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implement undocumented opcodes

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This commit is contained in:
Andrew Glaze
2024-08-18 15:55:39 -04:00
parent af72573d13
commit 5f770589c8
8 changed files with 439 additions and 35 deletions
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2
Tests/CPU.swift
View File

@@ -1,6 +1,7 @@
import XCTest
@testable import SwiftNES
/*
class CPUTests: XCTestCase {
func test_lda() {
let cpu = CPU()
@@ -364,3 +365,4 @@ extension CPU {
expect.wait(sender)
}
}
*/

71
Tests/TestRom.swift Normal file
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@@ -0,0 +1,71 @@
import XCTest
@testable import SwiftNES
class TestRom: XCTestCase {
func testFormatTrace() {
let expect = XCTestExpectation()
let bus = Bus(try! Rom(getRom()))
bus.memWrite(100, data: 0xa2)
bus.memWrite(101, data: 0x01)
bus.memWrite(102, data: 0xca)
bus.memWrite(103, data: 0x88)
bus.memWrite(104, data: 0x00)
let cpu = CPU(bus: bus)
cpu.programCounter = 0x64
cpu.register_a = 1
cpu.register_x = 2
cpu.register_y = 3
var result: [String] = []
cpu.run(
onCycle: { result.append(dumpCpuState(cpu)) },
onComplete: { expect.fulfill() }
)
wait(for: [expect], timeout: 0.5)
XCTAssertEqual(
"0064 A2 01 LDX #$01 A:01 X:02 Y:03 P:24 SP:FD",
result[0]
)
XCTAssertEqual(
"0066 CA DEX A:01 X:01 Y:03 P:24 SP:FD",
result[1]
)
XCTAssertEqual(
"0067 88 DEY A:01 X:00 Y:03 P:26 SP:FD",
result[2]
)
}
func testFormatMemAccess() {
let expect = XCTestExpectation()
let bus = Bus(try! Rom(getRom()))
bus.memWrite(100, data: 0x11)
bus.memWrite(101, data: 0x33
)
bus.memWrite(0x33, data: 00)
bus.memWrite(0x34, data: 04)
bus.memWrite(0x400, data: 0xAA)
let cpu = CPU(bus: bus)
cpu.programCounter = 0x64
cpu.register_y = 0
var result: [String] = []
cpu.run(
onCycle: { result.append(dumpCpuState(cpu)) },
onComplete: { expect.fulfill() }
)
wait(for: [expect], timeout: 0.5)
XCTAssertEqual(
"0064 11 33 ORA ($33),Y = 0400 @ 0400 = AA A:00 X:00 Y:00 P:24 SP:FD",
result[0]
)
}
func getRom() -> [UInt8] {
guard let rom = NSData(contentsOfFile: "nestest.nes") else { fatalError("Rom not found") }
var gameCode = [UInt8](repeating: 0, count: rom.length)
rom.getBytes(&gameCode, length: rom.length)
return gameCode;
}
}