SAGA_VIDEO_HVSYNC Register

Overview

Change the current SAGA Video ModeLine HVSYNC attribute.


Name

  • SAGA_VIDEO_HVSYNC

Address

  • 0xDFF310

Access

  • Write-Only

Size

  • 16-bits

Description

See ModeLine for more information.

Property Short Description
HVSYNC Flags Sync Polarity. HSync on High Byte, VSync on Low Byte.

Example

The following ASM snippet shows how to fully set a valid ModeLine.

MAIN:
  lea    MyModeLine,a0   ; Load MyModeLine in A0
  move.w (a0)+,$dff300   ; SAGA_VIDEO_HPIXEL
  move.w (a0)+,$dff302   ; SAGA_VIDEO_HSSTRT
  move.w (a0)+,$dff304   ; SAGA_VIDEO_HSSTOP
  move.w (a0)+,$dff306   ; SAGA_VIDEO_HTOTAL
  move.w (a0)+,$dff308   ; SAGA_VIDEO_VPIXEL
  move.w (a0)+,$dff30A   ; SAGA_VIDEO_VSSTRT
  move.w (a0)+,$dff30C   ; SAGA_VIDEO_VSSTOP
  move.w (a0)+,$dff30E   ; SAGA_VIDEO_VTOTAL
  move.w (a0)+,$dff310   ; SAGA_VIDEO_HVSYNC
  rts

MyModeLine:
  dc.w 800,832,912,1024,600,604,608,625,1 ; "800x600@60" 38.400000

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Last modified: le 2019/12/10 03:00