97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"github.com/hajimehoshi/ebiten"
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"mos6502go/audio"
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"mos6502go/cpu"
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"mos6502go/keyboard"
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"mos6502go/mmu"
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"mos6502go/system"
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"mos6502go/utils"
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"mos6502go/video"
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)
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var showInstructions *bool
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var disableFirmwareWait *bool
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var resetKeysDown bool
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var fpsKeysDown bool
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var breakAddress *uint16
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// checkSpecialKeys checks
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// - ctrl-alt-R has been pressed. Releasing the R does a warm reset
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// - ctrl-alt-F has been pressed, toggling FPS display
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func checkSpecialKeys() {
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if ebiten.IsKeyPressed(ebiten.KeyControl) && ebiten.IsKeyPressed(ebiten.KeyAlt) && ebiten.IsKeyPressed(ebiten.KeyR) {
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resetKeysDown = true
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} else if ebiten.IsKeyPressed(ebiten.KeyControl) && ebiten.IsKeyPressed(ebiten.KeyAlt) && !ebiten.IsKeyPressed(ebiten.KeyR) && resetKeysDown {
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resetKeysDown = false
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cpu.Reset()
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} else {
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resetKeysDown = false
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}
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if ebiten.IsKeyPressed(ebiten.KeyControl) && ebiten.IsKeyPressed(ebiten.KeyAlt) && ebiten.IsKeyPressed(ebiten.KeyF) {
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fpsKeysDown = true
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} else if ebiten.IsKeyPressed(ebiten.KeyControl) && ebiten.IsKeyPressed(ebiten.KeyAlt) && !ebiten.IsKeyPressed(ebiten.KeyF) && fpsKeysDown {
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fpsKeysDown = false
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video.ShowFPS = !video.ShowFPS
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fmt.Println("Toggled")
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} else {
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fpsKeysDown = false
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}
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}
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func update(screen *ebiten.Image) error {
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keyboard.Poll()
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checkSpecialKeys()
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system.FrameCycles = 0
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system.LastAudioCycles = 0
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cpu.Run(*showInstructions, breakAddress, *disableFirmwareWait, system.CpuFrequency/60)
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audio.ForwardToFrameCycle()
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system.Cycles += system.FrameCycles
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system.FrameCycles = 0
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return video.DrawScreen(screen)
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}
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func main() {
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showInstructions = flag.Bool("show-instructions", false, "Show instructions code while running")
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disableFirmwareWait = flag.Bool("disable-wait", false, "Ignore JSRs to firmware wait at $FCA8")
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breakAddressString := flag.String("break", "", "Break on address")
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mute := flag.Bool("mute", false, "Mute sound")
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diskImage := flag.String("image", "", "Disk Image")
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flag.Parse()
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breakAddress = utils.DecodeCmdLineAddress(breakAddressString)
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ebiten.SetRunnableInBackground(true)
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cpu.InitInstructionDecoder()
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mmu.InitRAM()
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mmu.InitApple2eROM()
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mmu.InitIO()
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if *diskImage != "" {
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mmu.ReadDiskImage(*diskImage)
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}
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cpu.Init()
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keyboard.Init()
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video.Init()
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audio.InitEbiten()
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audio.Mute = *mute
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system.Init()
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cpu.Reset()
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ebiten.Run(update, 280*video.ScreenSizeFactor, 192*video.ScreenSizeFactor, 2, "Apple //e")
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}
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