http://h18000.www1.hp.com/athome/support/msgs/4951/specdeta.html
United States December 9, 2002
Maintenance and Service Guide
Compaq Presario 4900, 5000, & 5100 Series Computers
Home
Product Description
Troubleshooting
Illustrated Parts Catalog
Removal & Replacement
Jumper & Switch Information
Specifications
System
Power supply
Diskette
drive
Hard drives
DVD drive
CD drives
Mouse
Fax/modem
Zip drive
l
SPECIFICATIONS
System Specifications (continued)
General system specifications
Video memory
System interrupts
System I-O
System memory
System DMA
System Memory
Size
Memory Address
System Function
640 K
00000000 - 0009FFFF
Base Memory
128 K
000A0000 - 000BFFFF
Video RAM
32 K
000C0000 - 000C7FFF
Video ROM
32 K
000C8000 - 000CFFFF
Legacy USB Device Header (when legacy
support enabled)
64 K
000D000 - 000DFFFF
Unused
48 K
000E0000 - 000EBFFF
Unused (Not available for option cards. May
use for UMBs.)
16 K
000EC000 - 000EFFFF
16-bit cacheable, shadowable, read-only
memory. Not available for option cards.
64 K
000F0000 - 000FFFFF
System BIOS ROM shadow image
15 M
00100000 - 00FFFFFF
Standard Extended Memory
64 M
01000000 - 04FFFFFF
Rest of Extended Memory
60 M
05000000 - 07FFFFFF
Unused
512 K
08000000 - 0807FFFF
Standard Direct Video Memory
512 K
08080000 - 080FFFFF
Optional Direct Video Memory
1919 M
08100000 - 7FFFFFFF
Unused
16 M
80000000 - 80FFFFFF
Memory mapped I/O devices
~2000 M
81000000 - FDFDFFFF
Unused/System ROM aliases
128 K
FDFE0000 - FDFFFFFF
System ROM (alias)
~32 M
FE000000 - FFFDFFFF
Unused
128 K
FFFE0000 - FFFFFFFF
System BIOS ROM
System DMA
Hardware
System Function (Default)
Alternate Mappings
DMA 0
ECP Parallel
1, 2, none
DMA 1
Entertainment Audio
0, 3, none
DMA 2
Diskette Drive
none
DMA 3
Entertainment Audio
0, 1, none
DMA 4
Internally used for cascading
DMA 5
Available
DMA 6
Available
DMA 7
Available
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http://h18000.www1.hp.com/athome/support/msgs/4951/specdeta.html [12/9/2002 5:20:39 PM]
