Instruction Execution

Functions
int	v6502_instructionLengthForOpcode (v6502_opcode opcode)
	Return the byte-length of an instruction based on the opcode (See: Karnaugh Map Analysis)
v6502_address_mode	v6502_addressModeForOpcode (v6502_opcode opcode)
	Return the v6502_address_mode of an instruction based on the opcode (See: Karnaugh Map Analysis)
void	v6502_execute (v6502_cpu *cpu, uint8_t opcode, uint8_t low, uint8_t high)
	Execute an instruction on a v6502_cpu. More...
void	v6502_step (v6502_cpu *cpu)
	Single step a v6502_cpu.
void	v6502_reset (v6502_cpu *cpu)
	Hardware reset a v6502_cpu.
void	v6502_nmi (v6502_cpu *cpu)
	Send an NMI to a v6502_cpu.

Detailed Description

Function Documentation

v6502_execute()

void v6502_execute	(	v6502_cpu *	cpu,
		uint8_t	opcode,
		uint8_t	low,
		uint8_t	high
	)

Execute an instruction on a v6502_cpu.

It is important to note that this does not alter the program counter, v6502_step is required in order for that to happen. This is because some operations (like the interrupt sequence) actually inject instructions directly into the cpu, mid-execution.

Todo:

TODO: Should this prevent the automatic pc shift?

TODO:

Todo:

Interrupts (RTI/RTS)

[eor]

[eor]

[jmp]

[jmp]

[lda]

[lda]

[ldx]

[ldx]

[ldy]

[ldy]

[sbc]

[sbc]

[sta]

[sta]

[stx]

[stx]

[sty]

[sty]