Cromemco Multi-User BASIC Manuale utente

Five Dollars

(

Part

No.

023-0061

CROMEMCO

Multi-User

BASIC

Instruction

Manual

CROMEMCO,

Inc.

280

Bernardo

Avenue

Mountain

View,

94043

ｃｯｰｹｲｾｧｨｴ

1979

CROMEMCO,

INC.

ALL

RIGHTS RESERVED

November

1979

Table

Contents

Introduction

••••••

Overview

••••••••

Getting

Started

••

Backup

•••••••••

••••

• • 2

•

••

....

.........

User

Protection

••••••••••••••••

Directory

Protection

•••••••••

Protection

File

Integrity

••

Protection

from

Deadlock

••••••

•

•••••

• • • • • • • • • • • 6

Description

the

Operating

System.

.10

Attributes

the

Operating

System

••••

Type

Ahead

•••••••••••••••

•••••••••••••

CDOS

Call

Display

Job

Information.

.12

•

••••

•

•••

.............·

·....

.15

....•..

••

•

••••••

..••....•....•

•

.19

.21

•

.22

•

.23

•

••••

•

.25

• • • •

.27

•

•••••

••••••.•

•

.31

Commands.

...

·....

·...

·.

...

.....

Multi-User

CDOS

Intrinsic

BACKG.

BAS.

CHA.

DETACH

••

ATTACH.

••••

LOGOFF

••

MORE.

PRT:

•••

RESCUE

•••••••••••••••••••

SET

•••••••••••

SYS.

TIME

•••••••••••••••

·.

Multi-User

BASIC

Variable

Names.

Line

Names.

Variable

and

Line

Names.

.32

•

•••

••••

Multi-User

BASIC

Commands

••

...

..35

CLEAR

•••

.....·

...

·.... ..... ·.... •

COMMON.

...

·......

..37

DELREM. .

...

••••

EXPAND. ......·

...

..·.·

•

••

•••

THEN

• • •

ELSE.

••

ENDDO.

•

.42

LVAR

•••

...

...... ·

...

••

,.44

NOLIST.

·. .

•

•••

OPEN

•••

.48

PROTECT. .....·

...

·.... ...·...

••

Cromemco

In-Line

BASIC

Editor

•••••••••••••••••

EDIT

•••••••••••••••••••••••••••••••••••••••••

FIND

•••••••••••••••••••••••••••••••••••••••••

CHANGE

•••••••••••••••••••••••••••••••••••••••

Multi-User

BASIC

Error

Messages

••••••

•••••

10.

Modification

Multi-User

BASIC

••••••••••••••

Customizing

the

Command

Line

•••••••••••••••••

Access

CDOS

Programs

Commands

•••••••••••

Restricting

Use

the

CHA

Command

•••••••••••

Restricting

Use

the

Command

••••••••••

Restricting

Use

the

KILL Command

••••••••••

Machine

Level

BASIC

Instructions

•••••••••••••

Disk

Drive

Configuration

•••••••••••••••••••••

11.

Hardware

Configuration

••••••••••••••••••••••••

System

RAM

Cards

•••••••••••••••••••••••••••••

User

RAM

Cards

•••••••••••••••••••••••••••••••

Disk

Controller

Card

•••••••••••••••••••••••••

Serial

Interface

Card

••••••••••••••••••••••••

Interrupt

Priority

Cable

•••••••••••••••••••••

Special

Configuration

••••••••••••••••••••••••

Index

(

Multi-User

BASIC

Instruction

Manual

Introduction

Multi-User

BASIC

Instruction

Manual

Introduction

Overview

romemco'

new

Mul

ti-User

BASIC

Operating

System

includes

features

which

are

usually

found

only

large

computers.

composed

ｴｩｭ･ｾｳｨ｡ｲｩｮｧ

operating

system,

Multi-User

COOS,

and

enhanced

version

Cromemco

16K

Extended

BASIC.

The

hardware

configuration

requi

red

for

the

operation

the

Multi-User

BASIC

Software

System

shown

chapter

this

manual.

The

current

version

includes

many

new

features.

Users

are

longer

restricted

running

BASIC.

One

user

can

run

the

assembler,

for

example,

while

another

running

the

FORTRAN

compiler,

and

third

running

BASIC.

The

new

version

allows

users

start

several

jobs

from

the

same

terminal

using

the

Multi-User

COOS

command,

DETACH.

Other

new

COOS

commands

are:

ATTACH

retrieves

aDETACHed

job.

BACKG

allows

job

run

the

background.

BAS

loads

and

runs

BASIC.

CHA

the

command.entered

order

change

diskettes.

-KILL

allows

jobs

terminated

from

selected

terminals.

LOGOFF

allows

users

terminate

their

sessions.

allows

users

obtain

larger

memory

allocations.

-PRT:

allows

the

use

r s

dot

....

matrix

fully

printer

with

CTRL-P.

access

either

formed

character

RESCUE

allows

users

initialize

disabled

terminals.

Multi-User

BASIC

Instruction

Manual

Introduction

-SET

-SYS

-TIME

allows

the

user

terminal-l

set

the

time,

date,

and

adj

ust

the

clock

rate.

Each

user

may

set

the

number

nulls

after

each

RETURN,

automatic

line

feed

after

each

RETURN,

and

user-selected

ERASE

character.

dis

a y s

for

use

r s :

job

urn

b e r ,

status

(busy

wai

t),

whether

BAS

loaded,

which

CDOS

program

running,

how

much

memory

allocated,

terminal

number

and

user

name,

and

the

time

that

user

logged

on.

displays

the

current

time

and

date.

Since

Multi-User

COOS

buffers

input

from

the

terminal

keyboards,

users

can

enter

characters

before

the

executing

program

requests

them.

This

feature,

commonly

known

"type-ahead",

often

very

convenient

use.

Multi-User

BASIC

includes

the

following

attributes

addition

those

16K

Extended

BASIC:

line

BASIC

text

editor

upper

and

lower

case

program

text

variable

names

characters

long

line

and

subroutine

names

characters

long

many

new

statements

and

commands

such

PROTECT

which

insures

that

file

cannot

read

from,

written

to,

erased

•••

THEN

•••

ELSE

•••

ENOOO

ｾ

COMMON

for

linking

BASIC

programs

LVAR

which

lists

the

variables,

functions,

and

label

names

the

program

together

with

their

current

values

NOLIST

and

OELREM

which

can

used

protect

proprietary

SAVEd BASIC

programs

Multi-User

BASIC

Instruction

Manual

Introduction

Getting

Started

Turn

the

terminals,

disk

drives,

and

computer.

Set

each

the

terminals

9600,

481313,

2400,

1200,

300,

150,

110

baud.

The

terminals

need

not

all

set

the

same.

Place

the

Multi-User

system

diskette

Disk

Drive

Depress

the

RETURN

key

terminal-l

several

times.

prompts

will

issued

for

the

name

the

user,

the

date,

and

the

time.

After

the

time

set,

the

following

prompt

issued:

place

diskette

Drive

and

press

any

key

This

provides

the

option

exchanging

the

disk

Drive

before

going

on.

Prompts

are

then

issued

determine

whether

not

diskettes

are

loaded

into

the

remaining

drives

the

system.

All

files

left

open

the

diskettes

any

the

drives

will

closed.

This

provides

way

rectify

the

situation

when

the

computer

inadvertently

reset

with

files

open.

Additional

users

may

then

log

the

other

terminals.

Log-on

for

each

these

users

accompl

ished

pushing

RETURN

several

times

that

the

operating

system

can

detect

the

baud

rate

the

terminal.

prompt

will

then

issued

for

the

user's

name.

Wr i

te-protecting

skettes

not

necessary

Multi-User

BASIC.

Write-protected

diskettes

are

those

sks

notch

exposed

and

those

disks

with

the

notch

covered.

There

facility

for

write-protecting

files

instead.

See

the

PROTECT

command.

Backup

strongly

recommended

that

backup

disk

made

immediately

upon

receiving

your

FDM

software

package.

Multi-User

BASIC

Instruction

Manual

User

Protection

User

Protection

(

Multi-User

BASIC

Instruction

Manual

User

Protection

Multi-User

BASIC

provides

several

different

kinds

protection

for

users.

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