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 accelerated 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)