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Configuring the Terminal
inHndShHG)
and
i nh DC2{H)
(Cont'd)
2-6
Auto Term{J)
and
ClearTerm{K)
Table 2-2. Terminal Configuration Menu Fields (Continued)
2.
Computer sends <DC1); terminal transmits block of data.
3. Computer sends <DCl ); termi nal responds with <DC2); computer responds with another <DCl >;
terminal transmits block of data.
In general, the I nhHndShk (G) and i nh DC2{H) fields have the following effects:
inhHndShk{G) • YES
inhDC2{H) • YES
Both • YES
eliminates the use of the DC1 handshake (terminal will either use the
DC1/DC2/DCl
handshake or no handshake at all).
eliminates the use of theDCl
IDC2/DCl
handshake (terminal will either use
the DCl handshake or no handshake at all).
No handshake.
Specifically, however, the type of handshaking used for block transfers is determined by a
combination of the following factors:
1. The type of block transfer to be performed.
2. What mode the terminal is currently operating in (character, block line, block page, or modify
mode).
3. The setting of the inhHndShk(G) and inh DC2{H} fields.
If your terminal is connected to a Hewlett-Packard computer system, you will find that the default
settings for these fields (both OFF) are usually adequate for your purposes. If you are concerned
about the specific type of handshake to be used for one or more of the particular types of block
transfers, however, you should use the following summary to verify (or alter) the settings of the
inhHndShk(G) and Inh DC2(H> fields:
1.
GIll
key in block mode; or
GIll
or _
key in modify mode; or
Transmit only (T) user key in block page mode.
inhHndShk{G) (i9nored)
inhDC2(H)
NO - - -)DCl
IDC2/DCl
i nh DC2(H)
YES - - ->no
hand~hake
2.
GIll
key in character mode.
inhHndShk{G) • YES
inhDC2(H} • NO--->DClIDC2/DCl
Anyother combination --->nohand.hake
3. Transmit only (T) user key in block line or character mode; or
Cursor sense, terminallD status, primary status, secondary status, or device status request; or
Device control completion code.
inhHndShk(G) • NO--->DCl
inhHndShk(G) 'YES
inhDC2(H) •
NO--->DC1/DC2/DCl
inhHndShk(G)
=
YES
inh DC2(H) • YES - - -)no hand.hake
Defaults: inhHndShk(G)
=
NO
i nh DC2(H)
=
NO
These fields are the functional equivalents of keyboard interface straps J and K on an HP 2645
terminal.
c
(
(
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