30

 

SYMPTOM

POSSIBLE REMEDY

 

 

 

 

My system locks up

• The driver might be set to hardware

 

when exiting my

flow control and the external cable may

 

communication

not be wired correctly. Switch to

 

program.

software flow control. If the problem

 

 

stops, then the cable is wired incorrectly,

 

 

not allowing the external device to

 

 

supply the necessary control signals.

 

 

• Make sure that hardware flow control is

 

 

set in your system.

 

 

• Make sure the attached serial device is

 

 

set to hardware flow control.

 

 

 

 

EPP/ECP hard drive/

• Ensure the device is connected properly.

 

CD-ROM drive

Most EPP devices have two DB-25

 

does not function.

connectors labelled “COMPUTER” and

 

 

“PRINTER”. The first device should be

 

 

connected to the DB-25 labelled

 

 

“COMPUTER”. The next device(s)

 

 

should be connected to the DB-25

 

 

connector labelled “PRINTER” on the

 

 

first device.

 

 

• If a printer is required, it should be

 

 

connected to the DB-25 connector

 

 

labelled “PRINTER” on the last device.

 

 

• Ensure that the driver for each device is

 

 

installed and configured correctly. Note:

 

 

the driver for each device is supplied by

 

 

the vendor of that device.

 

 

• Make sure that the ECP printer port has

 

 

an IRQ assigned for EPP mode, or both

 

 

an IRQ and DMA for ECP mode.

 

 

 

 

 

 

IO Turbo Series

Page 30
Image 30
Boca Research Turbo1x1, 2x2 manual My system locks up