mirror of
https://github.com/Luigi30/FruitMachine-Swift.git
synced 2024-11-26 21:52:45 +00:00
carry flag problem
This commit is contained in:
Luigi Thirty
parent
16ad485931
commit
4efe09ad30
@ -22,6 +22,7 @@
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2A6DC7F01F30495D0066FE0D /* ScreenView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A6DC7EF1F30495D0066FE0D /* ScreenView.swift */; };
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2A7665781F2F05F600135518 /* PreferencesWindowController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A7665761F2F05F600135518 /* PreferencesWindowController.swift */; };
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2A7665791F2F05F600135518 /* PreferencesWindow.xib in Resources */ = {isa = PBXBuildFile; fileRef = 2A7665771F2F05F600135518 /* PreferencesWindow.xib */; };
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2A86FB971F316CB500AD0C68 /* KeyboardController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A86FB961F316CB500AD0C68 /* KeyboardController.swift */; };
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2A91852A1F2EA84D00A9E5BE /* BitmapPixels.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2A9185291F2EA84D00A9E5BE /* BitmapPixels.swift */; };
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2AA8B5F81F2A8889002B350F /* AppleI.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2AA8B5F71F2A8889002B350F /* AppleI.swift */; };
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2AA8B5FC1F2A8EAD002B350F /* Terminal.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2AA8B5FB1F2A8EAD002B350F /* Terminal.swift */; };
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@ -62,6 +63,7 @@
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2A6DC7EF1F30495D0066FE0D /* ScreenView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScreenView.swift; sourceTree = "<group>"; };
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2A7665761F2F05F600135518 /* PreferencesWindowController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PreferencesWindowController.swift; sourceTree = "<group>"; };
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2A7665771F2F05F600135518 /* PreferencesWindow.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = PreferencesWindow.xib; sourceTree = "<group>"; };
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2A86FB961F316CB500AD0C68 /* KeyboardController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KeyboardController.swift; sourceTree = "<group>"; };
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2A9185291F2EA84D00A9E5BE /* BitmapPixels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BitmapPixels.swift; sourceTree = "<group>"; };
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2AA8B5F71F2A8889002B350F /* AppleI.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppleI.swift; sourceTree = "<group>"; };
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2AA8B5FB1F2A8EAD002B350F /* Terminal.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Terminal.swift; sourceTree = "<group>"; };
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@ -163,6 +165,7 @@
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children = (
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2A6DC7EE1F30492E0066FE0D /* Video */,
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2AB6CACC1F3041A200DECAC0 /* AppleII.swift */,
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2A86FB961F316CB500AD0C68 /* KeyboardController.swift */,
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2A6C2D161F31216700B8DC60 /* SoftswitchOverrides.swift */,
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);
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path = AppleII;
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@ -358,6 +361,7 @@
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2AD6D5841F26E6BF008F3CF5 /* DebuggerCommands.swift in Sources */,
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2AE5BA041F23DE4400FAA343 /* Disassembly.swift in Sources */,
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2A6DC7EB1F3045C90066FE0D /* EmulatedSystem.swift in Sources */,
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2A86FB971F316CB500AD0C68 /* KeyboardController.swift in Sources */,
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2AE42E3A1F28628300C4900E /* AppleIViewController.swift in Sources */,
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2AD458E51F2070DF00F05121 /* Opcodes.swift in Sources */,
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2AE42E081F2850F400C4900E /* ReadOverride.swift in Sources */,
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@ -14,6 +14,7 @@ class AppleII: NSObject, EmulatedSystem {
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var frameCounter: Int = 0
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let cg = A2CharacterGenerator(romPath: "/Users/luigi/apple2/a2.chr");
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let keyboardController = KeyboardController()
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var CPU_FREQUENCY: Double
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var FRAMES_PER_SECOND: Double
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@ -30,6 +31,7 @@ class AppleII: NSObject, EmulatedSystem {
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super.init()
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loadROMs()
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setupMemory(ramConfig: .sixteenK)
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emuScreenLayer.shouldRasterize = true
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emuScreenLayer.delegate = emulatorViewDelegate
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@ -42,14 +44,21 @@ class AppleII: NSObject, EmulatedSystem {
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installOverrides()
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doReset()
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}
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func doReset() {
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CPU.sharedInstance.performReset()
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}
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func loadROMs() {
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/*
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CPU.sharedInstance.memoryInterface.loadBinary(path: "/Users/luigi/apple2/341-0001-00.e0", offset: 0xE000, length: 0x800)
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CPU.sharedInstance.memoryInterface.loadBinary(path: "/Users/luigi/apple2/341-0002-00.e8", offset: 0xE800, length: 0x800)
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CPU.sharedInstance.memoryInterface.loadBinary(path: "/Users/luigi/apple2/341-0003-00.f0", offset: 0xF000, length: 0x800)
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CPU.sharedInstance.memoryInterface.loadBinary(path: "/Users/luigi/apple2/341-0004-00.f8", offset: 0xF800, length: 0x800)
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*/
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CPU.sharedInstance.memoryInterface.loadBinary(path: "/Users/luigi/6502/test.bin", offset: 0x0000, length: 0x10000)
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}
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func installOverrides() {
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@ -89,4 +98,33 @@ class AppleII: NSObject, EmulatedSystem {
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emulatorView.setNeedsDisplay(emulatorView.frame)
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}
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enum MemoryConfiguration {
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case fourK
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case sixteenK
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case fortyeightK
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}
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func setupMemory(ramConfig: MemoryConfiguration) {
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let ramPages: Int
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switch ramConfig {
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case .fourK:
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ramPages = 4096 / 256
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case .sixteenK:
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ramPages = 16384 / 256
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case .fortyeightK:
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ramPages = 49152 / 256
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}
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for page in 0 ..< ramPages {
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CPU.sharedInstance.memoryInterface.pages[page] = MemoryInterface.pageMode.rw //RAM
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}
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for page in ramPages ..< 192 {
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CPU.sharedInstance.memoryInterface.pages[page] = MemoryInterface.pageMode.null //not connected
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}
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for page in 224 ..< 256 {
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CPU.sharedInstance.memoryInterface.pages[page] = MemoryInterface.pageMode.ro //not connected
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}
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}
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}
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14
FruitMachine/AppleII/KeyboardController.swift
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14
FruitMachine/AppleII/KeyboardController.swift
Normal file
@ -0,0 +1,14 @@
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//
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// KeyboardController.swift
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// FruitMachine
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//
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// Created by Christopher Rohl on 8/1/17.
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// Copyright © 2017 Christopher Rohl. All rights reserved.
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//
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import Cocoa
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class KeyboardController: NSObject {
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var KEYBOARD: UInt8 = 0x00
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var STROBE: UInt8 = 0x00
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}
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@ -13,11 +13,10 @@ extension AppleII {
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class SoftswitchOverrides: NSObject {
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static let readKeyboard = ReadOverride(start: 0xC000, end: 0xC000, readAnyway: false, action: SoftswitchOverrides.actionReadKeyboard)
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static func actionReadKeyboard(dummy: AnyObject, byte: UInt8?) -> UInt8? {
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let b = CPU.sharedInstance.memoryInterface.readByte(offset: 0xC000, bypassOverrides: true)
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CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC000, value: b)
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return b
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//let b = CPU.sharedInstance.memoryInterface.readByte(offset: 0xC000, bypassOverrides: true)
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//CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC000, value: b)
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//return b
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return AppleII.sharedInstance.keyboardController.KEYBOARD
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}
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static let clearKeypressStrobeR = ReadOverride(start: 0xC010, end: 0xC010, readAnyway: false, action: SoftswitchOverrides.actionClearKeypressStrobe)
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@ -25,10 +24,14 @@ extension AppleII {
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static func actionClearKeypressStrobe(dummy: AnyObject, byte: UInt8?) -> UInt8? {
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//Clears b7 of $C000 on write.
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let b = CPU.sharedInstance.memoryInterface.readByte(offset: 0xC000, bypassOverrides: true)
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CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC000, value: b & 0x7F, bypassOverrides: true)
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//let b = CPU.sharedInstance.memoryInterface.readByte(offset: 0xC000, bypassOverrides: true)
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//CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC000, value: b & 0x7F, bypassOverrides: true)
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//CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC010, value: b & 0x7F, bypassOverrides: true)
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//return b
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let b = AppleII.sharedInstance.keyboardController.KEYBOARD
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AppleII.sharedInstance.keyboardController.KEYBOARD = b & 0x7F
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AppleII.sharedInstance.keyboardController.STROBE = b & 0x7F
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return b
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}
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}
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@ -25,11 +25,15 @@ class AppleIIViewController: NSViewController {
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self.view.addSubview(computer.emulatorView)
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/*
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self.frameTimer = Timer.scheduledTimer(timeInterval: 1.0/60.0,
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target: self,
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selector: #selector(runEmulation),
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userInfo: nil,
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repeats: true)
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*/
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CPU.sharedInstance.program_counter = 0x400
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}
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@objc func runEmulation() {
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@ -49,6 +53,10 @@ class AppleIIViewController: NSViewController {
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preferencesWindowController.loadWindow()
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}
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@IBAction func doReset(_ sender: Any) {
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computer.doReset()
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}
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override func keyDown(with event: NSEvent) {
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let c = returnChar(theEvent: event)
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@ -56,8 +64,8 @@ class AppleIIViewController: NSViewController {
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return
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}
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//Poke the ASCII byte into $C000.
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CPU.sharedInstance.memoryInterface.writeByte(offset: 0xC000, value: UInt8((ascii32 | 0x80) & 0x000000FF))
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//Set the keyboard input register accordingly. Set b7 so the OS knows there's a keypress waiting
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computer.keyboardController.KEYBOARD = UInt8((ascii32 | 0x80) & 0x000000FF)
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}
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private func returnChar(theEvent: NSEvent) -> Character?{
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@ -64,60 +64,9 @@
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<modifierMask key="keyEquivalentModifierMask"/>
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<menu key="submenu" title="File" id="bib-Uj-vzu">
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<items>
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<menuItem title="New" keyEquivalent="n" id="Was-JA-tGl">
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<menuItem title="Reset" keyEquivalent="r" id="aTl-1u-JFS">
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<connections>
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<action selector="newDocument:" target="Ady-hI-5gd" id="4Si-XN-c54"/>
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</connections>
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</menuItem>
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<menuItem title="Open…" keyEquivalent="o" id="IAo-SY-fd9">
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<connections>
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<action selector="openDocument:" target="Ady-hI-5gd" id="bVn-NM-KNZ"/>
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</connections>
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</menuItem>
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<menuItem title="Open Recent" id="tXI-mr-wws">
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<modifierMask key="keyEquivalentModifierMask"/>
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<menu key="submenu" title="Open Recent" systemMenu="recentDocuments" id="oas-Oc-fiZ">
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<items>
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<menuItem title="Clear Menu" id="vNY-rz-j42">
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<modifierMask key="keyEquivalentModifierMask"/>
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<connections>
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<action selector="clearRecentDocuments:" target="Ady-hI-5gd" id="Daa-9d-B3U"/>
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</connections>
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</menuItem>
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</items>
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</menu>
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</menuItem>
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<menuItem isSeparatorItem="YES" id="m54-Is-iLE"/>
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<menuItem title="Close" keyEquivalent="w" id="DVo-aG-piG">
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<connections>
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<action selector="performClose:" target="Ady-hI-5gd" id="HmO-Ls-i7Q"/>
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</connections>
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</menuItem>
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<menuItem title="Save…" keyEquivalent="s" id="pxx-59-PXV">
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<connections>
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<action selector="saveDocument:" target="Ady-hI-5gd" id="teZ-XB-qJY"/>
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</connections>
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</menuItem>
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<menuItem title="Save As…" keyEquivalent="S" id="Bw7-FT-i3A">
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<connections>
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<action selector="saveDocumentAs:" target="Ady-hI-5gd" id="mDf-zr-I0C"/>
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</connections>
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</menuItem>
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<menuItem title="Revert to Saved" keyEquivalent="r" id="KaW-ft-85H">
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<connections>
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<action selector="revertDocumentToSaved:" target="Ady-hI-5gd" id="iJ3-Pv-kwq"/>
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</connections>
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</menuItem>
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<menuItem isSeparatorItem="YES" id="aJh-i4-bef"/>
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<menuItem title="Page Setup…" keyEquivalent="P" id="qIS-W8-SiK">
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<modifierMask key="keyEquivalentModifierMask" shift="YES" command="YES"/>
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<connections>
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<action selector="runPageLayout:" target="Ady-hI-5gd" id="Din-rz-gC5"/>
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</connections>
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</menuItem>
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<menuItem title="Print…" keyEquivalent="p" id="aTl-1u-JFS">
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<connections>
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<action selector="print:" target="Ady-hI-5gd" id="qaZ-4w-aoO"/>
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<action selector="doReset:" target="Ady-hI-5gd" id="7dg-B5-6Ok"/>
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</connections>
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</menuItem>
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</items>
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@ -46,7 +46,7 @@ class DebuggerViewController: NSViewController {
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text_CPU_SR.stringValue = String(format:"%02X", cpuInstance.stack_pointer)
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text_CPU_Flags.stringValue = String(cpuInstance.status_register.asString())
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disassembly = cpuInstance.disassemble(fromAddress: CPU.sharedInstance.program_counter, length: 256)
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disassembly = cpuInstance.disassemble(fromAddress: CPU.sharedInstance.program_counter &- 16, length: 256)
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debuggerTableView.reloadData()
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highlightCurrentInstruction()
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}
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@ -58,7 +58,7 @@ class DebuggerViewController: NSViewController {
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debuggerTableView.dataSource = self
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updateCPUStatusFields()
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disassembly = cpuInstance.disassemble(fromAddress: CPU.sharedInstance.program_counter, length: 256)
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disassembly = cpuInstance.disassemble(fromAddress: CPU.sharedInstance.program_counter &- 16, length: 256)
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debuggerTableView.reloadData()
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// Do any additional setup after loading the view.
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@ -9,20 +9,31 @@
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import Cocoa
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final class MemoryInterface: NSObject {
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enum pageMode {
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case ro
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case rw
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case null
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}
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fileprivate var memory: [UInt8]
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var read_overrides: [ReadOverride]
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var write_overrides: [WriteOverride]
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var pages: [pageMode] = [pageMode](repeating: .null, count: 256)
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override init() {
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memory = [UInt8](repeating: 0x00, count: 65536)
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read_overrides = [ReadOverride]()
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write_overrides = [WriteOverride]()
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}
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func readByte(offset: UInt16, bypassOverrides: Bool = false) -> UInt8 {
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func getPage(offset: UInt16) -> UInt8 {
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return UInt8(offset >> 8)
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}
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func readByte(offset: UInt16, bypassOverrides: Bool = false) -> UInt8 {
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if(!bypassOverrides) {
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for override in read_overrides {
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if case override.rangeStart ... override.rangeEnd = offset {
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@ -34,6 +45,11 @@ final class MemoryInterface: NSObject {
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}
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}
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//If no override, check if there's memory here.
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if(pages[Int(getPage(offset: offset))] == pageMode.null) {
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return 0x00
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}
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//No match.
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return memory[Int(offset)]
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}
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@ -51,6 +67,11 @@ final class MemoryInterface: NSObject {
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}
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}
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//If no override, check if there's memory here to write.
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if(pages[Int(getPage(offset: offset))] != pageMode.rw) {
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return
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}
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memory[Int(offset)] = value
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}
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@ -175,7 +175,8 @@ final class Opcodes: NSObject {
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if(state.status_register.decimal == true) {
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t16 = UInt16(hex2bcd(hex: state.accumulator) + hex2bcd(hex: operand) + (state.status_register.carry ? UInt8(1) : UInt8(0)))
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} else {
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state.status_register.carry = t8 <= 127 ? true : false
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//carry flag isn't being set properly
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state.status_register.carry = (t8 >= 127) ? true : false
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}
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state.accumulator = t8
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Block a user