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- XDEF _OpenScreen24
- XDEF _CloseScreen24
- XDEF _DrawRGB
- XDEF _ReadRGB
- XDEF _SetControl
- XDEF _SetRGB
- XDEF _SetData
- XDEF _SetCoPRO
- XDEF _SetLoadAddress
- XDEF _Update_Palette_CoPRO
- XDEF _Chng_DataLine
- XDEF _Chng_NoWrt_DataLine
- XDEF _Select_Col_CoPRO
- XDEF _Set_Control_Bit
- XDEF _Set_Menu_Position
- XDEF _Set_DMA_Ratio
- XDEF _Load_Menu_Palette
- XDEF _Set_Menu_BitMap
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- _OpenScreen24:
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- ;move.l 4(sp),ScreenPointer ;Screen bitplane Structure
- bsr OpenScreen
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
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- _CloseScreen24:
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- bsr CloseScreen
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _DrawRGB:
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- bsr WritePixel
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _ReadRGB:
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- bsr ReadPixel
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _SetControl:
- move.l 4(sp),a0 ;stucture pointer
- move.l (a0),a0 ;Address of control register
- move.w 4(a0),d0 ;Data to write
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- bsr SetControl
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _SetRGB:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.b (a0),d0 ;Palette register to modify
- move.b 1(a0),d1 ;Red data
- move.b 2(a0),d2 ;Green data
- move.b 3(a0),d3 ;blue data
- bsr SetRGB
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _SetData:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.b (a0),ColAddress ;Palette load start address
- move.b 1(a0),PixelMask ;Mask for pixel data
- move.b 2(a0),ControlReg ;Video Control Register
- bsr SetData
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _SetCoPRO:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.w (a0),d0 ;CoPRO line to modfiy
- move.b 2(a0),d1 ;Data to write for that line
- bsr SetCoPro
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _SetLoadAddress:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.l (a0),Load_Address ;CoPRO line to modfiy
- bsr SetLoadAddress
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Update_Palette_CoPRO:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.b (a0),d0 ;0=Palette, 1=CoPRO
- bsr Update_Palette_CoPRO
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Chng_DataLine:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.l (a0),a0 ;New dataline address
- bsr Chng_DataLine
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Chng_NoWrt_DataLine:
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.l (a0),a0 ;New dataline address
- bsr Chng_NoWrt_DataLine
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Select_Col_CoPRO: ;Select update to palette or CoPROcessor
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.b (a0),d0 ;status for update
- bsr Select_Col_CoPro
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Set_Control_Bit: ;Set a bit in a specified control register
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.l (a0),a0 ;address of control line
- move.b 4(a0),d0 ;status of bit to write
- move.b 5(a0),d1 ;Bit to modify
- bsr SetControlBit
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Set_Menu_Position: ;Set the menu to appear at the vertical position
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.w (a0),d0 ;position of menu
- bsr Set_Menu_Position
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Set_DMA_Ratio: ;set the Ratio for screen update and DMA
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.b (a0),d0 ;the DMA Ratio
- bsr Set_DMA_Ratio
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Load_Menu_Palette: ;set the Ratio for screen update and DMA
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- move.l (a0),d0 ;the Palette address
- bsr Load_Menu_Palette
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
-
- _Set_Menu_BitMap: ;link in bitplanes into Menu Copper list
- move.l 4(sp),a0 ;stucture pointer
- movem.l d2-d7/a2-a6,-(sp) ;save registers
- bsr Set_Menu_Address
- movem.l (sp)+,d2-d7/a2-a6 ;restore registers
- rts ;return
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