Tandy color computer 8 basic User manual

Printed mKorea
811019430A

Tandy Color Computer 3
BASIC
Quick
Reference
Guide

Contents
Starr-Up .
Commands
Functions
Operators
Control Keys
Special Characters ..
Video Control Codes
Error Codes
1
2
18
23
24
25
26
27
Tandy Color Computer 3BASIC Quick Reference Guide-
©1986, Tandy Corporation.
All Rights Reserved.
Reproduction or use. without express written permission
from Tandy Corporation and/or its licensor, of any portion of
this manual is prohibited. While reasonable efforts have
been taken in the preparation of this manual to assure its
accuracy, Tandy Corporation assumes no liability resulting
from any errors or omissions in this manual, or from the use
of the information contained herein
Tandy and Radio Shack are registered trademarks of Tandy
Corporation.
Program Pak is atrademark of Tandy Corporation.
10 987654321

Start-Up
HT^m o° me osclav
2hycu are js ~g a:e ;e;.s-cn se'ect cnannel 3c
4and set :ne antenna s;V'tcn :o COMPUTER
3I* you a'e ^smg aP^og^am Pak '^se r: it noiA
ce'ore tur-.Tig on re co^Du^
4Turn on any accessor;, equipment (Dnnter Multi-
Pak interface etc
}
5Turn on the computer
6l
fyou are not using aProgram Pak the BASIC
start-up message apoears on the display, followed
by.
OK
7Some Program Pak documentation may ten you
to type in EXEC &HCOOO. To run these Program
Paks type iry
EXEC &HE010
The comouteris now ready for use.

Commands
Commands
ATTR c1,c2,B,U
Sets display attributes of ahigh-resolution text
screen.
dForeground color
c2 Background color
BCharacter blink on
UUnderline on
ATTR 3,2, U
AUDIO switch
Connects or disconnects cassette output to the
display speaker
ON Switches ON sound from cassette player
to display speaker.
OFF Switches OFF sound from cassette player
to display speaker.
AUDIO OFF
CIRCLE (x,y),r,c,h,s,e
Draws acircle on the current low-resolution
graphics screen.
x.y Center point
rRadius
cColor
hHeight/width ratio
sStarting point
eEnding point
CIRCLE (65 ,43) ,20,1 ,,.5,.8
CLEAR n,h
Erases variables, reserves string workspace, and
reserves high memory for machine language
programs
nString workspace size
hHighest BASIC memory address
CLEAR 200 ,20000
CLOAD "filename"
Loads program filename from cassette. If filename
is not specified. BASIC loads the first program file
found.
filename Name of desired program Name
can have as many as 8characters.
CLOAD "PUPPIES"
CLOADM "filename \o
Loads macnine-language program filename from
cassette !ffilename is not specified. BASIC loads
tne first macmne-ianguage program found.
filename Name ofdesired macnine-language
program Name can have as many
as 8characters.
oMemory address offset. If specified.
BASIC loads the machine-language
program obytes higher in memory
tnan normal.
CLOADM "GRAPHICS", 2730
CLOSE# d
Closes access to specified device or file If dis
not specified. BASIC closes all open devices and
tiles.
dNumber of device or file
CLOSE #-1
CLSc
Clears the text sc reen to aspecified color. When
in nigh-resolution text mode. BASIC also sets the
background color, if cis not specified BASIC
uses the current background color.
cColor code
CLS 2
COLOR cf, c2
Sets foreground and background colors of the
current low-resolution grapnics screen.
dForeground color code (0-8)
c2 BacKground color code (0-8)
COLOR 2,3
CONT
Continues program execution after aprogram halt
from tne 'break; key or aSTOP instruction
CONT
CSAVE "filename'^
Saves program filename on cassette.
filename Name of program to save. Name
can nave as many as 8characters.
ASelects ASCII format
CSAVE "NEWFI LE", A

Commands Commands
CSAVEM "filename",l,h,e
Saves machine-language program filename on
cassette.
filename Name of machine-language
program being saved. Name can
have as many as 8'Characters
/Lowest address of machine-
language program.
hHighest address of machine-
language program.
eExec address of machine-language
program.
CSAVEM "GRAPHICS ",28000, 29000,2803 2
DATA constant, constant,...
Stores numeric and string constants for use with
READ statement,
constant String or numeric constant(s). such
as: 127.2985 or Beagle.
DATA 45, CAT, 98, DOG, 24. 3, 1000
DEF FN name (variables) =formula
Defines anumeric function.
name Name of function. Must be avalid
variable name.
variables List of dummy variables used in
formula,
formula Defines the operation.
DEF FNA(B)=B*(B+(1 /B) )
DEFUSR n=addr
Defines the starting address of amachine-
language subroutine
nNumber of machine-language
routine (0-9)
addr Starting address of machine-
language routine, (0-65535)
DEFUSR0=28032
DEL 11-12
Deletes program lines.
// Lowest line number to delete.
12 Highest line number to delete
11 Deletes 1line.
-12 Deletes from beginning of program up to
and including 12
11- Deletes from and including 11 to the end
of the program.
11-12 Deletes from and including 11 to and
including 12.
DEL 40-75
DIM array{size),array(size),...
Dimensions one or more arrays.
DIM A$(3,10) #R4(22)
DRAW string
Draws aline on the current low-resolution
graphics screen as specified by string. The string
commands are:
AAngle
BM Blank move
CColor
DDown
E45 degree angle
F135 degree angle
G225 degree angle
H315 degree angle
LLeft
MMove draw position
NNo update
RRight
SScale
UUp
XExecute substring
DRAW "BM128,96;U2 5;R25;D2 5; L2 5"
EDIT line number
Edits aprogram line. After fetching specified line
number. EDIT recognizes several commands:
CChanges characters
DDeletes characters
HHacks off rest of line and permits
insertion
IInserts characters
KKills rest of line
LLists line being edited
SSearches for aspecified character
XExtends line
shTfT tReturns to line mode
EDIT 40
END
Marks the end of aBASIC program,
END

Commands Commands
EXEC {address)
Transfers control to amachine-language program
at address. If address is omitted, control is
transferred to address set in the last CLOADM.
EXEC 28032
FOR variable =n1 TO r\2 STEP n3
Defines the beginning of aloop. The end is
specified by NEXT,
variable Loop counter variable
n1 Starting value of counter
n2 Ending value of counter
n3 Increment or decrement value of
counter
FOR Z=35 TO 125 STEP 5
GET {sx,sy)-{ex,ey),array,G
Stores arectangle that is on the low-resolution
graphics screen in an array, for future use by the
PUT command.
sx,sy First corner of rectangle
ex,ey Opposite corner of rectangle
array Two dimensional array
GSelects full graphic detail storage.
Requires use of PSET, PRESET,
AND, OR, or NOT when using PUT
GET (22,34>-<47,38) ,M,G
GOSUB line number
Calls asubroutine beginning at the specified line
number.
GOSUB 330
GOTO line number
Jumps to the specified line number,
GOTO 125
HBUFF buffer,size
Reserves an area in memory for high-resolution
graphics.
buffer Number of buffer selected
size Defines buffer size. BASIC allows a
buffer to have amaximum size of
7931.
HBUFF 1,65
HCIRCLE (x,y),r,c,h,s,e
Draws ;acircle on the high-resolution graphics
screen.
*.y Center point
rRadius
cColor
hHeight/width ratio
sStarting point
eEnding point
HCIRCLE (55,64) ,20,2,3, .4, .7
HCLSc
Clears the high-resolution graphics screen to a
specified color.
cColor
If unspecified, BASIC uses current
background color.
HCLS 2
HCOLOR c1,c2
Sets foreground and background color on the
high-resolution graphics screen.
dForeground color (0-15)
c2 Background color (0-15)
HCOLOR 2,3
HDRAW string
Draws aline on the high-resolution graphics
screen as specified by string. The string
commands are:
AAngle
BM Blank move
CColor
DDown
E45 degree angle
F135 degree angle
G225 degree angle
H315 degree angle
LLeft
MMove draw position
NNo update
RRight
SScale
UUp
XExecute substring
HDRAW "BM128, 96 ;U25;R25;D25;L25"

Commands Commands
HGET {sx,sy)-{ex,ey),buffer
Stores arectangle that is on the high-resolution
graphics screen into abuffer previously set up by
the HBUFF command for future use by the HPUT
command.
sx,sy First corner of rectangle
ex,ey Opposite corner of rectangle
buffer Number of buffer
HGET (21 f32)-(28,37) ,1
HLINE (x1,y1)-(x2,y2),c,a
Draws aline on the high-resolution graphics
screen.
(x1,y1) Starting point of line. If omitted the
line starts at the last ending point, or
the center of the screen.
-{x2.y2) Ending point of HLINE.
cDefines color (Required). PSET
selects current foreground color.
PRESET selects current background
color.
aBox action (Optional). If omitted,
BASIC draws aline. If Bis used,
BASIC draws abox, using the
starting and ending points as
opposite corners of the box. If BF is
used, BASIC draws asolid box.
HLINE (22 f33)-(100 f90) ,3,BF
HPAINT (x,y),c1,c2
Paints an area on the high-resolution graphics
screen.
x,y Starting point
dPaint color
c2 Border color
HPAINT (55,66) ,2,3
HPRINT (x,y),message
Prints message on high-resolution graphics
screen.
x,y Starting character position
message String to print
HPRINT (20,12) /'HELLO!"
HPUT (sx,sy)-(ex,ey),b,a
Copies graphics from abuffer to arectangle on
the high-resolution graphics screen.
sx,sy First corner of rectangle
ex,ey Opposite corner of rectangle
bBuffer number
aAction used. Actions include:
PSET, PRESET AND, OR, NOT
HPUT <22,33)-(28,37) ,1 ,PSET
HRESET (x,y)
Resets apoint on the high-resolution graphics
screen to the background color.
HRESET (22,33)
HSCREEN mode
Selects ahigh-resolution graphics screen mode.
Modes 1-4 also clear the high-resolution graphics
screen.
mode Mode number. Mode numbers are:
—Low resolution
1—320 X192, 4-coior
2-320 X192, 16-color
3—640 X192, 2-color
4—640 X192, 4-color
HSCREEN 4
HSET (x,y,c)
Sets point x,y on the high-resolution graphics
screen to Color c. If you omit c, BASIC uses the
foreground color.
HSET (22,33,2)
HSTAT v1,v2,v3,v4
Returns information regarding the high-resolution
text screen cursor to variables v1,v2,v3, and v4.
v1 Character code
v2 Character attribute
v3 Cursor Xcoordinate
v4 Cursor Ycoordinate
HSTAT C,A,X,Y
IF test THEN mELSE 02
Performs atest. If the results are true, the
computer executes the first instruction (#1). If the
results are false, the computer executes the
second instruction (#2).
IF A<N THEN PRINT "A<N" ELSE PRINT "A> =N"

Commands Commands
INPUT vart,var2,...
Reads data from the keyboard, and saves it in
one or more variables.
INPUT K3
INPUT #-1 vart,var2,...
Reads data from acassette, and saves it in one
or more variables.
INPUT #-1 ,C$
LET
Assigns avalue to avariable (optional).
LET A3 =27
LINE (xhyiy{x2,y2),c,a
Draws aline on the current low-resolution
graphics screen.
(x1,y1) Starting point of line. If omitted the
line starts at the last ending point, or
the center of the screen.
-(x2,y2) Ending point of line,
cDefines color (Required). PSET
selects current foreground color.
PRESET selects current background
color.
aBox action (Optional). If omitted,
BASIC draws aline. If Bis used,
BASIC draws abox using the
starting and ending points as
opposite corners of the box. If BF is
used, BASIC draws asolid box.
LINE (22,33)-(27,39) ,PSET,BF
LINE INPUT
Reads data from the keyboard, and saves it in a
variable. Commas are characters, and not
delimiters.
LINEINPUT A$
LIST 11-12
Lists specified program hne(s) or the entire
program on the screen.
11 Lowest line number to list.
12 Highest line number to list.
11 Lists 1line.
-12 Lists from beginning of program up to
and including 12.
11- Lists from and including 11 to the end of
the program.
11-12 Lists from and including 11 to and
including 12.
LIST 20-45
LLIST 11-12
Lists specified program hne(s) or the entire
program on the printer.
11 Lowest line number to list.
12 Highest line number to list.
11 Lists 1line.
-12 Lists from beginning of program up to
and including 12.
11- Lists from and including 11 to the end of
the program.
11-12 Lists from and including 11 to and
including 12.
LLIST -90
LOCATE x,y
Moves the high-resolution text screen cursor to
position x.y.
LOCATE 20,12
LPOKE location, value
Stores avalue (0-255) in avirtual memory
location (0-524287 decimal or 0-S7FFFF
hexadecimal).
LPOKE 480126,241
MIDS (s,p,f)
Replaces aportion of the contents of string
variable swith another string.
sString being modified
pStarting position in string
/Length of section being modified
MIDS (A$,4 f3)="CAT"
10

Commands Commands
MOTOR
Turns the cassette ON or OFF.
MOTOR ON
NEW
Erases everything in memory.
NEW
NEXT v1,v2,...
Defines the end of aFOR loop.
v1,v2 Optional variable names used for
nested loops, tf used, list in reverse
order of FOR variables. If omitted,
only defines the end of the last loop
declared.
NEXT X,Y,Z
ON BRK GOTO line number
Jumps to line number when the Cbreak ;key is
pressed.
ON BRK GOTO 120
ON ERR GOTO tine number
Jumps to line number when an error occurs.
ON ERR GOTO 120
ON...GOSUB
Multiway call to specified subroutines.
ON AGOSUB 100,23 0,500,1125
ON.. .GOTO
Multiway branch to specified lines.
ON AGOTO 100,230,500,1125
OPEN m,#dev,f
Opens specified file for data transmission.
mTransmission mode
I—Input
O—Output
#dev #-2 —Printer
#-1 —Cassette
#0 —Keyboard or screen
fFilename
OPEN "0"#-1 /'DATA"
PAINT (x,y),c1,c2
Paints an area on the current low-resolution
graphics screen.
x,y Starting point
dPaint color
c2 Border color
PAINT (44,55) ,2,3
PALETTE CMP or RGB
Resets the palette registers to the standard colors
for acomposite monitor or atelevision set
(PALETTE CMP), or for an RGB monitor
(PALETTE RGB).
PALETTE CMP
PALETTE pr, cc
Stores Color Code cc (0-63) into Palette Register
pr (0-15).
PALETTE 1,13
PCLEAR n
Reserves nnumber of 1.5 Kgraphics memory
pages.
PCLEAR 4
PCLSc
Clears current low- resolution graphics screen with
Color c. If you omit c, BASIC uses the
background color.
PCLS
PCOPY sTO d
Copies low-resolution graphics from source page
to destination page.
sSource page number
dDestination page number
PCOPY 1TO 2
PLAY string
Plays music as specified by string. The string
commands are:
A-G Notes
LLength
OOctave
PPause
TTempo
#or+ Sharp
Flat
PLAY "L1 ;A; A#; A-"
12 13

Commands Commands
PMODE mode,page
Selects resolution and first memory page of alow-
resolution graphics screen.
mode —128 x96, 2-coior
1—128 x96, 4-color
2—128 x192, 2-co!or
3—128 x192, 4-color
4—256 x192, 2-color
If omitted, BASIC uses the last value
set. At power on, BASIC uses 2.
page Start page. If omitted, BASIC uses the
previously set page. At power on,
BASIC uses 1.
PMODE 4,1
POKE location.value
Stores avalue (0-255) in amemory location
(0-65535 decimal or 0-$FFFF hexadecimal).
POKE 28*00,241
PRESET (x,y)
Resets apoint on the current low-resolution
graphics screen to the background color.
PRESET (22,33)
PRINT message
Prints on the text screens.
PRINT "HELLO! "
PRINT #-1,dafa
Writes data to cassette.
PRINT #-1 ,A$
PRINT #-2,dafa
Prints on the printer.
PRINT #-2, "HELLO! "
PRINT TAB(n)
Moves the cursor to column non the low and
high-resolution text screens.
PRINT TABC22) ;"HELLO! "
PRINT USING"formar;ctefa
Prints numbers in the specified format on the text
screen. The format commands are:
#Formats numbers.
Decimal point.
Prints comma to the left of every
third character.
Fills leading spaces with asterisks.
$Prints leading dollar sign.
$$ Floating dollar sign.
+Leading or trailing sign,
fttt Exponential format.
Minus sign after negative
numbers.
!Prints first string character.
%spaces°/o String field. Length of field is
number of spaces plus 2.
PRINT USING ,, ##.#### ,, ;1 /3
PRINT @n,message
Prints message on low-resolution text screen at
position n.
PRINT ail ,"HELLO! "
PSET (x,y,c)
Sets point x,y on the current low-resolution
graphics screen to Color c. If cis omitted, BASIC
uses the foreground color.
PSET (22,33,2)
PUT {sx,sy)-(ex,ey),v,a
Copies graphics from an array to arectangle on
the low-resolution graphics screen.
sx,sy First corner of rectangle
ex,ey Opposite corner of rectangle
vTwo dimensional array
aAction used. Actions include:
PSET PRESET, AND, OR, NOT
PUT (22,33)-<27,39> ,A,PSET
READ varl Jvar21...
Reads the next item(s) in aDATA line. Saves data
in specified variable(s).
READ A1 ,B,C7
14 15

Commands Commands
REM comment
Lets you insert comments in aprogram line. The
computer ignores everything in the line, after the
REM.
REM THIS IS ACOMMENT LINE
RENUM newline,startiine.increment
Renumbers program lines.
newline New starting line
startline Line where renumbering starts
increment Step value for lines
RENUM 1,1,10
RESET (x,y)
Resets apoint on the low- resolution text screen to
the background color
RESET (22,33)
RESTORE
Sets the computer's pointer back to the first item
on the first DATA line.
RESTORE
RETURN
Returns the computer from asubroutine to the
BASIC word following GOSUB.
RETURN
RUN
Executes aprogram.
RUN
SCREEN type,colors
Selects low-resolution screen modes and color
sets.
type —Text
1—Graphics
colors —Color set
1—Color set 1
SCREEN 0,1
SET (x,y,c)
Sets point x,y on the low-resolution text screen to
Color c. If you omit c, BASIC uses the foreground
color
SET (11,11 ,3)
SKIPF filename
Skips to next program on cassette tape or to the
end of aspecified program.
filename Optional name of program to skip
over
SKIPF "DATA"
SOUND tone,duration
Sounds aspecified tone for aspecified duration.
tone 1-255 sets pitch
duration 1-255 sets duration
SOUND 33,22
STOP
Stops execution of aprogram.
STOP
TIMER =n
Sets timer to n.
TIMER=120
TROFF
Turns off program tracer.
TROFF
TRON
Turns on program tracer.
TRON
WIDTH n
Sets the text screen to resolution n\
32 —32 X16 (low-resolution text)
40 —40 X24 (high-resolution text)
80 —80 X24 (high-resolution text)
WIDTH 80
16 17

Functions
ABS (n)
Returns the absolute value of n.
A=ABS(B)
ASC (string)
Returns the code of the first character in string.
A=ASC(B$)
ATN (n)
Returns the arctangent of nin radians.
A=ATN(B/3)
BUTTON (n)
Returns 1if Joystick Button nis being pressed;
if Joystick Button nis not being pressed, ncan
be: —Right joystick, Button 1(old joystick)
1—Right joystick, Button 2
2—Left joystick, Button 1(old joystick)
3—Left joystick, Button 2
A=BUTTON(0)
CHR$ (n)
Returns the character corresponding to character
code n.
A$=CHR$(65)
COS [angle)
Returns the cosine of an angle using radians.
A=COS(B)
EOF(cf)
Returns FALSE (0) if there is more data; TRUE (-1)
if end of file has been read.
dDevice number:
-1 Cassette
IF E0F(-1)=-1 THEN 220
ERLIN
Returns the BASIC line number where an error
has occurred.
IF ERLIN =110 THEN 200
ERNO
Returns the BASIC error number for the error that
has occurred.
IF ERNO =20 THEN CLOSE
Functions
EXP (n)
Returns anatural exponential number (e A/7).
A=EXP(B*1 .15)
FIX (n)
Returns the truncated integer of n. Unlike INT, FIX
does not return the next lower number for a
negative n.
A=FIX(B-.2)
HEX$ (n)
Returns astring with the hexadecimal value of n.
PRINT HEX$CA) ;" =";
A
HPOINT (x,y)
Returns information on point x,y from the high-
resolution graphics screen:
Point is reset
Code Point is set
IF HPOINT(22,33>=0 THEN 200
INKEYS
Checks the keyboard and returns the key being
pressed or, if no key is being pressed, returns a
null string (" ").
A$=INKEY$
INSTR (p,stt)
Searches astring. Returns location of atarget
string in asearch string.
pStart position of search
sString being searched
tTarget string
A=INSTR (1 ,H5$, "BEETS")
INT (n)
Converts nto the largest integer that is less than
or equal to n.
A=INT(B+.5)
JOYSTK (/)
Returns the horizontal or vertical coordinate (j) of
the left or right joystick:
—Horizontal, right joystick
1—Vertical, right joystick
2—Horizontal, left joystick
3—Vertical, left joystick
A=JOYSTK(0)
18 19

Functions Functions
LEFTS (stringjength)
Returns the left portion of astring.
length Specifies number of characters
returned.
A$=LEFT$(B$,3)
LEN (string)
Returns the length of string.
A=LEN(B$)
LOG (n)
Returns the natural logarithm of n.
A=L0G(B/2)
LPEEK (memory location)
Returns the contents of avirtual memory location
(0-524287 decimal or 0-$7FFFF hexadecimal).
A^LPEEK(&H7FFF0)
MEM
Returns the amount of free memory.
A=MEM
MID$ (s,p,l)
Returns asubstring of string s.
sSource string
pStarting position of substring
/Length of substring
A$=MID$ (B$,Z,2)
PEEK (memory iocation)
Returns the contents of amemory location
(0-65535 decimal or 0-&HFFFF hexadecimal).
A=PEEK (30020)
POINT (x,y)
Returns information on point x,y from the low-
resolution text screen:
-1 Point is part of an alphanumeric
character
Point is reset
Code Point is set
A=P0INT (22 f33)
POS (dev)
Returns the current print position.
dev Print device number:
—Screen
-2 —Printer
a=pos (0)
PPOINT (x,y)
Returns information on point x.y from the low-
resolution graphics screen:
Point is reset
Code Point is set
A=PP0INT (22,33)
RIGHTS (stringjength)
Returns the right portion of astring.
length Specifies number of characters
returned.
A$=RI6HT$ <B$,4)
RND (n)
Generates a"random" number between 1and n
if n>1, or between and 1if n=Q.
A=RND (0)
SGN (n)
Returns the sign of n:
-1 —Negative
0-0
1—positive
A=SGN(A+.1)
SIN (angie)
Returns the sine of angle using radians.
A=SIN(B/3.141 59)
STRINGS (i,c)
Returns astring of arepeated character.
/Length of string
cCharacter used. Can be acode, or a
string.
A$ =STRING$(22,'*A")
STR$ (n)
Converts nto astring.
A$=STR$(1 .234)
SQR (n)
Returns the square root of n.
A=SQR(B/2)
TAN (angie)
Returns the tangent of angle using radians.
A=TAN(B)
21
20

Functions
TIMER
Returns the contents of the tinner
(0-65535).
A=TIMER/18
USRn (argument)
Calls machine-language subroutine n, passes it
an argument, and returns avalue from the
subroutine to the BASIC program.
A=USR0(B)
VAL {string)
Converts astring to anumber.
A=VAL("1 .23")
VARPTR {variable)
Returns apointer to where avariable is located in
memory.
A=VARPTR(8)
Operators
TExponentiation
-» +Unary negative, positive
VMultiplication, division
+, -Addition and concatenation, subtraction
NOT Logical operators
AND
OR
<, >, =, Relational tests
<=,>=, <>
22 23

Control Keys
©Cancels last character typed; moves
cursor back one space.
dHlFUED Erases current Sine.
fBREAK) Interrupts program, and returns to
command level.
(clear) Clears the screen.
(enters Marks the end of the current line
Space Bar Enters aspace (blank) character, and
moves the cursor forward one space.
dEHED® Causes arunning BASIC program to
pause. Press the space bar to
continue.
(shift )(i?) All-caps/upper-lowercase keyboard
switch.
CED Hold down during power up to select
alternate color set.
&H
&0
Special Characters
Abbreviation for REM.
Makes variable string type.
Makes numeric constants hexadecimal.
Makes numeric constants octal.
Separates statements on same line.
Same as PRINT.
PRINT punctuation: spaces over to the next
PRINT zone.
PRINT punctuation; separates items in a
PRINT list, but does not add spaces when
printed.
24 25

Video Control Codes Error Codes
Dec Hex PRINT CHR$(code)
88Backspaces and erases current
character.
13 DLine feed with carriage return.
32 20 Space
AO 18 Already Open
BS 8Bad Subscript
CN 16 Cannot Continue
DO 9Attempt to Redimension Array
DN 19 Device Number Error
OS 24 Direct Statement
/0 10 Division by Zero
FC 4Illegal Function Call
FD 17 Bad File Data
FM 21 Bad File Mode
HP *39 Hires Print Error
HR 38 Hires Graphics Error
ID 11 Illegal Direct Statement
IE 23 Input Past End of File
10 20 Input/Output Error
LS 14 String Too Long
NF Next Without For
NO 22 File Not Open
OD 3Out of Data
OM 6Out of Memory
OS 13 Out of String Space
OV 5Overflow
RG 2Return Without Gosub
SN 1Syntax Error
ST 15 String Formula Too Complex
TM 12 Type Mismatch
UL 7Undefined Line
26 27