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137 lines
5.0 KiB
Swift
137 lines
5.0 KiB
Swift
//
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// TimingTests.swift
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// Clock Signal
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//
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// Created by Thomas Harte on 13/08/2015.
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// Copyright © 2015 Thomas Harte. All rights reserved.
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//
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import Foundation
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import XCTest
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class TimingTests: XCTestCase, CSTestMachineJamHandler {
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private var endTime: UInt32 = 0
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func testImplied() {
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let code: [UInt8] = [0xea, 0x88, 0xca, CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 6)
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}
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func testLDA() {
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let code: [UInt8] = [
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0xa9, 0x00, // [2] LDA #$00
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0xa5, 0x00, // [3] LDA $00
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0xb5, 0x00, // [4] LDA $00,X
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0xad, 0x00, 0x00, // [4] LDA $0000
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0xbd, 0x00, 0x00, // [4] LDA $0000, x (no wrap)
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0xbd, 0x02, 0x00, // [5] LDA $0002, x (wrap)
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0xb9, 0x00, 0x00, // [4] LDA $0000, y (no wrap)
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0xb9, 0x10, 0x00, // [5] LDA $0010, y (wrap)
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0xa1, 0x44, // [6] LDA ($44, x)
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0xb1, 0x00, // [5] LDA ($00), y (no wrap)
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0xb1, 0x02, // [6] LDA ($01), y (wrap)
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 48)
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}
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func testSTA() {
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let code: [UInt8] = [
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0x85, 0x00, // [3] STA $00
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0x95, 0x00, // [4] STA $00,X
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0x8d, 0x00, 0x00, // [4] STA $0000
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0x9d, 0x00, 0x00, // [5] STA $0000, x (no wrap)
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0x9d, 0x02, 0x00, // [5] STA $0002, x (wrap)
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0x99, 0x00, 0x00, // [5] STA $0000, y (no wrap)
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0x99, 0x10, 0x00, // [5] STA $0010, y (wrap)
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0x81, 0x44, // [6] STA ($44, x)
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0x91, 0x00, // [6] STA ($00), y (no wrap)
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0x91, 0x02, // [6] STA ($01), y (wrap)
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 49)
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}
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func testINC() {
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let code: [UInt8] = [
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0xe6, 0x00, // [5] INC $00
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0xf6, 0x00, // [6] INC $00,X
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0xee, 0x00, 0x00, // [6] INC $0000
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0xfe, 0x00, 0x00, // [7] INC $0000, x (no wrap)
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0xfe, 0x02, 0x00, // [7] INC $0002, x (wrap)
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 31)
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}
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func testBCS() {
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let code: [UInt8] = [
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0x18, // [2] CLC
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0xb0, 0xff, // [2] BCS -1 (not taken)
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0x90, 0x7f, // [3] BCC +7f (taken)
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x90, 0x00, // [3] BCC 0 (taken)
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0x90, 0x7f, // [4] BCC +6f (taken, page wrap)
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 14)
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}
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func testSnippet1() {
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let code: [UInt8] = [
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0x8d, 0x08, 0x00, // [4] STA $0008
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0xc6, 0xb4, // [5] DEC $B4
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 9)
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}
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func testSnippet2() {
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let code: [UInt8] = [
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0x16, 0x16, // [6] ASL $16, x
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0x46, 0x46, // [5] LSR $46
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CSTestMachineJamOpcode]
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self.runTest(code, expectedRunLength: 11)
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}
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func runTest(code: [UInt8], expectedRunLength: UInt32) {
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let machine = CSTestMachine()
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machine.jamHandler = self
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let immediateCode = NSData(bytes: code, length: code.count)
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machine.setData(immediateCode, atAddress: 0x200)
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machine.setValue(0x00, forAddress: 0x0000)
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machine.setValue(0x00, forAddress: 0x0001)
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machine.setValue(0xff, forAddress: 0x0002)
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machine.setValue(0x00, forAddress: 0x0003)
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machine.setValue(0x200, forRegister: CSTestMachineRegister.ProgramCounter)
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machine.setValue(0xff, forRegister: CSTestMachineRegister.X)
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machine.setValue(0xfe, forRegister: CSTestMachineRegister.Y)
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self.endTime = 0
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while self.endTime == 0 {
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machine.runForNumberOfCycles(10)
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}
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XCTAssert(self.endTime == expectedRunLength, "Took \(self.endTime) cycles to perform")
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}
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func testMachine(machine: CSTestMachine!, didJamAtAddress address: UInt16) {
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if self.endTime == 0 {
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self.endTime = machine.timestamp - 7
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}
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}
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}
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