6502/EightBit
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29 Commits
Author SHA1 Message Date
Adrian Conlon 6bec1d473d First stage of syncing to .net implementation. Pretty shakey, but test_Z80 runs 2026-05-22 21:42:05 +01:00
Adrian Conlon d533593a14 Lots of miscellaneous cycle accurate updates 2026-03-21 16:18:39 +00:00
Adrian Conlon 34e30682f7 Fix z80 disassembler for HarteTest 2026-02-28 14:19:03 +00:00
Adrian Conlon 3b01c639fd Some performance improvements for the Z80 disassembler 2021-12-30 00:56:24 +00:00
Adrian Conlon 22506ea56c 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>
 2021-07-18 14:28:40 +01:00
Adrian Conlon 2f76e901f9 More tidying of include files for VS2019 compatibility (plus more correct!) 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-05-29 12:18:13 +01:00
Adrian Conlon 2fa9ffd1e3 Tidy up some C++ a little 
Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
 2021-04-07 21:36:09 +01:00
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 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 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 4b0cf426b9 Add a couple of missing instructions to the disassembler (used by the ZX Spectrum ROM) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2019-08-18 17:40:18 +01:00
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 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 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 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 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 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 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 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 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 cae34d61d1 Ensure the Z80 unit tests run successfully to completion. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-09-07 01:04:09 +01:00
Adrian.Conlon 19c0b93262 Changes to the "const"ness of peek necessitate some changes. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-24 11:06:23 +01:00
Adrian.Conlon 016b3bca59 Switch to a memory read/write event driven model. All tests passing. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-08-06 17:06:48 +01:00
Adrian.Conlon 35efc86195 Simplify the use of the REFRESH register 
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
 2017-06-27 14:02:29 +01:00
Adrian.Conlon c803387023 A few modifications: 
1) Simplify REFRESH register handling via bit fields.
2) Use static methods in the Z80 emulator, if at all possible
3) Use a decoded opcode lookup, rather than decoding per instruction

Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-06-26 23:22:32 +01:00
Adrian.Conlon a4f8770eb0 Correct a couple of small compilation issues. 
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
 2017-06-19 18:08:13 +01:00
Adrian.Conlon c9bf24d1fa Tidy up register and static method access. 
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
 2017-06-19 13:53:00 +01:00
Adrian.Conlon 211c75d84d Add Z80 processor and tests. 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-06-05 22:39:15 +01:00
Adrian.Conlon 105032f08a Dump of all my C++ emulators, only Intel8080 integrated so far... 
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
 2017-06-04 21:38:34 +01:00