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/m6805/m68705.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/m6805/m68705.cpp')
-rw-r--r-- | src/devices/cpu/m6805/m68705.cpp | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/src/devices/cpu/m6805/m68705.cpp b/src/devices/cpu/m6805/m68705.cpp index d121201d6d8..12e3b8d1384 100644 --- a/src/devices/cpu/m6805/m68705.cpp +++ b/src/devices/cpu/m6805/m68705.cpp @@ -215,7 +215,7 @@ Ux Parts: */ m6805_hmos_device::m6805_hmos_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock, device_type type, u32 addr_width, unsigned ram_size) - : m6805_base_device(mconfig, tag, owner, clock, type, { s_hmos_ops, s_hmos_cycles, addr_width, 0x007f, 0x0060, M6805_VECTOR_SWI }, address_map_constructor(FUNC(m6805_hmos_device::map), this)) + : m6805_base_device(mconfig, tag, owner, clock, type, { addr_width > 13 ? s_hmos_b_ops : s_hmos_s_ops, s_hmos_cycles, addr_width, 0x007f, 0x0060, M6805_VECTOR_SWI }, address_map_constructor(FUNC(m6805_hmos_device::map), this)) , m_timer(*this) , m_port_open_drain{ false, false, false, false } , m_port_mask{ 0x00, 0x00, 0x00, 0x00 } @@ -471,7 +471,10 @@ void m6805_hmos_device::device_reset() // reset timer/counter m_timer.reset(); - rm16(M6805_VECTOR_RESET, m_pc); + if (m_params.m_addr_width > 13) + rm16<true>(M6805_VECTOR_RESET, m_pc); + else + rm16<false>(M6805_VECTOR_RESET, m_pc); } void m68705_device::device_reset() @@ -484,12 +487,18 @@ void m68705_device::device_reset() if (CLEAR_LINE != m_vihtp) { LOG("loading bootstrap vector\n"); - rm16(M68705_VECTOR_BOOTSTRAP, m_pc); + if (m_params.m_addr_width > 13) + rm16<true>(M68705_VECTOR_BOOTSTRAP, m_pc); + else + rm16<false>(M68705_VECTOR_BOOTSTRAP, m_pc); } else { LOG("loading reset vector\n"); - rm16(M6805_VECTOR_RESET, m_pc); + if (m_params.m_addr_width > 13) + rm16<true>(M6805_VECTOR_RESET, m_pc); + else + rm16<false>(M6805_VECTOR_RESET, m_pc); } } @@ -543,10 +552,19 @@ void m6805_hmos_device::interrupt() { if ((CC & IFLAG) == 0) { - pushword(m_pc); - pushbyte(m_x); - pushbyte(m_a); - pushbyte(m_cc); + if (m_params.m_addr_width > 13) { + pushword<true>(m_pc); + pushbyte<true>(m_x); + pushbyte<true>(m_a); + pushbyte<true>(m_cc); + } + else + { + pushword<false>(m_pc); + pushbyte<false>(m_x); + pushbyte<false>(m_a); + pushbyte<false>(m_cc); + } SEI; standard_irq_callback(0); @@ -554,12 +572,18 @@ void m6805_hmos_device::interrupt() { LOGINT("servicing /INT interrupt\n"); m_pending_interrupts &= ~(1 << M6805_IRQ_LINE); - rm16(M6805_VECTOR_INT, m_pc); + if (m_params.m_addr_width > 13) + rm16<true>(M6805_VECTOR_INT, m_pc); + else + rm16<false>(M6805_VECTOR_INT, m_pc); } else if (BIT(m_pending_interrupts, M6805_INT_TIMER)) { LOGINT("servicing timer/counter interrupt\n"); - rm16(M6805_VECTOR_TIMER, m_pc); + if (m_params.m_addr_width > 13) + rm16<true>(M6805_VECTOR_TIMER, m_pc); + else + rm16<false>(M6805_VECTOR_TIMER, m_pc); } else { |