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/sound/ks0164.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/sound/ks0164.cpp')
-rw-r--r-- | src/devices/sound/ks0164.cpp | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/src/devices/sound/ks0164.cpp b/src/devices/sound/ks0164.cpp index 3c88e69b7a2..e56c7c8dce0 100644 --- a/src/devices/sound/ks0164.cpp +++ b/src/devices/sound/ks0164.cpp @@ -51,7 +51,7 @@ void ks0164_device::device_start() } m_stream = stream_alloc(0, 2, clock()/3/2/2/32); - m_mem_cache = space().cache<1, 0, ENDIANNESS_BIG>(); + space().cache(m_mem_cache); m_timer = timer_alloc(0); save_item(NAME(m_bank1_base)); @@ -176,32 +176,32 @@ void ks0164_device::mpu401_w(u8 data) u16 ks0164_device::vec_r(offs_t offset, u16 mem_mask) { - return m_mem_cache->read_word(offset << 1, mem_mask); + return m_mem_cache.read_word(offset << 1, mem_mask); } u16 ks0164_device::rom_r(offs_t offset, u16 mem_mask) { - return m_mem_cache->read_word((offset << 1) + 0x80, mem_mask); + return m_mem_cache.read_word((offset << 1) + 0x80, mem_mask); } u16 ks0164_device::bank1_r(offs_t offset, u16 mem_mask) { - return m_mem_cache->read_word(((offset << 1) & 0x3fff) | m_bank1_base, mem_mask); + return m_mem_cache.read_word(((offset << 1) & 0x3fff) | m_bank1_base, mem_mask); } void ks0164_device::bank1_w(offs_t offset, u16 data, u16 mem_mask) { - m_mem_cache->write_word(((offset << 1) & 0x3fff) | m_bank1_base, data, mem_mask); + m_mem_cache.write_word(((offset << 1) & 0x3fff) | m_bank1_base, data, mem_mask); } u16 ks0164_device::bank2_r(offs_t offset, u16 mem_mask) { - return m_mem_cache->read_word(((offset << 1) & 0x3fff) | m_bank2_base, mem_mask); + return m_mem_cache.read_word(((offset << 1) & 0x3fff) | m_bank2_base, mem_mask); } void ks0164_device::bank2_w(offs_t offset, u16 data, u16 mem_mask) { - m_mem_cache->write_word(((offset << 1) & 0x3fff) | m_bank2_base, data, mem_mask); + m_mem_cache.write_word(((offset << 1) & 0x3fff) | m_bank2_base, data, mem_mask); } u16 ks0164_device::bank1_select_r() @@ -393,13 +393,13 @@ void ks0164_device::sound_stream_update(sound_stream &stream, stream_sample_t ** s16 samp0, samp1; switch(regs[0] & 0x8400) { case 0x0000: // 16 bits linear - samp0 = m_mem_cache->read_word(2*adr); - samp1 = m_mem_cache->read_word(2*adr+2); + samp0 = m_mem_cache.read_word(2*adr); + samp1 = m_mem_cache.read_word(2*adr+2); break; case 0x8400: // 8 bits compressed - samp0 = uncomp_8_16(m_mem_cache->read_byte(adr)); - samp1 = uncomp_8_16(m_mem_cache->read_byte(adr+1)); + samp0 = uncomp_8_16(m_mem_cache.read_byte(adr)); + samp1 = uncomp_8_16(m_mem_cache.read_byte(adr+1)); break; default: |