Commit Graph

23 Commits

Author SHA1 Message Date
Adrian.Conlon
c0c969c560 Use a z80 style instruction decoder for the i8080 emulator. 2017-07-24 22:00:49 +01:00
Adrian.Conlon
8f18a128cd First step of moving to an instruction decoder, rather than a lookup table.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-22 23:52:58 +01:00
Adrian.Conlon
9a264c7c06 Bring the LR35902 and i8080 increment/decrement implementations in line with the Z80.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-22 10:23:13 +01:00
Adrian.Conlon
36fbee35fb Bring the various IntelProcessor derived processors a little closer together.
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-07-19 13:59:28 +01:00
Adrian.Conlon
3c0a1697fd Fetching bytes/words and stack access are more processor specific than I thought.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-07 09:27:06 +01:00
Adrian.Conlon
6af1857cb0 A few minor consistency tweaks to the i8080 and z80 processors.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-07-02 17:38:19 +01:00
Adrian.Conlon
af375ab10f Some more shared code.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-22 19:00:53 +01:00
Adrian.Conlon
f776379e96 Share flag adjustments across implementations using templated methods.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-22 16:57:38 +01:00
Adrian.Conlon
052df61250 Remove get/getWord and set/setWord from memory class. Just use address and data lines on the memory.
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-20 14:09:44 +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
23108a8536 Bring performance back to par by: inlining and static flag register access, where possible.
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-18 18:14:39 +01:00
Adrian.Conlon
5f288cf0e3 Some more small tidy ups.
Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
2017-06-16 20:31:32 +01:00
Adrian.Conlon
327d391ecb Remove another chunk of shared code. This time by ensuring the basic layout of registers is consistent.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-16 13:52:10 +01:00
Adrian.Conlon
c52f0a36aa Small performance change to 8080 reserved flags.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-16 13:35:08 +01:00
Adrian.Conlon
675b82b5af Move to a more standard flag representation for the 8080 2017-06-16 01:58:12 +01:00
Adrian.Conlon
e6eab35d0e Correct a couple of warnings in the 8080 code
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-14 20:13:37 +01:00
Adrian.Conlon
66d3a5ae29 Couple of small simplifications.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-13 23:43:21 +01:00
Adrian.Conlon
0291970427 Further work on uniting the 8080 family processor family.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-11 21:08:40 +01:00
Adrian.Conlon
627e41bf35 Introduce an IntelProcessor base class to allow known good implementation to be shared.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-11 09:45:34 +01:00
Adrian.Conlon
d8977d32d3 More MEMPTR clarifications.
This time to avoid temporary variables, in a similar manner to Z80 hardware.

Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-07 22:54:55 +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
3325b07a28 Ensure we use the pre-constructed I/O ports object.
Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>
2017-06-04 22:59:56 +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