NAME
sti
- HP Standard Text Interface
SYNOPSIS
sti* at mainbus0 irq ?
sti* at phantomas0 irq ?
wsdisplay* at sti? console ?
DESCRIPTION
The
sti
was created by HP to provide uniform frame-buffer access operations
for their 9000/300 and 9000/700 series of workstations.
The following models are supported
(though not all features or frame buffer depths may be available):
Model | Bits | Mem | 3D | Machines/Cards
|
GRX | 8g | 2 | | SGC
|
CRX | 8 | 2 | | SGC
|
Tomcat | 8 | 2 | | SGC
|
Stinger | 8 | 2 | | HP9000/7[12]5/74[257]i
|
Artist | 8 | 2 | | HP9000/712/7[12]5/74[38]i
|
CRX-24 | 24 | 16 | | SGC
|
HCRX-8 | 8 | 2 | | GSC
|
HCRX-24 | 24 | 16 | | GSC
|
Visualize EG | 16 | 2 | | HP B/C-class, GSC/PCI
|
Implementation consists of a set of functions burnt in to the PROM
on the card and providing the following set of functions (see below
for PROM revision history on functions supported by particular PROM
revision):
-
Initialize graphics.
-
State management.
-
Print a character onto the screen using currently selected font.
-
Copy a region of the frame-buffer to another location.
-
Self testing.
-
Exception handling.
-
Frame-buffer configuration enquiry.
-
Setting colour-map entry.
-
DMA parameters.
-
Flow control.
-
User timing.
-
Processing management.
-
Miscellaneous utility functions.
There are two modes for accessing the PROM:
``byte''
and
``word''
mode.
In
``byte''
mode each 4-byte word contains only the low-ordered big-endian
byte of data; i.e., to compose one word of data 4 words should be read
and low-ordered bytes of those should be shifted correspondingly.
In
``word''
mode each word contains all 4 bytes of valid data.
PROM revision history:
- 8.02
-
Original release.
- 8.03
-
-
OSF-extended self test (a.k.a fast).
-
Restore display.
- 8.04
-
-
Implement
curr_mon
function.
-
Graphical boot screen.
-
Implement
``block move''.
-
Implement
``set colour-map entry''.
sti
Implement word mode.
-
Support for multiple monitors.
-
Support
user_data
sti
space usage.
-
Support for extra memory.
-
Support for
WindowsNT (tm).
-
Monitor frequency reference.
-
Early console.
-
Support added for: PCXL,
GSC
bus, ROM-less operation.
- 8.05
-
-
Interrupt support.
-
Report card's power usage.
-
Birds of Prey.
-
User interrupts.
- 8.06
-
-
Multiple fonts.
-
Monitor table descriptor strings.
-
PCXL2 and PCXU monitor descriptors.
- 8.08
-
-
HP-UX 10 support for Visualize FX
-
dma_ctrl
function added.
-
flow_ctrl
function added.
-
user_timing
function added.
- 8.09
-
-
Addition changes for
VisualizeFX
due to rearchitecture for performance.
-
process_mgr
function added.
- 8.0a
-
PCXL2 and PCXU dual
PCI
EPROM map mode, implemented on
VisualizeEG.
- 8.0b
-
Support for HP-UX non-implicit locking DMA, implemented on
VisualizeFXE.
- 8.0c
-
sti_util
function added (flashing under HP-UX and other sideband traffic).
- 8.0d
-
Colour frame buffer support.
SEE ALSO
intro(4),
phantomas(4),
wsdisplay(4)
HISTORY
The
sti
driver was written by
Michael Shalayeff <mickey@openbsd.org>
for HPPA
port for
OpenBSD2.7.
BUGS
Currently, neither scroll back nor screen blanking functions
are implemented.