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added missing flag settings

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This commit is contained in:
Luigi Thirty 2017-07-21 03:31:52 -04:00
parent 6f1027f788
commit 944f51a186
1 changed files with 6 additions and 0 deletions
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6
FruitMachine/M6502/Opcodes.swift
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@ -169,6 +169,9 @@ class Opcodes: NSObject {
static func TSX(state: CPUState, addressingMode: AddressingMode) -> Void {
state.index_x = state.stack_pointer
state.updateZeroFlag();
state.updateNegativeFlag();
}
static func PHA(state: CPUState, addressingMode: AddressingMode) -> Void {
@ -179,6 +182,9 @@ class Opcodes: NSObject {
static func PLA(state: CPUState, addressingMode: AddressingMode) -> Void {
state.stack_pointer = state.stack_pointer &+ 1
state.accumulator = state.memoryInterface.readByte(offset: 0x0100 | UInt16(state.stack_pointer))
state.updateZeroFlag();
state.updateNegativeFlag();
}
static func PHP(state: CPUState, addressingMode: AddressingMode) -> Void {