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Author SHA1 Message Date
Adrian Conlon
77a3171037 Add an MC6850 ACIA implementation (not tested, direct port of the C++ code) 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-23 00:47:27 +01:00
Adrian Conlon
6e781ced44 Some minor MC6809 tidying up 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 19:54:26 +01:00
Adrian Conlon
2a4a067fe4 Add an (untested) implementation of an Intel hex file parser to the EightBit project. Ported directly from the C++ implementation. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 16:53:55 +01:00
Adrian Conlon
0d73b588c3 Whoops: Forgot to commit the addition of the MC6809 unit test project to the EightBitNet solution. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 16:52:48 +01:00
Adrian Conlon
53a203b4a1 Correct a layout issue in the MC6809 implementation. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 16:51:53 +01:00
Adrian Conlon
4977df7330 Correct a couple of missed "readonly" specifications in the MC6809 unit tests. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 16:51:08 +01:00
Adrian Conlon
0ab5da10ef add unit tests (not complete) for 6809 processor. Fix matters arising. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-21 04:47:36 +01:00
Adrian Conlon
294c71c228 Get the MC6809 processor compiling. Still untested. 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-10 23:15:26 +01:00
Adrian Conlon
6b33d2b5a5 Add a initial port of the MC6809 processor to the .Net collection 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2019-04-10 19:51:39 +01:00
Adrian Conlon
8b67a827dd Simplify the Intel 8080 disassembler a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-17 21:07:56 +00:00
Adrian Conlon
4a0d466171 Merge branch 'master' of https://github.com/MoleskiCoder/EightBitNet 2019-03-10 11:34:40 +00:00
Adrian Conlon
00fe5eb0b2 Overloaded MemoryMapping constructor, to make life a little easier... 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-10 11:34:29 +00:00
Adrian Conlon
5b9a92c76c Correct a couple of small style issues. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-07 01:21:23 +00:00
Adrian Conlon
e80963260d Try to avoid copying around Register16 references, if possible. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-07 01:21:00 +00:00
Adrian Conlon
56f46a8236 Speed up Z80 block operations by using values rather than reference objects, if possible. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-07 00:28:39 +00:00
Adrian Conlon
2652463106 Remove default debugging from the Intel8080 test. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-03 10:45:19 +00:00
Adrian Conlon
3d2b861b56 Tidy the processor object a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-03 10:44:52 +00:00
Adrian Conlon
22cb8b142b Tidy the path to nuget packages, such that they can be used as git submodules. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-03 10:35:18 +00:00
Adrian Conlon
4799e097de Update stylecop (plus add stylecop packages to the Intel 8080 set). 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-03-02 08:59:20 +00:00
Adrian Conlon
9a1d5cc762 First commit of the Intel8080 processor core. Passes diagnostics. Runs at ~50% speed of unmanaged code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-28 00:06:35 +00:00
Adrian Conlon
12969dbef6 Use intermediate values for HL2, if possible. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-23 10:38:29 +00:00
Adrian Conlon
03caba99dc Follow most of the guideline suggestions from VS2019 preview. Pretty good suggestions! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-22 22:33:51 +00:00
Adrian Conlon
28b7a88f0f Use the correct virtual methods: BusRead and BusWrite to control bus access for Z80 a la M6502 implementation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-22 19:59:42 +00:00
Adrian Conlon
726c3fe4cc More work on minimising the effect of creating garbage collected objects. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 22:52:46 +00:00
Adrian Conlon
968b1c6545 Correct Z80 disassembler format issue. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 22:51:42 +00:00
Adrian Conlon
27e1c5c9f8 Make Register16 a class, rather than struct. Tricky, but a bit faster than before. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 19:58:49 +00:00
Adrian Conlon
b7fbb80018 Add an extra couple of blank lines to separate the information messages in the test harness. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 01:11:07 +00:00
Adrian Conlon
c0aa7c5ff5 Correct a few small mistakes in the Z80 emulation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 01:10:17 +00:00
Adrian Conlon
c7feb58815 Correct a Z80 compare mistake: the result of the implied subtraction shouldn't be applied to the flags register! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 00:02:31 +00:00
Adrian Conlon
900ac02869 Tidy up a stylecop suggestion. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-21 00:01:36 +00:00
Adrian Conlon
42d7095dab Make the Z80 disassembly more compatible with the unmanaged disassembler. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 23:52:59 +00:00
Adrian Conlon
53cdc614a2 Mask the Z80 refresh register correctly 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 23:51:50 +00:00
Adrian Conlon
f0d5751949 Fix Z80 LDIR 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 22:35:22 +00:00
Adrian Conlon
46a12a2b7a Make the Z80 test harness mostly functional. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 22:23:58 +00:00
Adrian Conlon
1292163837 Improve the Z80 disassembler: now does mostly good disassemblies. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 22:23:29 +00:00
Adrian Conlon
28516bbc84 Rename the M6502 disassembler class to something a little better grammatically. 2019-02-20 22:21:14 +00:00
Adrian Conlon
4ee184eaf4 Improve the readability of branch instructions in the M6502 processor implementation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 22:19:38 +00:00
Adrian Conlon
c400f37201 Improve the debugging visibility of the Register16 class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-20 22:17:54 +00:00
Adrian Conlon
01ce926574 Start adding Z80 test harness and update package configurations. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-19 00:58:17 +00:00
Adrian Conlon
5714798756 Lots of stylecop encouraged changes. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-19 00:56:16 +00:00
Adrian Conlon
23489b7127 Interesting, makes pretty much no difference to just calculate 16 bit values, rather than relying on byte layout. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-18 22:28:20 +00:00
Adrian Conlon
9ac2c53685 The m6502 intermediate variable should really be of type Register16 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-18 22:14:11 +00:00
Adrian Conlon
999bdf71ff Add some basic runtime timings to the 6502 TestHarness class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-18 00:54:02 +00:00
Adrian Conlon
a144cf19a1 Whoops: missed bus read/write clock ticks in the 6502 emulator. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-18 00:52:45 +00:00
Adrian Conlon
ea82c58777 Add Z80 processor (untested, but complete) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-16 21:32:34 +00:00
Adrian Conlon
3108a373d7 Interesting: in profiling, creating the mapping object was one of the major bottlenecks, when running the M6502 test suite. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-15 09:10:27 +00:00
Adrian Conlon
219d65a57a No need to use LowByte/HighByte methods in Register16 construction: that's what it's layout is for. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-15 09:08:44 +00:00
Adrian Conlon
c6a7003b8d Help out callers using Register16 arguments a little: Don't always require the ".Word" property to be passed. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-15 00:26:01 +00:00
Adrian Conlon
cf4e633034 Implement some suggestions from the code analysis. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-14 23:51:32 +00:00
Adrian Conlon
63db46a7bc Resurrect the Register16 class. This (or something *very* much like it) is going to be necessary to add a Z80 emulator (reference access to the high/low parts of 16-bit registers). 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-02-14 23:01:31 +00:00