Radio Shack TRS-80 Quick Reference Manual page 6

Left-justifies data within
L5ET field name
=
d.-t.-
specified field name.
L'SET
A~:"APPLES"
MERGE II/en.-me.ft Loads a program disk (which l'las
saved in ASCII- the A option) and marges it with program
currently in memory. If programs have corresponding lina
numbers. the program on disk Will erase the program in
memory.•R is optional: if used, BASIC will immedialely run
the merged program afler It IS loade<!.
MERGE "SUe/BAS" MERGE "NEIUtlAS" ,R
KILL filename:d Deleles or erases specified Iile (rom
diskette. The extension must be included on Mename.
Il
d
is omitled. Drive
0
is used.
KILL "OOCTOR/EXP"
klLL "OINNER/REC:I"
LET
Asslgns value
10
variable (optional).
LET
A~
E
"JOB A"
LIST
Lists speclhed Ime(s) Of enlue program
00
screBn
LIST
LIST 50-85
LIST 30
LIST -30
LIST 30-
LUST
USI
sp9CIhed program Ilne(s) or efllne program 10
pnnler
LL 1ST
LLiST 50-85
LU
ST 31ll
LLiST ·30
LLIST 30-
UNE (d.JlJ),(.Z.Jl2). PSET or PRESET. RF Drawa
line Ilom (xl.y" to (x2.y2). If (x l,yI) IS omltled. the lasl
end point
or
(128.96) lS used, PSET selects foreground
coIor and PRESET selects background color. R draws a box
Wllh (xT.yl) and (x2.y2) as the OPPOSlng corners. RF WIll fill
ln the box wllh loreground color,
LIN.E (S,31-(6,61.PSET
UNE
INPUT Input line from keyboard.
LINE INPUT
"ANSWERw;X~
LOAD lI/erJilu...:d.R
Load specrfied BASIC program file
Irom diskelle into memory. :dis opllooal; il omitted. Olive 0
(or whalever dflve was Selecled lOf Masler Drive specilied by
DRIVE) Is used. ,R IS opllOflal, If used. SASIC Will run lhe
program Immediately a'ter it is loaded.1f Menamedoes not
have an eXlenSlon, BASIC uses/BAS
LOAO "PROCRAH" ,R LOAO "ACCTS/6AS: 1"
LOADM Rlen.-me. oll.et addre..
Loads a
machine-language program lile Irom disk. Il filename does
not have an extension. BASIC uses
IaiN
offset address is
optiOllal; If omilted, program loads where specilied inSide
the program.
LDADM "PROG/COR,3522"
LDADH "TESTI"
FIELD # buller. ReId .Ize AS Reid n.-me Organizes
the space wlthin a direct access buffer into fields. assigns
field size. and names the field.ISee OPEN.)
FIELD .1.10 AS
A~.
12 AS
B~,
5 AS
C~
FILES buHer#. buller .Ize
Tells BASIC how many
bulfers to reserve in memory (buffer #) and Ihe tOlal
number 01 bytes 10 reserve for Ihese bullers (buffer size). If
thlS command is nol used. BASIC will reserve enough
memory space lor buffers
1
and
2
and reserve a lolal of
256 bytes lor lhase bufiers.
FILES 5.500 FILES 3.100
FOR••TO Creales a Ioop in program whlch
(he
Computer
5TEPI must repaat Irom the lirsl number 10 lhe last number
NEXT yoo Speclfy. Use STEP 10 specify how much 10
Il'lCfemenl the number each tlme Ihroogh lhe Ioop. Il you
omit STEP.
ooe
is used
FOR X:2 TO 5 :NEXT X
FOR A:l TO 10 STEP 5:NEXT A
FOR H:30 TD 10 STEP -5:NEXT
H
GET (.t.-rt)·(end). de.ti.atJon. G Reads lhe graphie
contents
of a lectangle into an array lor future use by
PUT.
GET (5.201-{3.81
.V.t
GET Ifbuller.rec.ordlf Gels the specified record number
and puts il in the bullel. record' is optiona!. if omilled.the
next recold is used. (See OPEN.)
CET .1.5 CET.Z.3 CET lOI
GOSUB Galls a subloullne beglnmng al specified line
number.
COSUB 500
GOTO Jumps to speclfied line number.
GOTO 300
IF I_t THEN..• .-c.tion
J
ELSE• .-d;on Z
Performs a
tesl. Il it is true.lhe Compuler execules actlOft 1. If taise,
action
2 is execule<:!
IF A:5 THEN 30
INPUT Causes Ihe Compuler 10 stop and awaltlnputtrom
the keyboard
INPUT X~
INPUT "NAHE"
;N~
INPUT #bul'er. v.-rl.-ble name. • • .
Inputs data lrom
specified buffer and assigns each data segment in the
bufler to the specified variable name. (See OPEN.)
INPUT
.1,
A~ ";l~
INPUT#-l Inputs dala from cassette,
INPUT#-l,A
IN5TR (po.ltlon • • e.-rdl. '.-rgel)
Searches for the lirst
occurrence of
largat string in search string beginning at
position, Returns the position at which the match is found.
?
INSTR (5,X~.V~l
,
8
9