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deadprogram
65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
//go:build gameboyadvance
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package machine
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import (
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"device/gba"
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"image/color"
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"runtime/volatile"
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"unsafe"
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)
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// Not sure what name to pick here. Not using ARM7TDMI because that's the CPU
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// name, not the device name.
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const deviceName = "GBA"
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// Interrupt numbers as used on the GameBoy Advance. Register them with
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// runtime/interrupt.New.
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const (
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IRQ_VBLANK = gba.IRQ_VBLANK
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IRQ_HBLANK = gba.IRQ_HBLANK
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IRQ_VCOUNT = gba.IRQ_VCOUNT
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IRQ_TIMER0 = gba.IRQ_TIMER0
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IRQ_TIMER1 = gba.IRQ_TIMER1
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IRQ_TIMER2 = gba.IRQ_TIMER2
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IRQ_TIMER3 = gba.IRQ_TIMER3
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IRQ_COM = gba.IRQ_COM
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IRQ_DMA0 = gba.IRQ_DMA0
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IRQ_DMA1 = gba.IRQ_DMA1
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IRQ_DMA2 = gba.IRQ_DMA2
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IRQ_DMA3 = gba.IRQ_DMA3
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IRQ_KEYPAD = gba.IRQ_KEYPAD
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IRQ_GAMEPAK = gba.IRQ_GAMEPAK
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)
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// Set has not been implemented.
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func (p Pin) Set(value bool) {
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// do nothing
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}
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var Display = DisplayMode3{(*[160][240]volatile.Register16)(unsafe.Pointer(uintptr(gba.MEM_VRAM)))}
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type DisplayMode3 struct {
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port *[160][240]volatile.Register16
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}
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func (d *DisplayMode3) Configure() {
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// Use video mode 3 (in BG2, a 16bpp bitmap in VRAM) and Enable BG2
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gba.DISP.DISPCNT.Set(gba.DISPCNT_BGMODE_3<<gba.DISPCNT_BGMODE_Pos |
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gba.DISPCNT_SCREENDISPLAY_BG2_ENABLE<<gba.DISPCNT_SCREENDISPLAY_BG2_Pos)
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}
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func (d *DisplayMode3) Size() (x, y int16) {
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return 240, 160
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}
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func (d *DisplayMode3) SetPixel(x, y int16, c color.RGBA) {
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d.port[y][x].Set((uint16(c.R) >> 3) | ((uint16(c.G) >> 3) << 5) | ((uint16(c.B) >> 3) << 10))
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}
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func (d *DisplayMode3) Display() error {
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// Nothing to do here.
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return nil
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}
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