TOPCAT(4)             OpenBSD Programmer's Manual (HP300)            TOPCAT(4)

NAME
     topcat - Topcat, Catseye and Kathmandu frame buffers

SYNOPSIS
     topcat*    at intio?
     topcat*    at dio?
     wsdisplay* at topcat?

DESCRIPTION
     The HP98543, HP98544, HP98545A and HP98547A Topcat, as well as the
     HP98548A, HP98549A and HP98550A Catseye and the A1416A Kathmandu are ac-
     celerated frame buffers, with the following resolution and color depth:

           98543   512x400 4-bit color Topcat
           98544   1024x768 monochrome Topcat
           98545A  1024x768 4-bit color Topcat
           98547A  1024x768 6-bit color Topcat
           98548A  1280x1024 monochrome Catseye
           98549A  1024x768 6-bit color Catseye
           98550A  1280x1024 8-bit color Catseye
           A1416A  1280x1024 8-bit color Kathmandu

     The topcat driver provides a frame buffer abstraction to the wscons(4)
     console framework.

     The Topcat display cards are not user configurable.  If one is present on
     a system, it will always have a frame buffer address of 0x200000 and a
     control register address of 0x560000.

     The Catseye and Kathmandu cards can be configured using the on-board 8
     DIP switches selector to define the ``select code''.  A select code of 1
     will use the same settings as the Topcat cards.

SEE ALSO
     dio(4), intro(4), wscons(4), wsdisplay(4)

OpenBSD 4.7                     March 26, 2008                               1
