BEEHIVE SUPER BEE - 2.5 CONTROL AND EDIT FUNCTION OPERATIONS; 2.6 OPERATION CODES; 2.7 TIMING CONSIDERATION

56 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

e.

Repeat

steps

c.

and

d.

until

several lines

are

displayed

on

the

monitor.

f.

Depress

RESET

key

and

then

depress

the

FMT key

to

enter

Format

mode.

g.

Depress

the

CL

EAR

key.

The

cursor

shou

Id

be

in

the

first

unprotected

position.

From

this

point,

data

may

be

entered.

Perform

the

checkout

as follows:

a.

Type

several

characters

until

the

cursor

skips

over

the

protected

area.

b.

Continue

to

fill

in

the

form

until

the

last

character

entered

causes

the

cursor

to

move

to

the

home

position.

c.

TAB

and

BACK TAB

to

the

first

unprotected

location

in

several fields,

to

ensure

that

these

functions

operate

properly

in

format

mode.

2.5

CONTROL

AND

EDIT

FUNCTION OPERATIONS

The

control

functions

may

be

generated

from

the

Keyboard

or

by

receipt

of

commands

from

the

I

/0

port.

Table

2-1

provides

the

sequence

of

operation

for

each

control

function

when

generated

from

the

key-

board

or

when

received

from

the

I

/0

port.

Figure 2-3

depicts

the

ASCII

codes

for

each

control

function

or

character

generated

from

the

keyboard

or

received

from

the

I /O. .

2.6

OPERATION

CODES

The

SUPER

BEE

code

structure

consists

of

32

ASCII

control

codes,

96

ASCII

alphanumeric

characters,

and

96

escape

sequence

control

codes.

A

switch

is

provided

on

the

rear

of

the

terminal

so

that

all lower-case

alphabetic

characters

are

translated

into

their

upper

case

equivalents.

The

operation

codes

provide

the

necessary

functions

that

are

not

defined

in

the

control

and

edit

group

functions.

These

functions

may

be

generated

from

the

keyboard,

received

at

the

1/0

port,

or

may

be

internally

generated

by

present

circuitry.

Table

2-3 lists

the

codes

and

describes

their

functions.

2-7

TIMING

CONSIDERATION

Certain

SUPER

BEE

functions

require

longer

than

one

character

time

at

high trans-

mission rates.

The

number

of

fill

characters

required

to

fill

these

intervals

are

given

in

Table

2-4.

Although

any

character

may

be

used,

the

NULL

character

(000 Octal)

is

suggested since

this

code

will be

completely

ignored

and

will

not

affect

the

AUTO-NEW LINE

feature

of

the

ter-

minal, i.e.,

the

CR

and

LF

may

be

separated

by

NULL

codes

and

the

N/L

code

will still be

stored

at

the

position

where

the

CR was per-

formed.

2-17

Table of Contents