Specifications

ManualsBrandsRadio Shack ManualsComputersTRS-80 Model II

Radio

Shack

Disk

BASIG:

TRSDOS

will load and enter Disk BASIC

whenever

the command BASIC is

en-

tered. Typing

CMD

"S"

under BASIC

will

return control to TRSDOS.

BASIC

2. Type

BASIC

2 and

the TRS-80

wiu

be in

Level II

BASIC with

tuU

RAM

avai.lable.

Disk

BASIC

enhances

Level II

with

the

addition

several new

commands.

BASIC

Allows reloading

and reentry

into

Disk BASIC

from

TRSDOS

and re-

stores a

program

that was in

resident

when

you

exited

BASIC.

BASICR. Enhanced

Disk BASIC with

Iine

renumber

(NAME).

BASICR*.

Reloads

and enteis

BASICR

from

TRSDOS

and iestores

prcgran

that was

in lesident

when

you

eited

BASICR.

Disk

BASIC

and BASICR

a.llows

either

random

or sequentia.l

disk

fi.les.

pro-

grams

may

be stored in

BASIC

as ASCII

or compressed

format files.

All files

are

named.

A Filespec

name

may

consist

8-character

name,

3-character

ex-

tension,

B-charadet

password

and a

specifrc

disk

drive

nun rer.

(A.ll

except

the fi.le

name

are

optiona.L)

Ext€nllon

Comnatdal

CMD D

CaUs up DEBUG

(see

DOS).

CMD

"I"

Exit to

TRSDOS and issue

a command.

CMD

"R"

Restarts the 25 msec

heartbeat

(shouLd

be on Io! dLsk

operations)

CMD

"T"

Turns

otr25 msec

heartbeat. ThisDust

be done before cassette

YO is done.

DEF FN

AUows userdefined

luDctions

DEFUSR

Defmes

an entry

poini

for one of 10

user

macnrne

Language

routnes.

IIEX CONSTANTS

You

can type-in hexadecimal

and octal constants

precedug

them wjth &H

INSTR

Tells

you

the

position

of one strng within

MIDS

AUows MID$

on rhe lefr srde

of an equa

TIMES

Returns

date and time as

text

shrq.

Time and

date are

set bythe TIME and DATE

commands

under TRSDOS.

USBn

CaUs one oI10

possible

machine language

routnes

You can

both send and rerurn

an argu

Flle

Commard!:

CLOSE- Closes

a file

whjch

is curreitly

open. The

file must be ieopened

for use.

DISKDUMP

Aprcsram to write

a diskfile io tbe

DDe

pnnter (orvjdeo)

secto!

by sector in

hex code

and ASCII, 16

bytes at a time.

Shows how dara for-

mats

are stored on a disk.

EOE

Fuction

to check for

end of file.

GET- Reads a

specified lecord from

a random file

into

the file's associated

buffer

FIELD

Specifies the format

of a landom file

INPuT#filenubb€r-

Reads from

a sequentiat file.

KILL

Doletes a file.

LIIIE INPUT-R€ads

an entire line

ofdara,,sno.-

LOAD-Loads

aBASIC

program

lrom disk

into

LOF- Retulns

hjghest

physical

record nunber

LSET/RSET

Places dara Dio

a randomfile

buffer

preparation

fo. a write to

djsk.

MERGE

Cor$lrles

a BASIC

proqram

wrtl.

another

program

currently

in memory.

NAME

(BASIC

R only) Fenumber

the Ines

rn a

BASIC

program.

OPEN

Opens a fde fo'

use Thrs comman.

specifies sequent'ayrandom

rnput or output, the

iile number

and file name.

PRlNT#filenumber

Write ro a sequential

file.

PUT- Writes

data frcm a

butrer to a specrfied

.ecord number

in a random rile.

SAVE

Saves a

BASIC

proglamoDro

disk

(you

can CLOAI

atape

program,

then easily

pur

The IoUowtng lunctjons

are

avarlable ro convert

nurbe!.

ro rpx and

back dgarn. Thls wav

a 5 drgrr

mteger

may be stored

as 2 btles rarher rhan

ASCII

characters.

savins disk

space.

Convert

to Convert

'Ilpe

text

numenc

Bttes

integer

MKIS

srngle

prec'sion

MI<SS

double

precisron

MKDS

Manual

and Disks

May

Purchased

Separately

Buy

the ngw

revi8ions

Replacement

TRSDOS

Diskotte8.

26-0310,

14.95

cvl

cvs 4

cvD

TRSDOS,/DiEk

BASIC

Manual.

26-2104,5.95

Powerful

Disk

BASIC and TRSDOS

Operating

Systems

TRS-80

Mini-Disk

System

Also

Provides

Powerful

Enhancement8

to Radio

Shack's Level Il

BASIC

TRSDOS

ProgralDr

Included in

TRSDOS

is the software

Deeded

to operate

the disk

system,

plus

certair

programs

for file

management,

called

ities.

power-up,

IRSDOS is

automatically

Ioaded

into RAM,

occupying

4.2K.

AlI

overlay

scheme is

u€ed so

that onlv

the

needed

portions

of TRSDOS

use RAM

space

at any

given

time.

l /hen

Disk

BASIC

is caLled in,

an additional

5.8K

RAM is

used. Additionall]I

about

280

bytes

are required

for

each fi.le the

user

requests,

up to

15, hence

the minimum

RAM requirement

for

use

of a Mini-Disk

system

of 16K.

Radio

Shack intends

to continually

up-

glade

TRSDOS,

adding

new featules

with

each new

vetsion,

so check

with

your

local

Radio

Shack

store for ttforma-

tion

of the latest

available

version.

For

reference,

hete

are some

of the features

of TRSDOS

2.2.

UtUltles:

APPEND

Adds

one lile ro the

end ofanotner

(pnmarily

data frles)

ATTRIB

Assrgns or

changes

prorecrive

hle

passwords

wrth

5leveLs oj

proiecrron

prevenr

unauthonzed

file access

AUTO

-Automancallv

execures a command

BAC(UP

Copres

aU oI a drskerte

to another

diskette

{works

even on

a one dnve

system Dy

swappms

drsks

back and forrh)

CLOCK

Provides constanr

tlme drsplay

m rhe

upper

nght corner

ol the vrdeo

screen.

COPY-Copiesahle.

DATE

Sets the date whrch

can

be accesseo ov

1 IME$.n

Drsd

BASIC.

DEBUG

Machne

tansuage

debusser.

allowxLs

you

to sei

break

pornts,

execute srngle

srep rn.

struC.rons,

dynamically

watch

regFters

during

executron

and djsplay

memorv

m he{decrmal

ASCII

DIR D,splays

a direstory

oI aU fles

on a specjfred

drsk dnve Il requested,

wrU rnclude

toorcal

record

length.

end of frle and

space used.

DUMP

StoJes

machine

language

plogram

lrom

FORMAT

Format and

verily a blank

diskette

Unusable

sectors are marked.

FREE

Displays

free space iemaining

on clrsk

GETDIS(

Copies

any disk file or machine

tan.

guage program

onro

cassefte.

GETTAPE

Reads cassette data

and writes

rt rnto

KILL Deletes

a file making

space avartable

for

LIB

Drsptays

aU TRSDOS

svslem commands

LIST

LEts a irle ro

rhe vjdeo drsptay.

LOAD

Loads

a maciDne Language

prosram

from

Lrsts

a lle to rhe hne

prinreL

PROT

Changes

prorecrion

status

of au non,

system fiies on

a djskette

RENAME

Changes

the name ol

a fite.

TAPEDISK

-Loads

sysrem rapes

tnro RAM rhen

to a specified

disk file.

TESTI-

Program

to tesr the TRS-80s

memorv

read onlv

and random

access.

TEST2

BASIC

program

st.ess rest lor

the en,

TIME

Sets

the

rime ofday

for the

CLOCK display

and TIMES

BASIC command

TRACE

Prints ihe

program

counter on

the

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