Topic       : The ATARI Compendium
Author      : Scott Sanders / JAY Software
Version     : 1.25 (20/6/2003)
Subject     : Documentation
Nodes       : 1117
Index Size  : 32614
HCP-Version : 6
Compiled on : Atari
@charset    : UTF-8
@lang       : en
@default    : 
@help       : %About
@options    : +g -i -t4 +y +z
@width      : 100
View Ref-FileVsetSync()                                                            XBIOS

Syntax

VOID VsetSync( external )
WORD external;

Function      VsetSync() sets the external video sync mode.

Opcode        90 (0x5A)

Availability  Available if the '_VDO' cookie has a value of 0x00030000 or
              greater.

Parameters    external is a WORD bit array defined as follows:

              Name           Bit    Meaning

              VCLK_EXTERNAL   0     Use external clock.

              VCLK_EXTVSYNC   1     Use external vertical sync.

              VCLK_EXTHSYNC   2     Use external horizontal sync.

              -              3-15   Reserved (set to 0)

Binding       move.w   external,-(sp)
              move.w   #$5A,-(sp)
              trap     #14
              addq.l   #4,sp

Caveats       This call only works in Falcon video modes, not in
              compatibility or any four color modes.