4-12 System Boards
MPEG is a compression/decompression standard developed by a professional video group called
the Motion Picture Experts Group. MPEG produces full-screen, 30-frames-per-second (fps),
broadcast-quality digital video.
Integrated Audio
To support multimedia applications, an AC97 Codec audio chip is integrated on the system
board. The chip provides 16-bit stereo, Sound Blaster Pro
-compatible audio.
The sound system provides all the digital and analog mixing functions required for playing and
recording audio on personal computers. Features include stereo analog-to-digital and digital-to-
analog converters, analog mixing, anti-aliasing and reconstruction filters, line and microphone
level inputs, digital audio compression, and full digital control of all mixer and volume control
functions.
System Board Resources
The system memory map, I/O addresses, and DMA settings are given in the following sections.
System interrupt settings, parallel interrupt settings, and serial interrupt settings are included in
Section 2, “System Configuration.”
Memory Map
The system memory map is shown in the following table.
System Memory Map
Memory Space
Size
Function
100000-18000000
383 MB
Extended memory
FC000-FFFFF
16 KB
Boot block
FA000-FBFFF
8 KB
ESCD (Plug and Play Configuration and DMI)
F9000-F9FFF
4 KB
Reserved for BIOS
F8000-F8FFF
4 KB
OEM logo or Scan User Flash
E8000-E7FFF
64 KB
POST BIOS
E0000-E7FFF
32 KB
POST BIOS (currently available as UMB)
C8000-D7FFF
96 KB
Available HI DOS memory (open to ISA and PCI bus)
A0000-C7FFF
160 KB
Video memory and BIOS
9FC00-9FFFF
1 KB
Extended BIOS data (movable by memory manager software)
80000-9FBFF
127 KB
Extended conventional memory
00000-7FFFF
512 KB
Conventional memory
I/O Addresses
The processor communicates with I/O devices by I/O mapping. The hexadecimal (hex)
addresses of I/O devices are listed in the following table.
Note
In Plug and Play systems, these addresses are typical but may vary by configuration.
Содержание POWERMATE ES Series
Страница 12: ...1 System Overview Configurations Features Components...
Страница 29: ...2 6 System Configuration System Board Jumper Settings...
Страница 71: ...4 System Boards System Board Riser Board...
Страница 86: ...5 Illustrated Parts Breakdown Order Spare Parts Field Replaceable Unit List Illustrated Parts Breakdown...
Страница 90: ...6 Preventive Maintenance System Cleaning Keyboard Cleaning Mouse Cleaning...
Страница 93: ...7 Troubleshooting Checklist Diagnostics...
Страница 102: ...8 NECC Information Services Service Telephone Numbers Technical Support...
Страница 132: ...NEC Computer Systems Division 15 Business Park Way Sacramento CA 95828 www nec computers com 456 00131 000SRV 7 2000...