diff options
author | 2020-05-25 16:42:42 +0200 | |
---|---|---|
committer | 2020-05-25 16:42:57 +0200 | |
commit | 22513fb6fe281f5ccb75aaddb6417a12a66c313d (patch) | |
tree | 3cf84032cc6482d685a8dbb57e015bd17c7f7fdc /src/devices/cpu/cr16b/cr16b.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/cr16b/cr16b.cpp')
-rw-r--r-- | src/devices/cpu/cr16b/cr16b.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/devices/cpu/cr16b/cr16b.cpp b/src/devices/cpu/cr16b/cr16b.cpp index e3f330bf3f7..c9c6d414caf 100644 --- a/src/devices/cpu/cr16b/cr16b.cpp +++ b/src/devices/cpu/cr16b/cr16b.cpp @@ -18,8 +18,6 @@ DEFINE_DEVICE_TYPE(CR16B, cr16b_device, "cr16b", "CompactRISC CR16B") cr16b_device::cr16b_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor map) : cpu_device(mconfig, type, tag, owner, clock) , m_space_config("program", ENDIANNESS_LITTLE, 16, 21, 0, map) - , m_space(nullptr) - , m_cache(nullptr) , m_regs{0} , m_pc(0) , m_isp(0) @@ -53,8 +51,8 @@ device_memory_interface::space_config_vector cr16b_device::memory_space_config() void cr16b_device::device_start() { - m_space = &space(AS_PROGRAM); - m_cache = m_space->cache<1, 0, ENDIANNESS_LITTLE>(); + space(AS_PROGRAM).cache(m_cache); + space(AS_PROGRAM).specific(m_space); set_icountptr(m_icount); |