mirror of
https://github.com/ivanizag/izapple2.git
synced 2024-12-12 21:29:06 +00:00
272 lines
6.8 KiB
Go
272 lines
6.8 KiB
Go
package izapple2
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import (
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"fmt"
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)
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/*
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Mouse card implementation. Does not emulate a real card, only the behaviour. Idea taken
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from aiie (https://hackaday.io/project/19925-aiie-an-embedded-apple-e-emulator/log/188017-entry-23-here-mousie-mousie-mousie)
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See:
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https://www.apple.asimov.net/documentation/hardware/io/AppleMouse%20II%20User%27s%20Manual.pdf
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https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Digitizers/Apple%20Mouse%20Interface%20Card/Documentation/Apple%20II%20Mouse%20Technical%20Notes.pdf
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http://www.1000bit.it/support/manuali/apple/technotes/mous/tn.mous.2.html
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The management of IN# and PR# is copied from cardInOut
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Not compatible with A2OSX that needs interrupts on VBL
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*/
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// CardMouse represents a SmartPort card
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type CardMouse struct {
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cardBase
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lastX, lastY uint16
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lastPressed bool
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minX, minY, maxX, maxY uint16
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mode uint8
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response string
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iOut int
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iIn int
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}
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func newCardMouseBuilder() *cardBuilder {
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return &cardBuilder{
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name: "Mouse Card",
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description: "Mouse card implementation, does not emulate a real card, only the firmware behaviour",
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buildFunc: func(params map[string]string) (Card, error) {
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return &CardMouse{
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maxX: 0x3ff,
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maxY: 0x3ff,
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}, nil
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},
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}
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}
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const (
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mouseXLo = uint16(0x478)
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mouseYLo = uint16(0x4f8)
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mouseXHi = uint16(0x578)
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mouseYHi = uint16(0x5f8)
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mouseStatus = uint16(0x778)
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mouseMode = uint16(0x7f8)
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)
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const (
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mouseModeEnabled = uint8(1)
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mouseModeIntMoveEnabled = uint8(2)
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mouseModeIntButtonEnabled = uint8(4)
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mouseModeIntVBlankEnabled = uint8(8)
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)
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func (c *CardMouse) set(field uint16, value uint8) {
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// Update the card screen-holes
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c.a.mmu.Poke(field+uint16(c.slot), value)
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}
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func (c *CardMouse) get(field uint16) uint8 {
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// Read from the card screen-holes
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return c.a.mmu.Peek(field /*+ uint16(c.slot)*/)
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}
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func (c *CardMouse) setMode(mode uint8) {
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c.mode = mode
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enabled := mode&mouseModeEnabled == 1
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moveInts := mode&mouseModeIntMoveEnabled == 1
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buttonInts := mode&mouseModeIntButtonEnabled == 1
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vBlankInts := mode&mouseModeIntVBlankEnabled == 1
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c.tracef("Mode set to 0x%02x. Enabled %v. Interrups: move=%v, button=%v, vblank=%v.\n",
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mode, enabled, moveInts, buttonInts, vBlankInts)
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if moveInts || buttonInts || vBlankInts {
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panic("Mouse interrupts not implemented")
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}
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}
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func (c *CardMouse) checkFromFirmware() {
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pc, _ := c.a.cpu.GetPCAndSP()
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if (pc >> 8) != 0xc0+uint16(c.slot) {
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c.tracef("Softswitch access from outside the firmware. It will not work.\n")
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}
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}
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func (c *CardMouse) readMouse() (uint16, uint16, bool) {
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x, y, pressed := c.a.io.mouse.ReadMouse()
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xTrans := uint16(uint64(c.maxX-c.minX) * uint64(x) / 65536)
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yTrans := uint16(uint64(c.maxY-c.minY) * uint64(y) / 65536)
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return xTrans, yTrans, pressed
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}
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func (c *CardMouse) assign(a *Apple2, slot int) {
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a.usesMouse = true
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c.addCardSoftSwitchR(0, func() uint8 {
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c.checkFromFirmware()
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if c.iOut == 0 {
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// Create a new response
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x, y, pressed := c.readMouse()
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button := 1
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if !pressed {
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button += 2
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}
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if !c.lastPressed {
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button++
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}
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keyboard := "+"
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strobed := (c.a.io.softSwitchesData[ioDataKeyboard] & (1 << 7)) == 0
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if !strobed {
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keyboard = "-"
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}
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c.response = fmt.Sprintf("%v,%v,%v%v\r", x, y, keyboard, button)
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}
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value := uint8(c.response[c.iOut])
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c.iOut++
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if c.iOut == len(c.response) {
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c.iOut = 0
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}
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value += 0x80
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c.tracef("IN#%v -> %02x.\n", slot, value)
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return value
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}, "MOUSEOUT")
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c.addCardSoftSwitchW(1, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("PR#%v <- %02x\n", slot, value)
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if c.iIn == 0 {
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// We care only about the first byte
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c.setMode(value & 0x0f)
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}
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c.iIn++
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if value == 13 {
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c.iIn = 0 // Ready for the next command
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}
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}, "MOUSEIN")
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c.addCardSoftSwitchW(2, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("SetMouse(0x%02v)\n", value)
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c.setMode(value & 0x0f)
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}, "SETMOUSE")
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c.addCardSoftSwitchW(3, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("ServeMouse() NOT IMPLEMENTED\n")
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panic("Mouse interrupts not implemented")
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}, "SERVEMOUSE")
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c.addCardSoftSwitchW(4, func(value uint8) {
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c.checkFromFirmware()
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if c.mode&mouseModeEnabled == 1 {
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x, y, pressed := c.readMouse()
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status := uint8(0)
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if pressed {
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status |= 1 << 7
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}
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if c.lastPressed {
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status |= 1 << 6
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}
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if (x != c.lastX) || (y != c.lastY) {
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status |= 1 << 5
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}
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c.set(mouseXHi, uint8(x>>8))
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c.set(mouseYHi, uint8(y>>8))
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c.set(mouseXLo, uint8(x))
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c.set(mouseYLo, uint8(y))
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c.set(mouseStatus, status)
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c.set(mouseMode, c.mode)
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if (status&(1<<5) != 0) || (pressed != c.lastPressed) {
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c.tracef("ReadMouse(): x: %v, y: %v, pressed: %v\n",
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x, y, pressed)
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}
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c.lastX = x
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c.lastY = y
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c.lastPressed = pressed
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}
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}, "READMOUSE")
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c.addCardSoftSwitchW(5, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("ClearMouse() NOT IMPLEMENTED\n")
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c.set(mouseXHi, 0)
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c.set(mouseYHi, 0)
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c.set(mouseXLo, 0)
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c.set(mouseYLo, 0)
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}, "CLEARMOUSE")
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c.addCardSoftSwitchW(6, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("PosMouse() NOT IMPLEMENTED\n")
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}, "POSMOUSE")
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c.addCardSoftSwitchW(7, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("ClampMouse(%v)\n", value)
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if value == 0 {
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c.minX = uint16(c.get(mouseXLo)) + uint16(c.get(mouseXHi))<<8
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c.maxX = uint16(c.get(mouseYLo)) + uint16(c.get(mouseYHi))<<8
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} else if value == 1 {
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c.minY = uint16(c.get(mouseXLo)) + uint16(c.get(mouseXHi))<<8
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c.maxY = uint16(c.get(mouseYLo)) + uint16(c.get(mouseYHi))<<8
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}
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c.tracef("Current bounds: X[%v-%v], Y[%v-%v],\n", c.minX, c.maxX, c.minY, c.maxY)
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}, "CLAMPMOUSE")
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c.addCardSoftSwitchW(8, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("HomeMouse() NOT IMPLEMENTED\n")
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}, "HOMEMOUSE")
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c.addCardSoftSwitchW(9, func(value uint8) {
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c.checkFromFirmware()
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c.tracef("InitMouse()\n")
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c.minX = 0
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c.minY = 0
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c.maxX = 0x3ff
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c.maxY = 0x3ff
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c.mode = 0
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}, "INITMOUSE")
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c.addCardSoftSwitchW(0xc, func(value uint8) {
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c.checkFromFirmware()
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// See http://www.1000bit.it/support/manuali/apple/technotes/mous/tn.mous.2.html
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c.tracef("TimeData(%v) NOT IMPLEMENTED\n", value)
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}, "TIMEDATEMOUSE")
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data := buildBaseInOutRom(slot)
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c.romCsxx = newMemoryRangeROM(0xC200, data, "Mouse card")
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// Identification as a mouse card
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// From Technical Note Misc #8, "Pascal 1.1 Firmware Protocol ID Bytes":
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data[0x05] = 0x38
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data[0x07] = 0x18
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data[0x0b] = 0x01
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data[0x0c] = 0x20
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// From "AppleMouse // User's Manual", Appendix B:
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data[0xfb] = 0xd6
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// Set 8 entrypoints to sofstwitches 2 to 1f
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for i := uint8(0); i < 14; i++ {
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base := 0x60 + 0x05*i
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data[0x12+i] = base
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data[base+0] = 0x8D // STA $C0x2
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data[base+1] = 0x82 + i + uint8(slot<<4)
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data[base+2] = 0xC0
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data[base+3] = 0x18 // CLC ;no error
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data[base+4] = 0x60 // RTS
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}
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c.cardBase.assign(a, slot)
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}
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