LXE 1280 Reference Guide
10
System Overview
LDS Plus Reference Guide
E-SW-LDSPLUSRG-G
Buffers
The LXE DOS computer contains different buffers that control how messages flow.
The following diagram illustrates, conceptually, the buffer organization in the LXE DOS
computer:
computer:
RX Data
Receive Buffer
Optional Auxiliary
I/O Buffer
Display Buffer
Status Buffer
Form Buffer
Stored Forms
Transmit
(Compose) Buffer
TX Data
Figure 1-3 DOS Terminal Buffer Organization
Components
The following table describes each LXE DOS computer buffer:
Buffer Description
Receive Buffer
Every message that the LXE computer receives on the
RF channel comes in through the receive buffer.
RF channel comes in through the receive buffer.
Display Buffer
Used to display information from the receive, compose,
and status buffers. What is seen on the physical display.
and status buffers. What is seen on the physical display.
Status Buffer
Contains error or status messages from the LXE
computer's software. Messages are displayed in a pop-
up dialog box.
computer's software. Messages are displayed in a pop-
up dialog box.
Form Buffer
Contains a copy of the form the LXE computer is
currently using.
currently using.
Transmit (Compose) Buffer
Every message that the LXE computer transmits on the
RF channel must go through the compose buffer.
RF channel must go through the compose buffer.
All input from the keyboard, barcode scanner or other
external device is entered into the Compose Buffer.
external device is entered into the Compose Buffer.
Stored Forms
Text files stored in the C:\LDS24\STFORMS
subdirectory. The LDS host and the user can call up
stored forms for display at the LXE computer.
subdirectory. The LDS host and the user can call up
stored forms for display at the LXE computer.