B&B Electronics PC Watchdog Timer Card ATXWDT Bedienungsanleitung PDF herunterladen (Seite 15)

INSTALLATIONS

MB800 User’s Manual 11

Configuring the CPU Frequency

The MB800 motherboard does not provide DIP switches to configure the

processor speed (CPU frequency). The CPU frequency and processor side

bus of the processor can be automatically detected by the motherboard.

JP3, JP4, JP5: RS232/422/485 (COM2) Selection

COM1 is fixed for RS-232 use only.

COM2 is selectable for RS232, RS-422 and RS-485.

The following table describes the jumper settings for COM2 selection.

COM2

Function

RS-232 RS-422 RS-485

Jumper

Setting

(pin closed)

JP3:

1-2

JP4:

3-5 & 4-6

JP5:

3-5 & 4-6

JP3:

3-4

JP4:

1-3 & 2-4

JP5:

1-3 & 2-4

JP3:

5-6

JP4:

1-3 & 2-4

JP5:

1-3 & 2-4

JP6, JP7, JP8, JP9, JP10: CRT VGA Signal Select

Use JP6, JP7, JP8, JP9, and JP10 to select the CRT VGA signal, either

from the on board VGA or from an optional MicroPCI VGA.

JP6/7/8/9/10 Function

On Board VGA

MicroPCI VGA

JP12: DiskOnChip Address Select

JP12 Address

D0000-D7FFF

D8000-DFFFF (default)

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 69 70

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