130 lines
8.8 KiB
PHP
130 lines
8.8 KiB
PHP
constant VI_BASE($A440) // $04400000 Video Interface (VI) Base
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constant VI_STATUS($00) // $04400000 Status/Control
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constant VI_ORIGIN($04) // $04400004 Origin
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constant VI_WIDTH($08) // $04400008 Width
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constant VI_V_INTR($0C) // $0440000C Vertical Interrupt
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constant VI_V_CURRENT_LINE($10) // $04400010 Current Vertical Line
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constant VI_TIMING($14) // $04400014 Video Timing
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constant VI_V_SYNC($18) // $04400018 Vertical Sync
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constant VI_H_SYNC($1C) // $0440001C Horizontal Sync
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constant VI_H_SYNC_LEAP($20) // $04400020 Horizontal Sync Leap
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constant VI_H_VIDEO($24) // $04400024 Horizontal Video
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constant VI_V_VIDEO($28) // $04400028 Vertical Video
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constant VI_V_BURST($2C) // $0440002C Vertical Burst
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constant VI_X_SCALE($30) // $04400030 X-Scale
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constant VI_Y_SCALE($34) // $04400034 Y-Scale
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// VI Status Flags (lower halfword)
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constant BPP0($0000) // Color Depth Blank (No Data Or Sync)
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//*RESERVED*($0001) // Color Depth Reserved
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constant BPP16($0002) // Color Depth 16BPP R5/G5/B5/A1
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constant BPP32($0003) // Color Depth 32BPP R8/G8/B8/A8
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constant GAMMA_DITHER_EN($0004) // Gamma Dither Enable (Requires: Gamma Enable)
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constant GAMMA_EN($0008) // Gamma Enable (Gamma Boost For YUV Images)
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constant DIVOT_EN($0010) // Divot Enable (Used With Anti-alias)
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constant VBUS_CLK_EN($0020) // Video Bus Clock Enable
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constant INTERLACE($0040) // Interlace/Serrate (Used With Interlaced Display)
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constant TST_MODE($0080) // Test Mode
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constant AA_MODE_0($0000) // AA Mode 0 = Antialias & Resample (Always Fetch Extra Lines)
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constant AA_MODE_1($0100) // AA Mode 1 = Antialias & Resample (Fetch Extra Lines When Needed)
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constant AA_MODE_2($0200) // AA Mode 2 = Resample Only
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constant AA_MODE_3($0300) // AA Mode 3 = Replicate Pixels & No Interpolation
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constant DIAG_0($0400) // Diagnotic 0
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constant DIAG_1($0800) // Diagnotic 1
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constant PIXEL_ADV_0($0000) // Pixel Advance 0
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constant PIXEL_ADV_1($1000) // Pixel Advance 1
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constant PIXEL_ADV_2($2000) // Pixel Advance 2
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constant PIXEL_ADV_3($3000) // Pixel Advance 3
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constant PIXEL_ADV_4($4000) // Pixel Advance 4
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constant PIXEL_ADV_5($5000) // Pixel Advance 5
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constant PIXEL_ADV_6($6000) // Pixel Advance 6
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constant PIXEL_ADV_7($7000) // Pixel Advance 7
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constant PIXEL_ADV_8($8000) // Pixel Advance 8
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constant PIXEL_ADV_9($9000) // Pixel Advance 9
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constant PIXEL_ADV_A($A000) // Pixel Advance A
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constant PIXEL_ADV_B($B000) // Pixel Advance B
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constant PIXEL_ADV_C($C000) // Pixel Advance C
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constant PIXEL_ADV_D($D000) // Pixel Advance D
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constant PIXEL_ADV_E($E000) // Pixel Advance E
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constant PIXEL_ADV_F($F000) // Pixel Advance F
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// VI Status Flags (upper halfword)
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constant DITHER_FILTER_EN($10000) // Dither Filter Enable (Used With 16BPP Display)
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constant VI_NTSC_CLOCK(48681812) // NTSC: Hz = 48.681812 MHz
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constant VI_PAL_CLOCK(49656530) // PAL: Hz = 49.656530 MHz
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constant VI_MPAL_CLOCK(48628316) // MPAL: Hz = 48.628316 MHz
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macro ScreenNTSC(width,height, status, origin) {
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lui a0,VI_BASE // A0 = VI Base Register ($A4400000)
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la t0,{origin} // T0 = Origin (Frame Buffer Origin In Bytes)
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sw t0,VI_ORIGIN(a0) // Store Origin To VI Origin Register ($A4400004)
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lli t0,{width} // T0 = Width (Frame Buffer Line Width In Pixels)
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sw t0,VI_WIDTH(a0) // Store Width To VI Width Register ($A4400008)
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lli t0,$2 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $2)
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sw t0,VI_V_INTR(a0) // Store Vertical Interrupt To VI Interrupt Register ($A440000C)
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lli t0,0 // T0 = Current Vertical Line (Current Half-Line, Sampled Once Per Line = 0)
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sw t0,VI_V_CURRENT_LINE(a0) // Store Current Vertical Line To VI Current Register ($A4400010)
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li t0,$3E52239 // T0 = Video Timing (Start Of Color Burst In Pixels from H-Sync = 3, Vertical Sync Width In Half Lines = 229, Color Burst Width In Pixels = 34, Horizontal Sync Width In Pixels = 57)
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sw t0,VI_TIMING(a0) // Store Video Timing To VI Burst Register ($A4400014)
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lli t0,$20D // T0 = Vertical Sync (Number Of Half-Lines Per Field = 525)
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sw t0,VI_V_SYNC(a0) // Store Vertical Sync To VI V Sync Register ($A4400018)
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lli t0,$C15 // T0 = Horizontal Sync (5-bit Leap Pattern Used For PAL only = 0, Total Duration Of A Line In 1/4 Pixel = 3093)
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sw t0,VI_H_SYNC(a0) // Store Horizontal Sync To VI H Sync Register ($A440001C)
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li t0,$C150C15 // T0 = Horizontal Sync Leap (Identical To H Sync = 3093, Identical To H Sync = 3093)
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sw t0,VI_H_SYNC_LEAP(a0) // Store Horizontal Sync Leap To VI Leap Register ($A4400020)
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li t0,$6C02EC // T0 = Horizontal Video (Start Of Active Video In Screen Pixels = 108, End Of Active Video In Screen Pixels = 748)
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sw t0,VI_H_VIDEO(a0) // Store Horizontal Video To VI H Start Register ($A4400024)
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li t0,$2501FF // T0 = Vertical Video (Start Of Active Video In Screen Half-Lines = 37, End Of Active Video In Screen Half-Lines = 511)
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sw t0,VI_V_VIDEO(a0) // Store Vertical Video To VI V Start Register ($A4400028)
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li t0,$E0204 // T0 = Vertical Burst (Start Of Color Burst Enable In Half-Lines = 14, End Of Color Burst Enable In Half-Lines = 516)
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sw t0,VI_V_BURST(a0) // Store Vertical Burst To VI V Burst Register ($A440002C)
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lli t0,($100*({width}/160)) // T0 = X-Scale (Horizontal Subpixel Offset In 2.10 Format = 0, 1/Horizontal Scale Up Factor In 2.10 Format)
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sw t0,VI_X_SCALE(a0) // Store X-Scale To VI X Scale Register ($A4400030)
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lli t0,($100*({height}/60)) // T0 = Y-Scale (Vertical Subpixel Offset In 2.10 Format = 0, 1/Vertical Scale Up Factor In 2.10 Format)
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sw t0,VI_Y_SCALE(a0) // Store Y-Scale To VI Y Scale Register ($A4400034)
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li t0,{status} // T0 = Status/Control
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sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
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}
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macro ScreenPAL(width,height, status, origin) {
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lui a0,VI_BASE // A0 = VI Base Register ($A4400000)
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la t0,{origin} // T0 = Origin (Frame Buffer Origin In Bytes)
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sw t0,VI_ORIGIN(a0) // Store Origin To VI Origin Register ($A4400004)
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lli t0,{width} // T0 = Width (Frame Buffer Line Width In Pixels)
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sw t0,VI_WIDTH(a0) // Store Width To VI Width Register ($A4400008)
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lli t0,$2 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $2)
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sw t0,VI_V_INTR(a0) // Store Vertical Interrupt To VI Interrupt Register ($A440000C)
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lli t0,0 // T0 = Current Vertical Line (Current Half-Line, Sampled Once Per Line = 0)
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sw t0,VI_V_CURRENT_LINE(a0) // Store Current Vertical Line To VI Current Register ($A4400010)
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li t0,$404233A // T0 = Video Timing (Start Of Color Burst In Pixels from H-Sync = 4, Vertical Sync Width In Half Lines = 04, Color Burst Width In Pixels = 35, Horizontal Sync Width In Pixels = 58)
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sw t0,VI_TIMING(a0) // Store Video Timing To VI Burst Register ($A4400014)
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lli t0,$271 // T0 = Vertical Sync (Number Of Half-Lines Per Field = 625)
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sw t0,VI_V_SYNC(a0) // Store Vertical Sync To VI V Sync Register ($A4400018)
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li t0,$150C69 // T0 = Horizontal Sync (5-bit Leap Pattern Used For PAL only = 21: %10101, Total Duration Of A Line In 1/4 Pixel = 3177)
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sw t0,VI_H_SYNC(a0) // Store Horizontal Sync To VI H Sync Register ($A440001C)
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li t0,$C6F0C6E // T0 = Horizontal Sync Leap (Identical To H Sync = 3183, Identical To H Sync = 3182)
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sw t0,VI_H_SYNC_LEAP(a0) // Store Horizontal Sync Leap To VI Leap Register ($A4400020)
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li t0,$800300 // T0 = Horizontal Video (Start Of Active Video In Screen Pixels = 128, End Of Active Video In Screen Pixels = 768)
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sw t0,VI_H_VIDEO(a0) // Store Horizontal Video To VI H Start Register ($A4400024)
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li t0,$5F0239 // T0 = Vertical Video (Start Of Active Video In Screen Half-Lines = 95, End Of Active Video In Screen Half-Lines = 569)
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sw t0,VI_V_VIDEO(a0) // Store Vertical Video To VI V Start Register ($A4400028)
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li t0,$9026B // T0 = Vertical Burst (Start Of Color Burst Enable In Half-Lines = 9, End Of Color Burst Enable In Half-Lines = 619)
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sw t0,VI_V_BURST(a0) // Store Vertical Burst To VI V Burst Register ($A440002C)
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lli t0,($100*({width}/160)) // T0 = X-Scale (Horizontal Subpixel Offset In 2.10 Format = 0, 1/Horizontal Scale Up Factor In 2.10 Format)
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sw t0,VI_X_SCALE(a0) // Store X-Scale To VI X Scale Register ($A4400030)
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lli t0,($100*({height}/60)) // T0 = Y-Scale (Vertical Subpixel Offset In 2.10 Format = 0, 1/Vertical Scale Up Factor In 2.10 Format)
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sw t0,VI_Y_SCALE(a0) // Store Y-Scale To VI Y Scale Register ($A4400034)
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li t0,{status} // T0 = Status/Control
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sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
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}
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macro WaitScanline(scanline) { // Wait For RDP To Reach Scanline
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lui a0,VI_BASE // A0 = VI Base Register ($A4400000)
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lli t0,{scanline} // T0 = Scan Line
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-
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lw t1,VI_V_CURRENT_LINE(a0) // T1 = Current Scan Line
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bne t1,t0,- // IF (Current Scan Line != Scan Line) Wait
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nop // ELSE Continue (Delay Slot)
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}
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