PB680 MMX System Overview

Battery Socketed 3 volt Lithium coin cell battery at location BT5G1.
BIOS Flash EEPROM - AMI BIOS
Plug and Play 1.0a spec., support for Windows 95.
Bus Architecture PCI 2.1/ISA based system bus
66MHz maximum bus speed
Cache 16K level 1 cache
256KB Pipelined Burst Cache which is soldered on board and not upgradeable.
Some models will have no level 2 cache.
Chipset PC87306B Super I/O Controller.
CPU MMX Pentium 166 MHz MMX Pentium 200 MHz

The following CPUs are also supported as Pentium only (non-MMX):

Pentium 75 MHz Pentium 133 MHz
Pentium 90 MHz Pentium 150 MHz
Pentium 100 MHz Pentium 166 MHz
Pentium 120 MHz Pentium 200 MHz

Uses Type 7 CPU Zero Insertion Force (ZIF) CPU Socket. Supports Pentium Overdrive.
Interfaces Serial DB-9 Serial port for COM2
Parallel DB-25 Parallel port
Keyboard PS/2 keyboard port
Mouse PS/2 mouse port
S-Video I2C and S-video IN
USB Side-by side USB connector
RCA RCA Jack for NTSC/Pal video IN
VGA DB-15 VGA port
Soft On/Off 4-pin locking header
I/O Box 4-pin locking header
FDD Connector 34-pin on-board header connector
HDD Connector 40-pin PCI IDE (fast PIO-4)
HDD Connector 40-pin PCI IDE (fast PIO-4)
VESA Feature Connector 34-pin header connector
Infrared Serial Connector 5-pin header connector
Sleep Mode Support 2-pin header
IRQ Availability 5, 10,11, 15

The available IRQs may vary depending on the system configurations. When determining available IRQs always check for printers, sound cards, CD-ROM drives and any other devices in the system.

See Also: IRQ AVAILABILITY
Network Certification To be determined.
RAM 8MB installed standard/128M maximum
Uses 4/8/16/32 MB 72-pin SIMMs, ó0 or 70ns, EDO or Fast Page RAM
Supports only non-parity DRAM
Speaker On-board piezo speaker.
UART Two 16C550A Compatible chips
Video Built-in, S3 Trio64V+ or S3 Virge 3D
PCI graphics controller:

1024 x 768, 256 colors with 1MB
1280 x 1024, 256 colors with 2MB
VESA Display Channel supported
DPMS compliant

NOTE:
The PB680 uses S3 Inc. Trio64V+ or S3 Virge 3D PCI Video Chipset.
The S3 Trio64V+ and S3 Virge are compatible with IBM VGA standards.
Video RAM S3 Trio64V+ motherboards have 1MB expandable to 2MB
S3 Virge 3D motherboards have 2MB Non Upgradable

IRQ Availability


Note: The Bolded lines are usually free IRQs except when it is used by the indicated or added devices.

IRQ Description Used Handled By
0
 Timer Click Yes Default Handles
1
 Keyboard Yes Default Handles
2
 Second 8259A Yes BIOS
3
 COM2 or COM4 COM2 BIOS
4
 COM1 or COM3 COM1 BIOS
5
 LPT2 or Sound Card (If present) Yes BIOS
6
 Floppy Disk Yes Default Handlers
7
 LPT1 Yes System Area
8
 Real-Time Clock Yes Default Handlers
9
 Redirected IRQ2 Yes BIOS
10
 Sound Card (If present) Yes BIOS
11
 (Reserved) Free *1 BIOS
12
 PS/2 Mouse Yes Default Handles
13
 Math Co-processor (If present) Yes BIOS
14
 Fixed Disk Yes Default Handlers
15
 Secondary Fixed Disk (If present) Free *2 Default Handlers

*1 If a PBTV4 card is installed then IRQ 11 is used.

*2 If an IDE CD-ROM is used then IRQ 15 is used.