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setMMR0_as_is added

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folkert van heusden 2024-05-09 18:11:30 +02:00
parent 5b10468b8e
commit 8b03af0372
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
2 changed files with 9 additions and 3 deletions
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11
mmu.cpp
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@ -48,6 +48,11 @@ uint16_t mmu::read_par(const uint32_t a, const int run_mode)
return t;
}
void mmu::setMMR0_as_is(uint16_t value)
{
MMR0 = value;
}
void mmu::setMMR0(uint16_t value)
{
value &= ~(3 << 10); // bit 10 & 11 always read as 0
@ -350,7 +355,7 @@ uint32_t mmu::calculate_physical_address(cpu *const c, const int run_mode, const
temp |= d << 4;
setMMR0(temp);
setMMR0_as_is(temp);
TRACE("MMR0: %06o", temp);
}
@ -389,7 +394,7 @@ uint32_t mmu::calculate_physical_address(cpu *const c, const int run_mode, const
temp &= ~(3 << 5);
temp |= run_mode << 5;
setMMR0(temp);
setMMR0_as_is(temp);
}
if (is_write)
@ -427,7 +432,7 @@ uint32_t mmu::calculate_physical_address(cpu *const c, const int run_mode, const
temp &= ~(1 << 4);
temp |= d << 4;
setMMR0(temp);
setMMR0_as_is(temp);
}
if (is_write)

1
mmu.h
View file

@ -99,6 +99,7 @@ public:
uint16_t getMMR3() const { return MMR3; }
uint16_t getMMR(int nr) const { const uint16_t *const mmrs[] { &MMR0, &MMR1, &MMR2, &MMR3 }; return *mmrs[nr]; }
void setMMR0_as_is(uint16_t value);
void setMMR0(const uint16_t value);
void setMMR1(const uint16_t value);
void setMMR2(const uint16_t value);