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risc2500/tasc: remove some unneeded variables

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This commit is contained in:
hap 2021-04-26 11:34:50 +02:00
parent eb691627be
commit 43a85c48ef
2 changed files with 6 additions and 14 deletions
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10
src/mame/drivers/saitek_risc2500.cpp
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@ -321,13 +321,8 @@ u32 risc2500_state::rom_r(offs_t offset)
if (!machine().side_effects_disabled())
{
// handle dynamic cpu clock divider when accessing rom
u64 cur_cycle = m_maincpu->total_cycles();
u64 prev_cycle = m_prev_cycle;
s64 diff = cur_cycle - prev_cycle;
s64 diff = m_maincpu->total_cycles() - m_prev_cycle;
u32 pc = m_maincpu->pc();
u32 prev_pc = m_prev_pc;
m_prev_pc = pc;
if (diff > 0)
{
@ -336,13 +331,14 @@ u32 risc2500_state::rom_r(offs_t offset)
static constexpr int divider = -8 + 1;
// this takes care of almost all cases, otherwise, total cycles taken can't be determined
if (diff <= arm_branch_cycles || (diff <= arm_max_cycles && (pc - prev_pc) == 4 && (pc & ~0x02000000) == (offset * 4)))
if (diff <= arm_branch_cycles || (diff <= arm_max_cycles && (pc - m_prev_pc) == 4 && (pc & ~0x02000000) == (offset * 4)))
m_maincpu->adjust_icount(divider * (int)diff);
else
m_maincpu->adjust_icount(divider);
}
m_prev_cycle = m_maincpu->total_cycles();
m_prev_pc = pc;
}
return m_rom[offset];

10
src/mame/drivers/tasc.cpp
View File

@ -227,13 +227,8 @@ u32 tasc_state::rom_r(offs_t offset)
if (!machine().side_effects_disabled())
{
// handle dynamic cpu clock divider when accessing rom
u64 cur_cycle = m_maincpu->total_cycles();
u64 prev_cycle = m_prev_cycle;
s64 diff = cur_cycle - prev_cycle;
s64 diff = m_maincpu->total_cycles() - m_prev_cycle;
u32 pc = m_maincpu->pc();
u32 prev_pc = m_prev_pc;
m_prev_pc = pc;
if (diff > 0)
{
@ -242,13 +237,14 @@ u32 tasc_state::rom_r(offs_t offset)
static constexpr int divider = -7 + 1;
// this takes care of almost all cases, otherwise, total cycles taken can't be determined
if (diff <= arm_branch_cycles || (diff <= arm_max_cycles && (pc - prev_pc) == 4 && (pc & ~0x02000000) == (offset * 4)))
if (diff <= arm_branch_cycles || (diff <= arm_max_cycles && (pc - m_prev_pc) == 4 && (pc & ~0x02000000) == (offset * 4)))
m_maincpu->adjust_icount(divider * (int)diff);
else
m_maincpu->adjust_icount(divider);
}
m_prev_cycle = m_maincpu->total_cycles();
m_prev_pc = pc;
}
return m_rom[offset];