diff options
author | 2020-05-25 16:42:42 +0200 | |
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committer | 2020-05-25 16:42:57 +0200 | |
commit | 22513fb6fe281f5ccb75aaddb6417a12a66c313d (patch) | |
tree | 3cf84032cc6482d685a8dbb57e015bd17c7f7fdc /src/devices/cpu/ccpu/ccpu.cpp | |
parent | e42c2d2874cf9c1092c01ab5ce9ef997d465ce25 (diff) |
emumem: A little more speedup. cache and specific change syntax, and are not pointers anymore [O. Galibert]
The last(?) two changes are:
- Add a template parameter to everything (theoretically the address
space width, in practice a level derived from it to keep as much
compatibility between widths as possible) so that the shift size
becomes a constant.
- Change the syntax of declaring and initializing the caches and
specifics so that they're embedded in the owner device. Solves
lifetime issues and also removes one indirection (looking up the base
dispatch pointer through the cache/specific pointer).
Diffstat (limited to 'src/devices/cpu/ccpu/ccpu.cpp')
-rw-r--r-- | src/devices/cpu/ccpu/ccpu.cpp | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/src/devices/cpu/ccpu/ccpu.cpp b/src/devices/cpu/ccpu/ccpu.cpp index 52c235abc5c..55bba0dd96e 100644 --- a/src/devices/cpu/ccpu/ccpu.cpp +++ b/src/devices/cpu/ccpu/ccpu.cpp @@ -23,13 +23,13 @@ DEFINE_DEVICE_TYPE(CCPU, ccpu_cpu_device, "ccpu", "Cinematronics CPU") MACROS ***************************************************************************/ -#define READOP(a) (m_cache->read_byte(a)) +#define READOP(a) (m_cache.read_byte(a)) -#define RDMEM(a) (m_data->read_word((a) & 0xfff)) -#define WRMEM(a,v) (m_data->write_word((a), (v))) +#define RDMEM(a) (m_data.read_word((a) & 0xfff)) +#define WRMEM(a,v) (m_data.write_word((a), (v))) -#define READPORT(a) (m_io->read_byte(a)) -#define WRITEPORT(a,v) (m_io->write_byte((a), (v))) +#define READPORT(a) (m_io.read_byte(a)) +#define WRITEPORT(a,v) (m_io.write_byte((a), (v))) #define SET_A0 do { m_a0flag = m_A; } while (0) #define SET_CMP_VAL(x) do { m_cmpacc = *m_acc; m_cmpval = (x) & 0xfff; } while (0) @@ -107,10 +107,10 @@ void ccpu_cpu_device::device_start() m_vector_callback.resolve(); assert(!m_vector_callback.isnull()); - m_program = &space(AS_PROGRAM); - m_cache = m_program->cache<0, 0, ENDIANNESS_BIG>(); - m_data = &space(AS_DATA); - m_io = &space(AS_IO); + space(AS_PROGRAM).cache(m_cache); + space(AS_PROGRAM).specific(m_program); + space(AS_DATA).specific(m_data); + space(AS_IO).specific(m_io); save_item(NAME(m_PC)); save_item(NAME(m_A)); |