104
5 HP BIOS
BIOS Addresses
DMA Channel Controllers
Only “I/O-to-memory” and “memory-to-I/O” transfers are allowed.
“I/O-to-I/O” and “memory-to-memory” transfers are disallowed by the
hardware configuration. The system controller supports seven DMA
channels, each with a page register used to extend the addressing range of
the channel to 16 MB. The following table summarizes how the DMA
channels are allocated.
0388 - 038B
03B0 - 03DF
VGA
03E8 - 03EF
03F0 - 03F5
03F6
IDE primary channel
03F7
Flexible disk drive controller
03F8 - 03FF
COM1
04D0 - 04D1
System board resources under Windows 95
0678 - 067B
0778 - 077B
LPT1 ECP
0CF8 - 0CFF
PCI configuration space
8000 -
8400 -
8800 -
Default Values for
I/O Address Ports
Function
DMA controller
Channel
Function
DMA 0
Free
DMA 1
Free
DMA 2
Flexible disk drive controller
DMA 3
LPT ECP
DMA 4
DMA controller
DMA 5
Free
DMA 6
Free
DMA 7
Free
Содержание Kayak XU800 Series
Страница 1: ...HP Kayak XU800 PC Workstation Technical Reference Manual ...
Страница 26: ...26 1 System Overview Documentation ...
Страница 86: ...86 3 Interface Cards Network Cards ...
Страница 106: ...106 5 HP BIOS BIOS Addresses ...
Страница 130: ...130 6 Tests and Error Messages Error Message Summary ...
Страница 140: ...140 7 Connectors and Sockets Rear Panel Socket Pin Layouts ...