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minor fixes & error checking but still JE

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Q bug?
This commit is contained in:
xamidev
2024-10-24 17:27:26 +02:00
parent 59688d05c4
commit accbdc38e7
5 changed files with 33 additions and 8 deletions
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21
cpu.c
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@@ -26,6 +26,7 @@ void cpu_init()
cpu.halted = false;
cpu.equal_flag = false;
cpu.flag_clear_delay = 0;
cpu.increment = 0;
for (size_t i=0; i<NUM_REGISTERS; i++)
{
cpu.reg[i] = 0;
@@ -132,6 +133,7 @@ void cpu_exec(uint8_t opcode)
cpu.halted = true;
break;
}
cpu.increment++;
}
/*
@@ -185,6 +187,17 @@ void cpu_run()
{
uint8_t opcode = cpu.memory[cpu.pc++];
cpu_exec(opcode);
if (cpu.pc >= MEM_SIZE)
{
printf("\nProgram ended - program counter reached max memsize\n");
break;
}
if (cpu.increment > INF_LOOP_THRESHOLD)
{
printf("\nProgram ended - reached infinite loop threshold\n");
break;
}
}
printf("\n[END CPU OUTPUT]\n");
}
@@ -210,12 +223,12 @@ void cpu_dump()
void mem_dump()
{
printf("\n*** Memory dump ***\n");
printf("\n*** Memory dump ***");
for (size_t i=0; i<MEM_SIZE; i++)
{
if (i%20 == 0)
{
puts("");
printf("\n%04ld: ", i);
}
switch (cpu.memory[i])
@@ -254,10 +267,14 @@ void mem_dump()
break;
// General purpose registers (colored foreground)
//case 0x00:
case 0x01:
case 0x02:
case 0x03:
case 0x04:
case 0x05:
case 0x06:
case 0x07:
printf("\e[36m%02x\e[0m ", cpu.memory[i]);
break;
default: