage (default arguments) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-25 22:24:08 +00:00
Adrian Conlon
21bd8a06e6 Power on conditions are chip specific and *not* directly related to construction/destruction. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-18 17:50:15 +00:00
Adrian Conlon
29edc46966 Simplify some MEMPTR usage in Intel processors. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-10 23:08:14 +00:00
Adrian Conlon
108f66632e Performance: watch out for unnecessary virtualised methods. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-06 17:13:02 +00:00
Adrian Conlon
d4782a66db Some small changes for NES support: hopefully not broken anything! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-26 22:46:16 +00:00
Adrian Conlon
637c0c68fa Correct a couple of merge issues. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-12 23:12:45 +00:00
Adrian Conlon
c8dd6e7267 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 
# Conflicts:
#	inc/EightBitCompilerDefinitions.h
 2017-12-12 23:08:34 +00:00
Adrian Conlon
c5b7b06e59 Whoops: correct macro expansion. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-12 23:05:54 +00:00
Adrian Conlon
697bfb636d A more succinct definition of the LR35902 interrupt mechanism. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-12 22:29:37 +00:00
Adrian Conlon
1edabd79f3 More pinout oriented method of executing instructions (especially interrupts) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-10 21:41:48 +00:00
Adrian Conlon
4f5e231dc4 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2017-12-02 23:55:44 +00:00
Adrian Conlon
7e3957d4db Rewrite i8080 interrupts to be more closely related to the hardware. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-02 23:50:59 +00:00
Adrian Conlon
def14493cb Allow fallback for where intrinsics aren't available. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-02 19:01:07 +00:00
Adrian Conlon
d70f6b375b Ensure each header file has a newline on its own at the end of each file. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 23:19:17 +00:00
Adrian Conlon
12385dcc6f More clang warnings corrected. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 23:15:40 +00:00
Adrian Conlon
4b2d84dba3 Whoops: missed clang warning. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 16:55:10 +00:00
Adrian Conlon
a0f7d584b6 Correct a few warnings reported by "clang" 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 14:37:18 +00:00
Adrian Conlon
f50c83ad36 Whoops: missed GCC problem. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-20 20:54:17 +00:00
Adrian Conlon
c513f0cab1 GSL was too problematic when used with GCC. Removed. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-20 19:17:49 +00:00
Adrian Conlon
67c27d4a3e GSL + CPP core guidelines changes. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-18 14:29:30 +00:00
Adrian Conlon
47446a617d the "run" method is probably better off not being overridden. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-11 15:50:55 +00:00
Adrian Conlon
0b6ef3d4dd VS2017 and CPP core guidelines updates 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-11 15:13:26 +00:00
Adrian Conlon
d010e3ca2f Start incorporating CPP core guidelines (as an experiment!) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-10 22:41:50 +00:00
Adrian Conlon
8143f8a506 Try to correct "one definition rule" problems: 
1) No forward declarations
2) No virtual methods defined inline.

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-05 12:47:42 +00:00
Adrian Conlon
926ac48224 Move to VS2017 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-04 23:15:55 +00:00
Adrian Conlon
c292fb552e A whole bunch of consistency changes. No functional changes. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-03 22:05:01 +00:00
Adrian Conlon
a22e59546b 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>
 2017-10-24 00:04:13 +01:00
Adrian Conlon
daa8eabb49 Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2017-10-22 21:37:21 +01:00
Adrian Conlon
fa03e8dc55 Simplify I/O port event handling. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-10-22 21:31:20 +01:00
Adrian Conlon
90b0673259 Correct a couple of header file issues in the base EightBit library 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-10-22 21:24:28 +01:00
Adrian Conlon
10913bf1b8 Remove some unused signals. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-10-01 22:22:25 +01:00