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SS-558

SYNERGY SOLUTIONS

SS-558

Card Type

Serial card

Chipset Controller

16C554 UART (2)

I/O Options

Serial port (8 serial port connectors on external cable)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

78-pin serial port interface connector

CN1

BANK A SERIAL PORT INTERRUPT SELECTION (PORTS 1 - 4)

IRQ

S2/1

S2/2

S2/3

S2/4

S2/5

S2/6

5

Off

Off

Off

On

Off

Off

 

2

On

Off

Off

Off

Off

Off

 

3

Off

On

Off

Off

Off

Off

 

4

Off

Off

On

Off

Off

Off

 

6

Off

Off

Off

Off

On

Off

 

7

Off

Off

Off

Off

Off

On

BANK B SERIAL PORT INTERRUPT SELECTION (PORTS 5 - 8)

IRQ

S4/1

S4/2

S4/3

S4/4

S4/5

S4/6

5

Off

Off

Off

On

Off

Off

 

2

On

Off

Off

Off

Off

Off

 

3

Off

On

Off

Off

Off

Off

 

4

Off

Off

On

Off

Off

Off

 

6

Off

Off

Off

Off

On

Off

 

7

Off

Off

Off

Off

Off

On

SERIAL PORT CONFIGURATION

IRQB

S4/7

Single interrupt selected on S2 Bank A for all eight ports

On

All ports not using same interrupt

Off

Note: This switch work in conjunction with the setting of interrupts for Bank A (S2) & Bank B (S4).

BASE I/O ADDRESS SELECTION (BANK A SERIAL PORT 1 - 4)

Address

S1/1

S1/2

S1/3

S1/4

S1/5

S1/6

S1/7

100h

On

On

On

Off

On

On

On

 

120h

Off

On

On

Off

On

On

On

 

140h

On

Off

On

Off

On

On

On

 

160h

Off

Off

On

Off

On

On

On

 

180h

On

On

Off

Off

On

On

On

 

0F60h

Off

Off

On

Off

Off

Off

Off

 

0F80h

On

On

Off

Off

Off

Off

Off

 

0FA0h

Off

On

Off

Off

Off

Off

Off

 

0FC0h

On

Off

Off

Off

Off

Off

Off

 

0FE0h

Off

Off

Off

Off

Off

Off

Off

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. S1/7 is the Most Significant Bit and switch S1/1 is the Least Significant Bit. The switches have the following decimal values: S1/7=2048, S1/6=1024, S1/5=512, S1/4=256, S1/3=128, S1/2=64, S1/1=32. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

BASE I/O ADDRESS SELECTION (BANK B SERIAL PORT 5 - 8)

Address

S3/1

S3/2

S3/3

S3/4

S3/5

S3/6

S3/7

120h

Off

On

On

Off

On

On

On

 

100h

On

On

On

Off

On

On

On

 

140h

On

Off

On

Off

On

On

On

 

160h

Off

Off

On

Off

On

On

On

 

180h

On

On

Off

Off

On

On

On

 

0F60h

Off

Off

On

Off

Off

Off

Off

 

0F80h

On

On

Off

Off

Off

Off

Off

 

0FA0h

Off

On

Off

Off

Off

Off

Off

 

0FC0h

On

Off

Off

Off

Off

Off

Off

 

0FE0h

Off

Off

Off

Off

Off

Off

Off

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. S3/7 is the Most Significant Bit and switch S3/1 is the Least Significant Bit. The switches have the following decimal values: S3/7=2048, S3/6=1024, S3/5=512, S3/4=256, S3/3=128, S3/2=64, S3/1=32. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

FACTORY CONFIGURED - DO NOT ALTER

Switch

Position

S2/7

Off