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enable vertical interrupts and set status last

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This commit is contained in:
Connor Olding 2018-08-24 05:15:51 +02:00
parent 8aab789a24
commit 7904aaa05a
1 changed files with 4 additions and 4 deletions
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8
inc/n64_vi.inc
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@ -54,13 +54,11 @@ constant VI_MPAL_CLOCK(48628316) // MPAL: Hz = 48.628316 MHz
macro ScreenNTSC(width,height, status, origin) {
lui a0,VI_BASE // A0 = VI Base Register ($A4400000)
li t0,{status} // T0 = Status/Control
sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
la t0,{origin} // T0 = Origin (Frame Buffer Origin In Bytes)
sw t0,VI_ORIGIN(a0) // Store Origin To VI Origin Register ($A4400004)
lli t0,{width} // T0 = Width (Frame Buffer Line Width In Pixels)
sw t0,VI_WIDTH(a0) // Store Width To VI Width Register ($A4400008)
lli t0,$200 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $200)
lli t0,$2 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $2)
sw t0,VI_V_INTR(a0) // Store Vertical Interrupt To VI Interrupt Register ($A440000C)
lli t0,0 // T0 = Current Vertical Line (Current Half-Line, Sampled Once Per Line = 0)
sw t0,VI_V_CURRENT_LINE(a0) // Store Current Vertical Line To VI Current Register ($A4400010)
@ -82,6 +80,8 @@ macro ScreenNTSC(width,height, status, origin) {
sw t0,VI_X_SCALE(a0) // Store X-Scale To VI X Scale Register ($A4400030)
lli t0,($100*({height}/60)) // T0 = Y-Scale (Vertical Subpixel Offset In 2.10 Format = 0, 1/Vertical Scale Up Factor In 2.10 Format)
sw t0,VI_Y_SCALE(a0) // Store Y-Scale To VI Y Scale Register ($A4400034)
li t0,{status} // T0 = Status/Control
sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
}
macro ScreenPAL(width,height, status, origin) {
@ -90,7 +90,7 @@ macro ScreenPAL(width,height, status, origin) {
sw t0,VI_ORIGIN(a0) // Store Origin To VI Origin Register ($A4400004)
lli t0,{width} // T0 = Width (Frame Buffer Line Width In Pixels)
sw t0,VI_WIDTH(a0) // Store Width To VI Width Register ($A4400008)
lli t0,$200 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $200)
lli t0,$2 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $2)
//lli t0,2
sw t0,VI_V_INTR(a0) // Store Vertical Interrupt To VI Interrupt Register ($A440000C)
lli t0,0 // T0 = Current Vertical Line (Current Half-Line, Sampled Once Per Line = 0)