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119 Commits

Author SHA1 Message Date
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
3a4235f651 Whoops: The NMI line needs to be powered on by individual processors now it's no longer part of the Processor base class. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-25 22:50:18 +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
677b9a608e Default a couple of project configuration options. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-17 14:02:00 +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
256e25e344 Tidy up the test suite usage between the 8080 and Z80 processors. 2018-08-12 16:30:32 +01:00
Adrian Conlon
228301573e Refactor Z80 block in/out routines. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-08-12 16:25:30 +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
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
757d8f3c32 Reduce code density a little. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-16 10:09:28 +01:00
Adrian Conlon
7d25962f3c Remove commented block. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-16 09:56:16 +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
7cb5e137f4 Some small simplifications of the 16-bit arithmetic operators. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-11 23:01:48 +01:00
Adrian Conlon
2d8c3d4b12 Simplify AF usage. Keeps speed roughly as before 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-06-11 00:50:46 +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
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
4b4f6b1a49 Some *small* consistency changes. Perhaps some performance gains. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-04-11 23:53:26 +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
97a121b8d4 Unneeded UNREACHABLEs can cause gcc to produce problematic code. TBC 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-03-17 23:34:27 +00:00
Adrian Conlon
dac58b121a More small tidyups in the core emulator set. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-03-12 01:22:28 +00:00
Adrian Conlon
bebc68539b Correct sneaky reference passing in heavily used method. (~205Mhz emulated speed) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-03-10 10:53:11 +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
c6eb68ba13 Further return by value, rather than reference. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-02-26 19:47:35 +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
d34b161255 Simplify some build options. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-02-19 23:18:21 +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
3bd01e211e Try to avoid so many virtual calls in the Z80 by hanging onto AF a little longer. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2018-01-09 23:30:51 +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
3d88a8f6d1 Couple of small changes in LIKELY/UNLIKELY usage. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-05 21:40:23 +00:00
Adrian Conlon
6a47f710b9 More consistency updates between i8080 and Z80. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-04 23:41:49 +00:00
Adrian Conlon
f1b3fc1932 Correct at least some of the problems with the Z80 interrupt rewrite 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-04 21:59:38 +00:00
Adrian Conlon
23f7a88480 Further 8080/Z80 interrupt rewrite 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-03 00:57:47 +00:00
Adrian Conlon
55b989fe13 More likely/unlikely macro usages. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-02 14:53:35 +00:00
Adrian Conlon
9cbf76daf2 Correct a couple of LIKELY/UNLIKELY usages. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-12-02 10:34:37 +00:00
Adrian Conlon
dc58969614 Whoops: missed Z80 test Makefile. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 15:02:58 +00:00
Adrian Conlon
033969bbe3 Add profile guided optimisation to build configuration (profile/profiled) 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-30 14:59:24 +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
11062607e6 Start sharing parts of the linux build system. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-26 22:10:17 +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
dea1847280 Unify more VS2017 build configurations 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-12 10:38:05 +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
b3114ed520 Correct some possible one definition rule issues. 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-05 14:48:15 +00:00
Adrian Conlon
7a0ebb9198 Port to VS2015 
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
 2017-11-05 14:47:38 +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