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LR35902: Fix a ton of Z flags

This commit is contained in:
Jeffrey Pfau 2016-01-20 22:57:49 -08:00
parent 6c399882f9
commit c0b965a41e
1 changed files with 9 additions and 9 deletions
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18
src/lr35902/isa-lr35902.c
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@ -158,7 +158,7 @@ DEFINE_CONDITIONAL_INSTRUCTION_LR35902(RET)
DEFINE_INSTRUCTION_LR35902(CP ## NAME, \
int diff = cpu->a - OPERAND; \
cpu->f.n = 1; \
cpu->f.z = !diff; \
cpu->f.z = !(diff & 0xFF); \
cpu->f.h = (cpu->a & 0xF) - (OPERAND & 0xF) < 0; \
cpu->f.c = diff < 0;)
@ -265,7 +265,7 @@ static void _LR35902InstructionLDA_Bus(struct LR35902Core*);
int diff = cpu->a + OPERAND; \
cpu->a = diff; \
cpu->f.n = 0; \
cpu->f.z = !diff; \
cpu->f.z = !cpu->a; \
cpu->f.h = (cpu->a & 0xF) + (OPERAND & 0xF) >= 0x10; \
cpu->f.c = diff >= 0x100;)
@ -274,7 +274,7 @@ static void _LR35902InstructionLDA_Bus(struct LR35902Core*);
int diff = cpu->a + OPERAND + cpu->f.c; \
cpu->a = diff; \
cpu->f.n = 0; \
cpu->f.z = !diff; \
cpu->f.z = !cpu->a; \
cpu->f.h = (cpu->a & 0xF) + ((OPERAND + cpu->f.c) & 0xF) >= 0x10; \
cpu->f.c = diff > 0x100;)
@ -283,7 +283,7 @@ static void _LR35902InstructionLDA_Bus(struct LR35902Core*);
int diff = cpu->a - OPERAND; \
cpu->a = diff; \
cpu->f.n = 1; \
cpu->f.z = !diff; \
cpu->f.z = !cpu->a; \
cpu->f.h = (cpu->a & 0xF) - (OPERAND & 0xF) < 0; \
cpu->f.c = diff < 0;)
@ -292,7 +292,7 @@ static void _LR35902InstructionLDA_Bus(struct LR35902Core*);
int diff = cpu->a - OPERAND - cpu->f.c; \
cpu->a = diff; \
cpu->f.n = 1; \
cpu->f.z = !diff; \
cpu->f.z = !cpu->a; \
cpu->f.h = (cpu->a & 0xF) - ((OPERAND + cpu->f.c) & 0xF) < 0; \
cpu->f.c = diff < 0;)
@ -524,7 +524,7 @@ DEFINE_ADD_HL_INSTRUCTION_LR35902(SP, (cpu->sp & 0xFF), (cpu->sp >> 8));
int diff = OPERAND + 1; \
OPERAND = diff; \
cpu->f.n = 0; \
cpu->f.z = !diff; \
cpu->f.z = !OPERAND; \
/* TODO: Find explanation of H flag */)
#define DEFINE_DEC_INSTRUCTION_LR35902(NAME, OPERAND) \
@ -532,7 +532,7 @@ DEFINE_ADD_HL_INSTRUCTION_LR35902(SP, (cpu->sp & 0xFF), (cpu->sp >> 8));
int diff = OPERAND - 1; \
OPERAND = diff; \
cpu->f.n = 1; \
cpu->f.z = !diff; \
cpu->f.z = !OPERAND; \
/* TODO: Find explanation of H flag */)
DEFINE_ALU_INSTRUCTION_LR35902_NOHL(INC);
@ -542,7 +542,7 @@ DEFINE_INSTRUCTION_LR35902(INC_HLDelay,
int diff = cpu->bus + 1;
cpu->bus = diff;
cpu->f.n = 0;
cpu->f.z = !diff;
cpu->f.z = !cpu->bus;
cpu->f.h = (cpu->bus & 0xF) == 0xF;
cpu->instruction = _LR35902InstructionNOP;
cpu->executionState = LR35902_CORE_MEMORY_STORE;)
@ -556,7 +556,7 @@ DEFINE_INSTRUCTION_LR35902(DEC_HLDelay,
int diff = cpu->bus - 1;
cpu->bus = diff;
cpu->f.n = 1;
cpu->f.z = !diff;
cpu->f.z = !cpu->bus;
cpu->f.h = (cpu->bus & 0xF) == 0;
cpu->instruction = _LR35902InstructionNOP;
cpu->executionState = LR35902_CORE_MEMORY_STORE;)