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Bring the various IntelProcessor derived processors a little closer together.

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Signed-off-by: Adrian.Conlon <adrian.conlon@arup.com>
This commit is contained in:
Adrian.Conlon
2017-07-19 13:59:28 +01:00
parent 758574007d
commit 36fbee35fb
5 changed files with 270 additions and 314 deletions
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Intel8080/inc/Intel8080.h
+31 -33
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@@ -107,9 +107,8 @@ namespace EightBit {
//
void compare(uint8_t value) {
auto check = A();
sub(check, value);
void compare(uint8_t& f, uint8_t check, uint8_t value) {
subtract(f, check, value);
}
void anda(uint8_t value) {
@@ -154,22 +153,21 @@ namespace EightBit {
HL().word = sum;
}
void sub(uint8_t& operand, uint8_t value, int carry = 0) {
auto& f = F();
register16_t difference;
difference.word = operand - value - carry;
adjustAuxiliaryCarrySub(f, operand, value, difference.word);
operand = difference.low;
setFlag(f, CF, difference.word & Bit8);
void subtract(uint8_t& f, uint8_t& operand, uint8_t value, int carry = 0) {
register16_t result;
result.word = operand - value - carry;
adjustAuxiliaryCarrySub(f, operand, value, result.word);
operand = result.low;
setFlag(f, CF, result.word & Bit8);
adjustSZP<Intel8080>(f, operand);
}
void sub(uint8_t value, int carry = 0) {
sub(A(), value, carry);
}
void sbb(uint8_t value) {
sub(value, F() & CF);
subtract(F(), A(), value, F() & CF);
}
void mov_m_r(uint8_t value) {
@@ -499,17 +497,17 @@ namespace EightBit {
// subtract
void sub_a() { sub(A()); }
void sub_b() { sub(B()); }
void sub_c() { sub(C()); }
void sub_d() { sub(D()); }
void sub_e() { sub(E()); }
void sub_h() { sub(H()); }
void sub_l() { sub(L()); }
void sub_a() { subtract(F(), A(), A()); }
void sub_b() { subtract(F(), A(), B()); }
void sub_c() { subtract(F(), A(), C()); }
void sub_d() { subtract(F(), A(), D()); }
void sub_e() { subtract(F(), A(), E()); }
void sub_h() { subtract(F(), A(), H()); }
void sub_l() { subtract(F(), A(), L()); }
void sub_m() {
m_memory.ADDRESS() = HL();
sub(m_memory.reference());
subtract(F(), A(), m_memory.reference());
}
void sbb_a() { sbb(A()); }
@@ -530,7 +528,7 @@ namespace EightBit {
}
void sui() {
sub(fetchByte());
subtract(F(), A(), fetchByte());
}
// logical
@@ -580,20 +578,20 @@ namespace EightBit {
void ori() { ora(fetchByte()); }
void cmp_a() { compare(A()); }
void cmp_b() { compare(B()); }
void cmp_c() { compare(C()); }
void cmp_d() { compare(D()); }
void cmp_e() { compare(E()); }
void cmp_h() { compare(H()); }
void cmp_l() { compare(L()); }
void cmp_a() { compare(F(), A(), A()); }
void cmp_b() { compare(F(), A(), B()); }
void cmp_c() { compare(F(), A(), C()); }
void cmp_d() { compare(F(), A(), D()); }
void cmp_e() { compare(F(), A(), E()); }
void cmp_h() { compare(F(), A(), H()); }
void cmp_l() { compare(F(), A(), L()); }
void cmp_m() {
m_memory.ADDRESS() = HL();
compare(m_memory.reference());
compare(F(), A(), m_memory.reference());
}
void cpi() { compare(fetchByte()); }
void cpi() { compare(F(), A(), fetchByte()); }
// rotate