VISUAL 100 - Keyboard Controls and L.e.D.s; Figure 4-1 Visual 100 Keyboard Layout

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VISUAL

TECHNOLOGY

INCORPORATED

,

540

MAIN

STREET

,

TEWKSBURY,

MA

01876

4.

KEYBOARD CONTROLS AND L.E.D.'S

This

section

describes

the

various keys and L.E.D.

indicators

on

the

VISUAL

100

keyboard

and also

describes

the

cod

~

s

transmitted

and

effects

of

each key

on

the

terminal.

Please

note

that

the

effect

of

each

key

on

the

terminal

may

vary

depending

on

the

SET

-UP

features

selected.

For

example,

the

current

state

of

the

ANS

l/VT

-

52

feature

will

cause

the

codes

transmitted

by

some

keys

to

be

different.

The

VISUAL

100

keyboard

is

illustrated in Figure 4-1.

Figure 4-1 Visual

100

Keyboard

Layout

NOTE

The

actions

taken

by

the

various

key

depressions listed

in

this

section,

assume

the

transmitted

code(s) are

"echoed"

back

to

the

terminal.

The

transmitted

codes

can

have

no

effect

on

the

terminal

unless

echoed.

This

key

is

used

to

alternately

enter

and

exit

SET-UP

mode.

If

the

Auto

XON/XOFF

feature

is

enabled,

this

key will

transmit

the

XOFF

code

(DC3)

when

SET-UP

mode

is

entered,

and

transmit

the

XON

code

(DC1)

when

SET

-

UP

mode

is

exited.

If

the

Auto

XON/XOF

F

feature

is

disabled,

the

SET-

UP

key will

transmit

no

codes

when

entering/exiting

SET-UP

mode.

Depressing

the

ESC

key

will cause

the

terminal

to

transmit

the

ESC

control

code

(octal

033).

This

code

is

used

to

initiate

multi-code

control

sequences.

Section

5.3

details all

multi-code

sequences

and

their

effects

on

the

terminal.

21

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