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.