System Board Chips - NEC POWERMATE P - SERVICE MANUAL 1996 Service And Reference Manual

1-4 Technical Information
n
I/O panel contains external connectors for connecting the following external
devices:
VGA-compatible monitor (standard, super, high-resolution VGA)
personal system/2 (PS/2
Windows 95, 104-key keyboard
bidirectional Enhanced Parallel Port (EPP) and enhanced capabilities port
(ECP) are supported for a parallel printer
serial devices through two buffered 16C550 UART serial ports, each
supporting up to 19.2 KB per second
multimedia speakers, microphone, and headphone connectors (multimedia
configurations only)
Table 1-1 lists the major chips on the system board. See Appendix A, Connector Pin
Assignments, for a list of the system board connectors. See Appendix B, System Board
Jumpers, for a description of board jumpers.
Chip
P54C (CPGA)
Intel Triton 82430FX PCI/ISA Chip Set
82437FX
82438FX
824371FB
SMC FDC37C665IR
28F001
Dallas DS12887 compatible battery
OPTi 82C930 Sound Chip (multimedia
systems only)
Yamaha OPL3-L Synthesizer Chip
(multimedia systems only)
NOTE: The PCI GUI graphics controller is on the video board (see "Graphics Subsystem".
®
)-style mouse
Table 1-1 System Board Chips
Description
150-MHz Intel Pentium processor
166-MHz Intel Pentium processor
System controller
Data path unit
PCI ISA/IDE accelerator bridge chip
Integrated Plug and Play Ultra I/O controller
128k x 8 Flash ROM
Real-time clock/battery
Onboard PC sound system
Frequency modulated synthesizer