.\"	$OpenBSD: vigra.4,v 1.13 2003/06/18 17:40:31 miod Exp $
.\" Copyright (c) 2002 Miodrag Vallat.  All rights reserved.
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.Dd May 27, 2003
.Dt VIGRA 4 sparc
.Os
.Sh NAME
.Nm vigra
.Nd 8-bit SBus color frame buffer with VGA-compatible modes
.Sh SYNOPSIS
.Cd "vigra* at sbus? slot ? offset ?"
.Cd "wsdisplay* at vigra?"
.Sh DESCRIPTION
The
.Tn "Vigra VS10, VS11 and VS12"
are 8 bit color frame buffers with user-selectable video modes, and a
VGA-compatible connector.
.Pp
The
.Nm
driver interfaces the frame buffer with the
.Xr wscons 4
console framework.
It does not provide direct device driver entry points
but makes its functions available via the internal
.Xr wsdisplay 4
interface.
.Pp
The video resolution and signal synchronization modes are
selected with four dip switches on the back of the card.
.Ss VS10 and VS12 Switch Settings:
The VS10 and VS12 support the following basic modes:
.Bl -column "Switches" "Resolution" "Refresh"
.It Li Switches Ta Resolution Ta Refresh Ta Description
.It Li "1 2 3 4" Ta "" Ta "Rate"
.It " "
.It Li "D D D D" Ta 640x480 Ta 60Hz Ta "Standard VGA, negative separate sync"
.It Li "U D D D" Ta 800x600 Ta 56Hz Ta "Super VGA, negative separate sync"
.It Li "D U D D" Ta 800x600 Ta 56Hz Ta "Super VGA, positive separate sync"
.It Li "U U D D" Ta 1024x768 Ta 60Hz Ta "Super VGA, negative separate sync"
.It Li "D D U D" Ta 1024x768 Ta 60Hz Ta "Super VGA, composite sync"
.It Li "U D U D" Ta 1024x768 Ta 60Hz Ta "Super VGA, sync-on-green"
.It Li "D U U D" Ta 1024x768 Ta 66Hz Ta "Sun 386i, composite sync"
.It Li "U U U D" Ta 1152x900 Ta 76Hz Ta "Sun SPARCstation, composite sync"
.It Li "D D D U" Ta 1152x900 Ta 61.5Hz Ta "NEC 4D, composite sync"
.It Li "U D D U" Ta 1152x900 Ta 66Hz Ta "Sun SPARCstation, composite sync"
.It Li "D U D U" Ta 800x600 Ta 60Hz Ta "VESA, negative separate sync"
.It Li "U U D U" Ta 800x600 Ta 72Hz Ta "VESA, negative separate sync"
.El
.Ss VS12-only Switch Settings:
The VS12 supports all of the previously listed modes, as well as a few high
resolution settings.
.Bl -column "Switches" "Resolution" "Refresh"
.It Li Switches Ta Resolution Ta Refresh Ta Description
.It Li "1 2 3 4" Ta "" Ta "Rate"
.It " "
.It Li "D D U U" Ta 1280x1024 Ta 60Hz Ta "NEC xD, negative separate sync"
.It Li "U D U U" Ta 1280x1024 Ta 60Hz Ta "NEC xD, composite sync"
.It Li "D U U U" Ta 1280x1024 Ta 60Hz Ta "NEC xD, sync-on-green"
.It Li "U U U U" Ta 1280x1024 Ta 67Hz Ta "Sun SPARCstation, composite sync"
.El
.Ss VS11 Switch Settings:
The VS11 supports a similar set of modes as the VS12, but with higher refresh
rates.
.Bl -column "Switches" "Resolution" "Refresh"
.It Li Switches Ta Resolution Ta Refresh Ta Description
.It Li "1 2 3 4" Ta "" Ta "Rate"
.It " "
.It Li "D D D D" Ta 640x480 Ta 60Hz Ta "Standard VGA, negative separate sync"
.It Li "U D D D" Ta 800x600 Ta 72Hz Ta "VESA, negative separate sync"
.It Li "D U D D" Ta 1024x768 Ta 60Hz Ta "VESA, negative separate sync"
.It Li "U U D D" Ta 1024x768 Ta 60Hz Ta "VESA, composite sync"
.It Li "D D U D" Ta 1024x768 Ta 60Hz Ta "VESA, sync-on-green"
.It Li "U D U D" Ta 1024x768 Ta 66Hz Ta "Sun 386i, composite sync"
.It Li "D U U D" Ta 1152x900 Ta 66Hz Ta "Sun SPARCstation, composite sync"
.It Li "U U U D" Ta 1152x900 Ta 76Hz Ta "Sun SPARCstation, composite sync"
.It Li "D D D U" Ta 1280x1024 Ta 67Hz Ta "Sun SPARCstation, composite sync"
.It Li "U D D U" Ta 1280x1024 Ta 60Hz Ta "NEC xFG, negative separate sync"
.It Li "D U D U" Ta 1280x1024 Ta 60Hz Ta "NEC xFG, composite sync"
.It Li "U U D U" Ta 1280x1024 Ta 60Hz Ta "NEC xFG, sync-on-green"
.It Li "D D U U" Ta 1280x1024 Ta 74Hz Ta "NEC xFG, composite sync"
.It Li "U D U U" Ta 1280x1024 Ta 74Hz Ta "NEC xFG, sync-on-green"
.It Li "D U U U" Ta 1280x1024 Ta 72Hz Ta "HP A1097, composite sync"
.It Li "U U U U" Ta 1280x1024 Ta 72Hz Ta "Special, composite sync"
.El
.Sh SEE ALSO
.Xr agten 4 ,
.Xr bwtwo 4 ,
.Xr cgeight 4 ,
.Xr cgfour 4 ,
.Xr cgfourteen 4 ,
.Xr cgsix 4 ,
.Xr cgthree 4 ,
.Xr cgtwelve 4 ,
.Xr cgtwo 4 ,
.Xr intro 4 ,
.Xr mgx 4 ,
.Xr pninek 4 ,
.Xr pnozz 4 ,
.Xr sbus 4 ,
.Xr tcx 4 ,
.Xr tvtwo 4 ,
.Xr wscons 4 ,
.Xr wsdisplay 4 ,
.Xr zx 4