mirror of https://github.com/irmen/ksim65.git
411 lines
15 KiB
Kotlin
411 lines
15 KiB
Kotlin
package razorvine.examplemachine
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import razorvine.ksim65.Bus
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import razorvine.ksim65.Cpu6502
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import java.awt.*
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import java.awt.image.BufferedImage
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import javax.imageio.ImageIO
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import javax.swing.event.MouseInputListener
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import razorvine.ksim65.IHostInterface
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import razorvine.ksim65.IVirtualMachine
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import java.awt.event.*
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import java.util.*
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import javax.swing.*
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import javax.swing.Timer
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/**
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* Define a monochrome screen that can display 640x480 pixels
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* and/or 80x30 characters (these are 8x16 pixels).
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*/
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object ScreenDefs {
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const val SCREEN_WIDTH_CHARS = 80
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const val SCREEN_HEIGHT_CHARS = 30
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const val SCREEN_WIDTH = SCREEN_WIDTH_CHARS * 8
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const val SCREEN_HEIGHT = SCREEN_HEIGHT_CHARS * 16
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const val DISPLAY_PIXEL_SCALING: Double = 1.25
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val BG_COLOR = Color(0, 10, 20)
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val FG_COLOR = Color(200, 255, 230)
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val BORDER_COLOR = Color(20, 30, 40)
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val Characters = loadCharacters()
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private fun loadCharacters(): Array<BufferedImage> {
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val img = ImageIO.read(javaClass.getResourceAsStream("/charset/unscii8x16.png"))
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val charactersImage = BufferedImage(img.width, img.height, BufferedImage.TYPE_INT_ARGB)
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charactersImage.createGraphics().drawImage(img, 0, 0, null)
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val black = Color(0, 0, 0).rgb
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val foreground = FG_COLOR.rgb
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val nopixel = Color(0, 0, 0, 0).rgb
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for (y in 0 until charactersImage.height) {
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for (x in 0 until charactersImage.width) {
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val col = charactersImage.getRGB(x, y)
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if (col == black)
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charactersImage.setRGB(x, y, nopixel)
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else
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charactersImage.setRGB(x, y, foreground)
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}
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}
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val numColumns = charactersImage.width / 8
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val charImages = (0..255).map {
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val charX = it % numColumns
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val charY = it / numColumns
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charactersImage.getSubimage(charX * 8, charY * 16, 8, 16)
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}
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return charImages.toTypedArray()
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}
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}
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private class BitmapScreenPanel : JPanel() {
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private val image = BufferedImage(ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT, BufferedImage.TYPE_INT_ARGB)
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private val g2d = image.graphics as Graphics2D
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private var cursorX: Int = 0
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private var cursorY: Int = 0
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private var cursorState: Boolean = false
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init {
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val size = Dimension(
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(image.width * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt(),
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(image.height * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt()
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)
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minimumSize = size
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maximumSize = size
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preferredSize = size
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clearScreen()
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isFocusable = true
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requestFocusInWindow()
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}
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override fun paint(graphics: Graphics?) {
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val g2d = graphics as Graphics2D?
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g2d!!.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF)
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g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE)
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g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC)
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g2d.drawImage(
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image, 0, 0, (image.width * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt(),
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(image.height * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt(), null
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)
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if(cursorState) {
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val scx = (cursorX * ScreenDefs.DISPLAY_PIXEL_SCALING * 8).toInt()
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val scy = (cursorY * ScreenDefs.DISPLAY_PIXEL_SCALING * 16).toInt()
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val scw = (8 * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt()
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val sch = (16 * ScreenDefs.DISPLAY_PIXEL_SCALING).toInt()
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g2d.setXORMode(Color.CYAN)
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g2d.fillRect(scx, scy, scw, sch)
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g2d.setPaintMode()
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}
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}
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fun clearScreen() {
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g2d.background = ScreenDefs.BG_COLOR
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g2d.clearRect(0, 0, ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT)
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cursorPos(0, 0)
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}
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fun setPixel(x: Int, y: Int, onOff: Boolean) {
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if (onOff)
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image.setRGB(x, y, ScreenDefs.FG_COLOR.rgb)
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else
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image.setRGB(x, y, ScreenDefs.BG_COLOR.rgb)
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}
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fun getPixel(x: Int, y: Int) = image.getRGB(x, y) != ScreenDefs.BG_COLOR.rgb
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fun setChar(x: Int, y: Int, character: Char) {
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g2d.clearRect(8 * x, 16 * y, 8, 16)
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val coloredImage = ScreenDefs.Characters[character.toInt()]
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g2d.drawImage(coloredImage, 8 * x, 16 * y, null)
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}
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fun scrollUp() {
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g2d.copyArea(0, 16, ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT - 16, 0, -16)
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g2d.background = ScreenDefs.BG_COLOR
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g2d.clearRect(0, ScreenDefs.SCREEN_HEIGHT - 16, ScreenDefs.SCREEN_WIDTH, 16)
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}
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fun mousePixelPosition(): Point? {
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val pos = mousePosition ?: return null
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return Point(
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(pos.x / ScreenDefs.DISPLAY_PIXEL_SCALING).toInt(),
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(pos.y / ScreenDefs.DISPLAY_PIXEL_SCALING).toInt()
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)
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}
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fun cursorPos(x: Int, y: Int) {
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if(x!=cursorX || y!=cursorY)
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cursorState=true
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cursorX = x
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cursorY = y
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}
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fun blinkCursor() {
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cursorState = !cursorState
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}
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}
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class DebugWindow(val vm: IVirtualMachine) : JFrame("debugger"), ActionListener {
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val cyclesTf = JTextField("00000000000000")
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val speedKhzTf = JTextField("0000000")
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val regAtf = JTextField("000")
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val regXtf = JTextField("000")
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val regYtf = JTextField("000")
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val regPCtf = JTextField("00000")
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val regSPtf = JTextField("000")
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val regPtf = JTextArea("NV-BDIZC\n000000000")
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val disassemTf = JTextField("00 00 00 lda (fffff),x")
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private val pauseBt = JButton("Pause").also { it.actionCommand = "pause" }
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init {
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defaultCloseOperation = EXIT_ON_CLOSE
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preferredSize = Dimension(350, 500)
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val cpuPanel = JPanel(GridBagLayout())
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cpuPanel.border = BorderFactory.createTitledBorder("CPU: ${vm.cpu.name}")
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val gc = GridBagConstraints()
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gc.insets = Insets(4, 4, 4, 4)
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gc.anchor = GridBagConstraints.EAST
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gc.gridx = 0
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gc.gridy = 0
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val cyclesLb = JLabel("cycles")
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val speedKhzLb = JLabel("speed (kHz)")
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val regAlb = JLabel("A")
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val regXlb = JLabel("X")
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val regYlb = JLabel("Y")
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val regSPlb = JLabel("SP")
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val regPClb = JLabel("PC")
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val regPlb = JLabel("Status")
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val disassemLb = JLabel("Instruction")
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listOf(cyclesLb, speedKhzLb, regAlb, regXlb, regYlb, regSPlb, regPClb, regPlb, disassemLb).forEach {
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cpuPanel.add(it, gc)
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gc.gridy++
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}
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gc.anchor = GridBagConstraints.WEST
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gc.gridx = 1
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gc.gridy = 0
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listOf(cyclesTf, speedKhzTf, regAtf, regXtf, regYtf, regSPtf, regPCtf, regPtf, disassemTf).forEach {
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it.font = Font(Font.MONOSPACED, Font.PLAIN, 14)
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it.isEditable = false
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if(it is JTextField) {
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it.columns = it.text.length
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} else if(it is JTextArea) {
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it.background = this.background
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it.border = BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY),
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BorderFactory.createEmptyBorder(2,2,2,2))
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}
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cpuPanel.add(it, gc)
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gc.gridy++
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}
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add(cpuPanel, BorderLayout.NORTH)
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val buttonPanel = JPanel(FlowLayout())
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buttonPanel.border = BorderFactory.createTitledBorder("Control")
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val resetBt = JButton("Reset").also { it.actionCommand = "reset" }
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val cycleBt = JButton("Step").also { it.actionCommand = "step" }
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val irqBt = JButton("IRQ").also { it.actionCommand = "irq" }
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val nmiBt = JButton("NMI").also { it.actionCommand = "nmi" }
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val quitBt = JButton("Quit").also { it.actionCommand = "quit" }
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listOf(resetBt, cycleBt, irqBt, nmiBt, pauseBt, quitBt).forEach {
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it.addActionListener(this)
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buttonPanel.add(it)
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}
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add(buttonPanel, BorderLayout.CENTER)
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pack()
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}
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override fun actionPerformed(e: ActionEvent) {
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when(e.actionCommand) {
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"reset" -> {
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vm.bus.reset()
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updateCpu(vm.cpu, vm.bus)
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}
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"step" -> {
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vm.stepInstruction()
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updateCpu(vm.cpu, vm.bus)
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}
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"pause" -> {
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vm.paused = true
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pauseBt.actionCommand = "continue"
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pauseBt.text = "Cont."
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}
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"continue" -> {
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vm.paused = false
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pauseBt.actionCommand = "pause"
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pauseBt.text = "Pause"
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}
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"irq" -> vm.cpu.irq()
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"nmi" -> vm.cpu.nmi()
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"quit" -> {
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dispatchEvent(WindowEvent(this, WindowEvent.WINDOW_CLOSING))
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}
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}
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}
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fun updateCpu(cpu: Cpu6502, bus: Bus) {
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cyclesTf.text = cpu.totalCycles.toString()
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regAtf.text = cpu.hexB(cpu.regA)
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regXtf.text = cpu.hexB(cpu.regX)
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regYtf.text = cpu.hexB(cpu.regY)
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regPtf.text = "NV-BDIZC\n" + cpu.regP.asByte().toString(2).padStart(8, '0')
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regPCtf.text = cpu.hexW(cpu.regPC)
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regSPtf.text = cpu.hexB(cpu.regSP)
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val memory = bus.memoryComponentFor(cpu.regPC)
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disassemTf.text = cpu.disassembleOneInstruction(memory.data, cpu.regPC, memory.startAddress).first.substringAfter(' ').trim()
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}
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}
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class MainWindow(title: String) : JFrame(title), KeyListener, MouseInputListener, IHostInterface {
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private val canvas = BitmapScreenPanel()
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val keyboardBuffer = ArrayDeque<Char>()
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var mousePos = Point(0, 0)
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var leftButton = false
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var rightButton = false
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var middleButton = false
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init {
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val borderWidth = 16
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layout = GridBagLayout()
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defaultCloseOperation = EXIT_ON_CLOSE
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isResizable = false
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isFocusable = true
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// the borders (top, left, right, bottom)
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val borderTop = JPanel().apply {
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preferredSize = Dimension(
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(ScreenDefs.DISPLAY_PIXEL_SCALING * (ScreenDefs.SCREEN_WIDTH + 2 * borderWidth)).toInt(),
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(ScreenDefs.DISPLAY_PIXEL_SCALING * borderWidth).toInt()
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)
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background = ScreenDefs.BORDER_COLOR
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}
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val borderBottom = JPanel().apply {
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preferredSize = Dimension(
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(ScreenDefs.DISPLAY_PIXEL_SCALING * (ScreenDefs.SCREEN_WIDTH + 2 * borderWidth)).toInt(),
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(ScreenDefs.DISPLAY_PIXEL_SCALING * borderWidth).toInt()
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)
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background = ScreenDefs.BORDER_COLOR
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}
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val borderLeft = JPanel().apply {
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preferredSize = Dimension(
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(ScreenDefs.DISPLAY_PIXEL_SCALING * borderWidth).toInt(),
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(ScreenDefs.DISPLAY_PIXEL_SCALING * ScreenDefs.SCREEN_HEIGHT).toInt()
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)
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background = ScreenDefs.BORDER_COLOR
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}
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val borderRight = JPanel().apply {
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preferredSize = Dimension(
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(ScreenDefs.DISPLAY_PIXEL_SCALING * borderWidth).toInt(),
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(ScreenDefs.DISPLAY_PIXEL_SCALING * ScreenDefs.SCREEN_HEIGHT).toInt()
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)
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background = ScreenDefs.BORDER_COLOR
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}
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var c = GridBagConstraints()
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c.gridx = 0; c.gridy = 1; c.gridwidth = 3
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add(borderTop, c)
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c = GridBagConstraints()
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c.gridx = 0; c.gridy = 2
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add(borderLeft, c)
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c = GridBagConstraints()
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c.gridx = 2; c.gridy = 2
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add(borderRight, c)
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c = GridBagConstraints()
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c.gridx = 0; c.gridy = 3; c.gridwidth = 3
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add(borderBottom, c)
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// the screen canvas(bitmap)
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c = GridBagConstraints()
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c.gridx = 1; c.gridy = 2
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add(canvas, c)
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addKeyListener(this)
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addMouseMotionListener(this)
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addMouseListener(this)
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pack()
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setLocationRelativeTo(null)
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setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, mutableSetOf())
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requestFocusInWindow()
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}
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fun start() {
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// repaint the screen's back buffer ~60 times per second
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var cursorBlink = 0L
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val repaintTimer = Timer(1000 / 60) {
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repaint()
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if(it.`when` - cursorBlink > 200L) {
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cursorBlink = it.`when`
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canvas.blinkCursor()
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}
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}
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repaintTimer.initialDelay = 0
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repaintTimer.start()
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}
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// keyboard events:
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override fun keyTyped(event: KeyEvent) {
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keyboardBuffer.add(event.keyChar)
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while (keyboardBuffer.size > 8)
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keyboardBuffer.pop()
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}
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override fun keyPressed(event: KeyEvent) {}
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override fun keyReleased(event: KeyEvent) {}
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// mouse events:
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override fun mousePressed(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null)
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return
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else {
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mousePos = pos
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leftButton = leftButton or SwingUtilities.isLeftMouseButton(event)
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rightButton = rightButton or SwingUtilities.isRightMouseButton(event)
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middleButton = middleButton or SwingUtilities.isMiddleMouseButton(event)
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}
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}
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override fun mouseReleased(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null)
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return
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else {
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mousePos = pos
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leftButton = leftButton xor SwingUtilities.isLeftMouseButton(event)
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rightButton = rightButton xor SwingUtilities.isRightMouseButton(event)
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middleButton = middleButton xor SwingUtilities.isMiddleMouseButton(event)
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}
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}
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override fun mouseEntered(event: MouseEvent) {}
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override fun mouseExited(event: MouseEvent) {}
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override fun mouseDragged(event: MouseEvent) = mouseMoved(event)
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override fun mouseClicked(event: MouseEvent) {}
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override fun mouseMoved(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null)
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return
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else
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mousePos = pos
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}
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// the overrides required for IHostDisplay:
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override fun clearScreen() = canvas.clearScreen()
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override fun setPixel(x: Int, y: Int) = canvas.setPixel(x, y, true)
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override fun clearPixel(x: Int, y: Int) = canvas.setPixel(x, y, false)
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override fun getPixel(x: Int, y: Int) = canvas.getPixel(x, y)
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override fun setChar(x: Int, y: Int, character: Char) = canvas.setChar(x, y, character)
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override fun cursor(x: Int, y: Int) = canvas.cursorPos(x, y)
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override fun scrollUp() = canvas.scrollUp()
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override fun mouse() = IHostInterface.MouseInfo(mousePos.x, mousePos.y, leftButton, rightButton, middleButton)
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override fun keyboard(): Char? {
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return if (keyboardBuffer.isEmpty())
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null
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else
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keyboardBuffer.pop()
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}
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}
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