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machine, runtime/interrupt: switch to use register definitions from device/gba

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram
2023-03-05 22:37:56 +01:00
committed by Ayke
parent 4f7864b757
commit 383e7ae14a
2 changed files with 55 additions and 81 deletions
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src/machine/machine_gameboyadvance.go
+20 -22
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@@ -3,8 +3,9 @@
package machine
import (
"device/gba"
"image/color"
"runtime/interrupt"
"runtime/volatile"
"unsafe"
)
@@ -16,40 +17,37 @@ const deviceName = "GBA"
// Interrupt numbers as used on the GameBoy Advance. Register them with
// runtime/interrupt.New.
const (
IRQ_VBLANK = interrupt.IRQ_VBLANK
IRQ_HBLANK = interrupt.IRQ_HBLANK
IRQ_VCOUNT = interrupt.IRQ_VCOUNT
IRQ_TIMER0 = interrupt.IRQ_TIMER0
IRQ_TIMER1 = interrupt.IRQ_TIMER1
IRQ_TIMER2 = interrupt.IRQ_TIMER2
IRQ_TIMER3 = interrupt.IRQ_TIMER3
IRQ_COM = interrupt.IRQ_COM
IRQ_DMA0 = interrupt.IRQ_DMA0
IRQ_DMA1 = interrupt.IRQ_DMA1
IRQ_DMA2 = interrupt.IRQ_DMA2
IRQ_DMA3 = interrupt.IRQ_DMA3
IRQ_KEYPAD = interrupt.IRQ_KEYPAD
IRQ_GAMEPAK = interrupt.IRQ_GAMEPAK
IRQ_VBLANK = gba.IRQ_VBLANK
IRQ_HBLANK = gba.IRQ_HBLANK
IRQ_VCOUNT = gba.IRQ_VCOUNT
IRQ_TIMER0 = gba.IRQ_TIMER0
IRQ_TIMER1 = gba.IRQ_TIMER1
IRQ_TIMER2 = gba.IRQ_TIMER2
IRQ_TIMER3 = gba.IRQ_TIMER3
IRQ_COM = gba.IRQ_COM
IRQ_DMA0 = gba.IRQ_DMA0
IRQ_DMA1 = gba.IRQ_DMA1
IRQ_DMA2 = gba.IRQ_DMA2
IRQ_DMA3 = gba.IRQ_DMA3
IRQ_KEYPAD = gba.IRQ_KEYPAD
IRQ_GAMEPAK = gba.IRQ_GAMEPAK
)
// Make it easier to directly write to I/O RAM.
var ioram = (*[0x400]volatile.Register8)(unsafe.Pointer(uintptr(0x04000000)))
// Set has not been implemented.
func (p Pin) Set(value bool) {
// do nothing
}
var Display = FramebufDisplay{(*[160][240]volatile.Register16)(unsafe.Pointer(uintptr(0x06000000)))}
var Display = FramebufDisplay{(*[160][240]volatile.Register16)(unsafe.Pointer(uintptr(gba.MEM_VRAM)))}
type FramebufDisplay struct {
port *[160][240]volatile.Register16
}
func (d FramebufDisplay) Configure() {
// Write into the I/O registers, setting video display parameters.
ioram[0].Set(0x03) // Use video mode 3 (in BG2, a 16bpp bitmap in VRAM)
ioram[1].Set(0x04) // Enable BG2 (BG0 = 1, BG1 = 2, BG2 = 4, ...)
// Use video mode 3 (in BG2, a 16bpp bitmap in VRAM) and Enable BG2
gba.DISP.DISPCNT.Set(gba.DISPCNT_BGMODE_3<<gba.DISPCNT_BGMODE_Pos |
gba.DISPCNT_SCREENDISPLAY_BG2_ENABLE<<gba.DISPCNT_SCREENDISPLAY_BG2_Pos)
}
func (d FramebufDisplay) Size() (x, y int16) {