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11-8
Display Interface
Power 9100 User Interface Controller
Status and control
registers and
commands
The Power 9100 contains a number of registers which are used to control
device operations. They are used, for example, to enable and handle
interrupts, to control parameter and drawing engine operations and to
configure video and VRAM operations.
In addition status and control registers, this area of the Power 9100’s host
interface provides several write-only or read-only locations which are
accessed to generate commands (i.e., it is the address that is interpreted as
the command). In the case of write commands, any data required to execute
the command is written to the command location.
Table 11-2 lists the addresses of the internal register sets and command
locations.
These registers are described briefly on the following pages. However, for
a detailed description of the Power 9100’s registers and capabilities, please
refer to the Power 9100 data book, see Appendix A, “Further Information”.
Base Address
Register/Command Type
Access
38000000
System Control Registers
R/W
38000100
Video Control Registers
R/W
38000180
VRAM Control Registers
R/W
38000200
RAMDAC Control
R/W
38000400
Video Coprocessor Interface
R/W
38002000
Parameter Engine Status Register
R
38002004
Blit Command
R
38002008
Quad Command
R
3800200C
Pixel8 Command (Power9000 Format)
W
38002014
Next_pixels Command
W
38002080
Pixel1 Command
W
38002180
Parameter Engine Registers
R/W
38002200
Drawing Engine Pixel Processing Registers
R/W
38003000
Device Coordinate Registers
R/W
38003200
Load Coordinate Commands
R/W
38004xxxx
Pixel8 Command (Power 9100 Format)
W
38800000
Frame Buffer Memory
R/W
Table 11-2 Power 9100 Register Locations
S3GX_TRMBook Page 8 Friday, September 19, 1997 11:39 am
Содержание SPARCbook 3 series
Страница 1: ...Series Technical Reference Manual 980327 02 3 S3GX_TRMBook Page i Friday September 19 1997 11 39 am...
Страница 8: ...viii S3GX_TRMBook Page viii Friday September 19 1997 11 39 am...
Страница 28: ...1 16 Architecture Overview Microcontroller Subsystem S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 44: ...2 16 The SPARC CPU SBus Controller S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Страница 76: ...5 8 SCSI Controller DMA Support S3GX_TRMBook Page 8 Friday September 19 1997 11 39 am...
Страница 82: ...6 6 Ethernet Interface DMA Support for Network Operations S3GX_TRMBook Page 6 Friday September 19 1997 11 39 am...
Страница 96: ...7 14 PCMCIA Interface Microcontroller Registers S3GX_TRMBook Page 14 Friday September 19 1997 11 39 am...
Страница 146: ...9 28 MODEM Class 2 Fax Command Set S3GX_TRMBook Page 28 Friday September 19 1997 11 39 am...
Страница 180: ...11 30 Display Interface RAMDAC S3GX_TRMBook Page 30 Friday September 19 1997 11 39 am...
Страница 210: ...B 10 Connector Information Removable Hard Drive SCSI Connector S3GX_TRMBook Page 10 Friday September 19 1997 11 39 am...
Страница 216: ...Index vi S3GX_TRMBook Page vi Friday September 19 1997 11 39 am...