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EPC-3221 CompactPCI
®
System Controller Board and C1XTN02 Transition I/O Module
38
Service Manual
Console Redirection
Overview
Console, or serial, redirection allows an SCB or motherboard to be installed at a remote
location and operated via a serial terminal. Redirection does not require a video controller or
keyboard connected to the SCB in order to operate.
Interrupts
Console redirection utilizes two interrupts:
•
Video: Redirection uses the video interrupt (10h) to detect any video operations not made
by direct screen memory or an I/O controller.
Note:
Because the redirection service sends ASCII data to the serial terminal, only text
can be supported, not graphics.
•
Keyboard: Redirection uses the keyboard interrupt (16h) to receive characters sent from
the serial terminal and convert them to the appropriate PC scan codes.
Note:
Operating systems or applications that do not use the interrupt 16h services will
require a redirection driver to receive data from the serial terminal.
Cable
For proper operation of most serial terminals, it is strongly recommended that signals from
each end of the serial cable be configured as listed below:
Note:
The Ring Indicator (RI) signal can be ignored.
Configuration
To enable console redirection:
1. Run the Setup Utility. See
page 21
.
2. Provide a serial port for console redirection.
Note:
A serial port on the SCB or XIO can be used for console redirection. See
page 24
.
3. Select the address and interrupt for the serial port.
4. Set the console redirect port to the same address and interrupt that was selected in step 3.
See
page 26
.
5. Set the baud rate for the console redirect port.
Note:
This must match the baud rate of the serial terminal.
6. Connect the serial cable between the redirection port and the serial terminal.
Note:
Redirection uses XON and XOFF for flow control. For a simple connection, a
three-wire serial cable can be used. Only Ground, Transmit, and Receive signals are
required.
Console redirection will function once the CPU is reset.
Data Set Ready (DSR)
Request to Send (RTS)
Clear to Send (CTS)
Data Terminal Ready (DTR)
Data Carrier Detect (DCD)
Connector A
Connector B
The Setup Utility can be accessed through console redirection. However, it is slow because the
setup screens are graphical, and each change requires the entire screen to be redrawn. The
Adaptec SCSI Setup Utility is not accessible via console redirection.
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