Introduction
This description applies for the system board with ISA Bus.
Notational conventions
The meanings of the symbols and fonts used in this manual are as follows:
!
This indicates instructions which it is essential to observe. Failure to do so
may endanger your health, the operational integrity and electrical safety of
your PC, or the security of your data.
This symbol is followed by supplementary information, remarks and tips.
i
Texts which follow this symbol describe activities that must be performed in the
order shown.
This symbol means that you must enter a blank space at this point.
↵
This symbol means that you must press the Enter key.
Texts in this typeface
are screen outputs from the PC
.
Texts in this bold typeface
are the entries you make via the keyboard.
Texts in italics
indicate commands or menu items
.
"Quotation marks" indicate highlighted text and names of chapters.
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1
Introduction
Features
– 32-bit microprocessor i486 SX, i486 SX2, i486 DX, i486 DX2 with 8 Kbytes
internal cache memory (first level cache); SL enhanced versions
– Upgrade possibility with upgrade processors ODP486 SX, ODP486 DX/33 or
ODPR486 DX
– Math coprocessor: integrated in processor i486 DX and i486 DX2
– Memory configuration on system board: 4 Mbytes to 32 Mbytes RAM onboard
– 114 Bytes Setup memory in CMOS RAM
– 128 Kbytes ROM
– BIOS can be copied into RAM
– Hard disk controller for two IDE hard disk drives
– Monitor controller; graphics processor GD5428 with Windows accelerator and
512 Kbytes DRAM video memory on the system board (upgradable to 1 Mbyte)
– Floppy disk drive controller (up to 1.44 Mbyte format)
– Real-time clock/calendar with integrated battery backup
– ISA bus interface for platter
– Connector for IDE hard disk drive
– Connector for floppy disk drive
– Connector for external loudspeaker
– Connector for external monitor controller (VESA VGA pass-through)
– Parallel
interface
– Two serial interfaces
– Mouse interface (PS/2)
– Keyboard port (PS/2)
– Monitor
interface
2
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