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/i86/i86.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/i86/i86.cpp')
-rw-r--r-- | src/devices/cpu/i86/i86.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/devices/cpu/i86/i86.cpp b/src/devices/cpu/i86/i86.cpp index 8f9697cb97d..50d2039569a 100644 --- a/src/devices/cpu/i86/i86.cpp +++ b/src/devices/cpu/i86/i86.cpp @@ -470,11 +470,11 @@ void i8086_common_cpu_device::device_start() m_opcodes = has_space(AS_OPCODES) ? &space(AS_OPCODES) : m_program; if(m_opcodes->data_width() == 8) { - auto cache = m_opcodes->cache<0, 0, ENDIANNESS_LITTLE>(); - m_or8 = [cache](offs_t address) -> u8 { return cache->read_byte(address); }; + m_opcodes->cache(m_cache8); + m_or8 = [this](offs_t address) -> u8 { return m_cache8.read_byte(address); }; } else { - auto cache = m_opcodes->cache<1, 0, ENDIANNESS_LITTLE>(); - m_or8 = [cache](offs_t address) -> u8 { return cache->read_byte(address); }; + m_opcodes->cache(m_cache16); + m_or8 = [this](offs_t address) -> u8 { return m_cache16.read_byte(address); }; } m_io = &space(AS_IO); |