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2 System Board - (SiS Chipset) (Part Number: D4051-63001)
Devices on the ISA Bus
Devices on the ISA Bus
Super I/O Chip (NS 87308 or NS 87307)
The basic input/output control functions are provided by the Super I/O chip,
the NS 87308 or NS 87307. The Super I/O chip is contained within a 160-pin
PQFP package. The chip provides the control for the following devices:
The Super I/O chip incorporates one Plug and Play compatible chip, is 100%
compatible with the ISA architecture, and provides:
• An integrated floppy drive controller.
• A keyboard controller.
• A mouse controller.
• A real-time clock (RTC).
• Two UART’s (serial ports ).
• An IEEE1284 parallel port.
• Three general purpose chip select signals
• General purpose I/O register set.
• An X-bus data buffer that connects the 8-bit X data bus to the ISA data
bus.
• Non-Volatile Memory (NVM) support via the Chip Select 0 (CS0) signal
that is powered by the V
CCH
.
Logical
Device
Functions
0 Keyboard controller
1 Mouse controller
2 RTC and Advanced Power supply Controller (APC)
3 Floppy disk controller
4 Parallel port controller
5 UART2 & IR controller
6 UART1 controller
7 GPIO
8 Power management
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