Specifications

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2-4. SYSTEM CLOCK SELECT AND CPU SETTING
System clock and CPU frequency ratio are automatically detected by BIOS. Please keep sw2 ,
sw3-1 , sw3-2 ,and sw3-3 off.
2-5. RS232/485 SELECTION
The jumper settings are as follows:
(1)COM 1 & COM2 (RS232)
1
2
3
J1
Terminator
1 2 3
J2
7 8 9
1 3 5
J3
2 4 6
(2)COM 2(RS485)
1
2
3
J1
485+
485-
Terminator
1 2 3
J2
7 8 9
1 3 5
J3
2 4 6
(3)RS485 Terminator Select
1
2
3
J1
485+
485-
OFF
J1
ON
Factory Preset
2-6. DOC MEMORY
(1) DOC Memory Mapping Selection (JP6, JP7)
A 32-pin DOC socket supports a DOC (Disk-on-Chip) up to 72Mb. This PnP Flash ROM DOC
can be installed as one of the user’s hard disk drive. And if set as Drive C, it can be used to boot
up the computer with MS-DOS installed. It offers much faster access than a floppy or hard disk
and greatly increases reliability under harsh environment.
The DOC Memory Mapping is as follows:
DOC Memory Map
JUMPER SETTING
(pin closed)
JP6 JP7
JUMPER
ILLUSTRATION
Manufactory default --- CC000h-CDFFFh