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Author SHA1 Message Date
Adrian Conlon
cec760767a Fix some problems in the MC6809 instruction decoder. 
Found by going through the switch line by line...
BASIC interpreter now seems to run!

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-20 08:51:17 +00:00
Adrian Conlon
c54c2a681b Merge branch 'master' of https://github.com/MoleskiCoder/EightBit 2018-11-18 22:16:16 +00:00
Adrian Conlon
859804d179 Refactor MC6809 core to use lambdas in preference to std::bind methods. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-18 22:15:49 +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
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
68b352d1df Wire the GameBoy board like a piece of powered hardware. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-12 00:38:03 +00:00
Adrian Conlon
e326490cd9 Correct typographical mistake in MC6850 documentation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-11 16:49:21 +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
f29c571226 Add tests for BHI BLE on the 6809 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-10 20:48:43 +00:00
Adrian Conlon
b926f4b7f1 Simplify 6809 conditionals a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-10 20:31:14 +00:00
Adrian Conlon
b82ca402bf Add 6809 BGT tests. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-10 20:30:38 +00:00
Adrian Conlon
8b12ed23e8 Add (currently disabled) disassembler to the 6809 unit test runner. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-10 20:29:27 +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
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
95968cb000 Whoops: missed boost update for LR35902 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-11-04 13:26:12 +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
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
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
b1af0710ba Tidy the Z80 instruction scheduler a little 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-28 19:29:14 +00:00
Adrian Conlon
edbc2784d9 Sort out why cycle counting wasn't working as I thought it should on the MC6809 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-28 13:34:34 +00:00
Adrian Conlon
fc7b6e49ca Slightly nicer refactoring of the MEMPTR post increment saga 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-28 13:33:36 +00:00
Adrian Conlon
b3faae34ae Correct a couple of problematic changes picked up by fuse test 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-28 09:42:04 +00:00
Adrian Conlon
99692ce6c7 Refactor MC6850 for C++14/17 updates 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 21:58:23 +01:00
Adrian Conlon
1a317c7907 C++14/17 refactoring for MC6809 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 21:55:54 +01:00
Adrian Conlon
015071fcfb Tidy up GameBoy processor (LR35902) with respect to C++14/17 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 19:23:02 +01:00
Adrian Conlon
b9ca27feb3 Refactor the Intel 8080 core for C++17/14 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-27 18:51:30 +01:00
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
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
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
b50d21965d Addr support for the RTS/CTS and IRQ pins to the MC6850 chip emulation 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-23 00:01:33 +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
3aa5b4bb91 Tidy the MC6850 transmit/receive sequence to be a little easier to read. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-21 18:09:23 +01:00
Adrian Conlon
4840c238d6 Set configuration default to *not* exit early. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-21 18:07:42 +01:00
Adrian Conlon
806251bf6f Whoops: Remove extra blank line. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-21 18:07:08 +01:00
Adrian Conlon
54e0dcfe36 Move board termination and cycle count etc. into the configuration class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-21 10:28:33 +01:00
Adrian Conlon
4d09da1541 Reuse standard 6809/6850 chip/bus wiring 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-20 22:54:10 +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
9b0cc4542f Tidy MC6809 test board/device access. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-20 16:57:32 +01:00
Adrian Conlon
dbc3e192d7 More sharing of common implementation on the MC6809. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-18 22:50:54 +01:00
Adrian Conlon
83497b0b9e Share some implementation details on the MC6809, where possible. Somewhat closer to how I imagine the hardware is implemented... 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-18 22:25:52 +01:00
Adrian Conlon
966a07b018 Reuse pul/psh definition to simplify entire register set save/restore code. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-17 20:42:03 +01:00
Adrian Conlon
4b2f8e3599 Correct "LE" definition to at least match the MC6809 documentation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-17 20:39:58 +01:00
Adrian Conlon
8c8438f819 Tidy the test code formatting a little 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 23:39:37 +01:00
Adrian Conlon
4e48f4a5a0 Slightly simplify half-carry evaluation. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 23:18:13 +01:00
Adrian Conlon
140e87485c Whoops: Correct dodgy CMP test. That explains why I never understood why it was failing! 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 21:26:33 +01:00
Adrian Conlon
9d71c78338 DEC/INC don't adjust carry flags 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-10-14 21:19:37 +01:00