LINKUP 5294 WITH DL5294 FIRMWARE
158
5250 Function
Key Sequence
Hex Value Generated
Extended Function:
Local Copy Print Req.
ESC P
1BH 50H
Local Copy Form Feed
ESC F
1BH 46H
Cancel Print
ESC C
1BH 43H
Refresh Screen
CTRL/W
17H
Toggle Status Line/
Toggle Indicators
ESC T
1BH 54H
Toggle Echoplex Enab1ed
CTRL/V
16H
Initialize Tenninal
ESC <
1BH 3CH
Request Disconnect
ESC >
1BH 3EH
ANSI Standard: 3.64 Terminal Setup
NOTE
The ANSI module may be used with terminals and PCs emulating VT100 terminals
without numeric keypad support; for those which do support a numeric keypad, the
VT100 module may be used.
Information on the setup of any terminal complying with the ANSI Standard 3.64 will depend on the
particular terminal being used. Please refer to the manufacturer’s user’s manual or contact your
supplier.
F.7 COMPU Terminal Module
COMPU is designed to support communication programs written especially for mini, micro, or
instrumentation computers (those other than the IBM PC and compatibles, which the IBMPC and
T5250 modules support) to enable them to transfer data to and from the System/3X host through the
LinkUp 5294. A comparable program on the System/3X host must also be written in order to let the
host know what is going on.
The COMPU module ensures that only data is sent to your computer; that is, no intensity or cursor-
positioning sequences are ever sent, even if the host requests them. This enables the data sent from the
System/3X host to the LinkUp 5294 to be converted and sent out the LinkUp 5294 asynchronous port to
your computer in the same order the LinkUp 5294 received it and vice versa. The LinkUp 5294 does not
perform any screen optimization when updating your screen of data (normally, the LinkUp 5294
updates your screen with only new data); instead it simply retransmits your entire screen every time.
When using one of the other terminal modules, the LinkUp 5294 discards any data received from your
terminal or PC when the System/3X host inhibits your keyboard input. However, with COMPU, the
LinkUp 5294 buffers the data until the host uninhibits your keyboard input, then sends the buffered
data to the host. This permits a computer (using COMPU) to continuously send data to the LinkUp
5294 without regard to whether keyboard input is inhibited or not. (With this capability, the LinkUp
5294 exercises flow control to your computer as necessary to avoid overrunning its buffers.)
NOTE
The COMPU module performs the normal ASCII-to-EBCDIC and EBCDlC-to-ASCIl
translations of the data handled by the LinkUp 5294. Additionally, the key sequences
defined for its emulation keyboard functions are identical to those used for the ADM3A
Terminal Module.