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Revert "APU: Seemingly obvious optimization." 

This reverts commit f24ca1f8a2.
This commit is contained in:
Brandon Wright 2019-02-27 18:29:54 -06:00
parent 9a44626686
commit 7df5eaeaf1
2 changed files with 3 additions and 19 deletions
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19
apu/bapu/smp/core.cpp
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@ -37,27 +37,14 @@ void SMP::op_write(uint16 addr, uint8 data) {
apuram[addr] = data; //all writes go to RAM, even MMIO writes
}
uint8 SMP::op_readpc() {
tick();
if (regs.pc >= 0xffc0 && status.iplrom_enable) return iplrom[regs.pc++ & 0x3f];
return apuram[regs.pc++];
}
uint8 SMP::op_readstack() {
tick();
return apuram[0x0100 | ++regs.sp];
}
void SMP::op_writestack(uint8 data) {
tick();
apuram[0x0100 | regs.sp--] = data;
}
void SMP::op_step() {
#define op_readpc() op_read(regs.pc++)
#define op_readdp(addr) op_read((regs.p.p << 8) + ((addr) & 0xff))
#define op_writedp(addr, data) op_write((regs.p.p << 8) + ((addr) & 0xff), data)
#define op_readaddr(addr) op_read(addr)
#define op_writeaddr(addr, data) op_write(addr, data)
#define op_readstack() op_read(0x0100 | ++regs.sp)
#define op_writestack(data) op_write(0x0100 | regs.sp--, data)
if(opcode_cycle == 0)
{

3
apu/bapu/smp/smp.hpp
View File

@ -94,9 +94,6 @@ public:
debugvirtual alwaysinline uint8 op_read(uint16 addr);
debugvirtual alwaysinline void op_write(uint16 addr, uint8 data);
debugvirtual alwaysinline void op_step();
alwaysinline uint8 op_readpc();
alwaysinline uint8 op_readstack();
alwaysinline void op_writestack(uint8 data);
static const unsigned cycle_count_table[256];
uint64 cycle_table_cpu[256];
unsigned cycle_table_dsp[256];