NAME
gb —
HP98700 “Gatorbox”
graphics device interface
SYNOPSIS
gbox* at intio?
gbox* at dio? scode ?
wsdisplay* at gbox?
DESCRIPTION
This driver is for the HP98700 and 98710 graphics devices, also known as the
Gatorbox. The term “Gator” will often be used, and it is not to be
confused with “Gator” used in reference to an HP 9837 or 200/237
machine. Also, the term Gatorbox is used for the 98700 alone, with the 98701
frame buffer memory or with the 98710 accelerator installed. This driver
merely checks for the existence of the device and does minimal setup, as it is
expected the applications will initialize the device to their requirements.
The 98700 can be used as the only graphics device on a system, in which case it
will be used as the system console. It can also be installed as a secondary
display device. For the first case, the HP 98287A M.A.D. interface card should
be set to internal control space. This will put the frame buffer at the DIO
address 0x200000 and the control registers at 0x560000. At this address it
will be the “preferred” console device (see
hp300/cons(4)). For use
as a secondary device, the 98287A should be set to frame buffer address
0x300000, and to an external select code.
It should be noted that this configuration will conflict with the 98547 display
card which has a 2 megabyte frame buffer starting at address 0x200000. The
98700 should only be installed as a secondary device in a machine with a 1 bit
98544 display card or 4 bit 98545 card. The
98700H
Installation Guide contains further configuration information.
SEE ALSO
wscons(4),
wsdisplay(4)