PC Basic Course, command list list compendium commands instructions functions Basic V2 Commodore 64

Commodore 64 Basic V2 Command List

Here is the complete list of Commodore 64 Basic V2 commands, functions and reserved variables, with a simple explanation. This is a simple compendium to remember all the commands, instructions and functions, when you already know how to use them! The Commodore 64's Basic V2 has far fewer instructions than the Commodore 16, 116, Plus/4 Basic V3.5 and compared to Commodore 128 Basic V7.

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ABSReturns the absolute value of a numberFunction, numerical
ANDReturns true if both conditions are trueOperator, logical
ASCReturns the numerical value of a charFunction, numerical
ATNReturns the arctangent of a numberFunction, numerical
CHR$Returns the character corresponding to the numberFunction, string
CLOSECloses a fileInstruction/command
CLRDelete variables arrays, data, …Instruction/command
CMDChanges the data output to other peripheralInstruction/command
CONTResumes execution of a BASIC programCommand
COSReturns the cosine of an angle (rad)Function, numerical
DATAStores constant information in the program codeInstruction/command
DEF FNDefines a user-defined functionInstruction
DIMAllocates space in array memory for a new arrayInstruction/command
ENDEnds the processing of the current programInstruction/command
EXP“e” with the power given by the argumentFunction, numerical
FNExecutes a function defined by DEF FNFunction, numerical, special
FORProgram loop start (FOR … TO … STEP … NEXT)Instruction/command
FREReturns the number of unused bytes of BASIC RAMFunction, numerical, special
GETReads one or more chars from the keyboardInstruction

GET#Reads single characters from the specified deviceInstruction/command, special
GO TOJumps to a line numberInstruction/command
GOSUBJumps to a subroutine … RETURNInstruction/command
GOTOJumps to a line numberInstruction/command
IFTests a condition IF … THEN or IF … GOTOInstruction/command
INPUTReads data from the keyboardInstruction
INPUT#Reads data from a file stored on peripheral deviceInstruction
INTRounds a numberFunction, numerical
LEFT$Left chars of a stringFunction, string
LENReturns the number of characters in a stringFunction, numerical
LETAssigns values in a variableInstruction/command
LISTDisplays the BASIC program in memoryInstruction/command
LOADLoads a programInstruction/command
LOGNatural logarithm with the basis eFunction, numerical
MID$Inner chars of a stringFunction, string
NEWClears RAM and programInstruction/command
NEXTProgram loop end (FOR … TO … STEP … NEXT)Instruction/command
NOTReverses true to falseOperator, logical
ONContruct ON … GOTO, ON … GOSUBInstruction/command
OPENOpens a file or a channelInstruction/command

ORReturns true if one or both conditions are trueOperator, logical
PEEKReturns the memory contentFunction, numerical
POKEChanges the content of any memory addressInstruction/command
POSDetermines the actual position of the cursorFunction, numerical, special
PRINTPrints data to the current output deviceInstruction/command
PRINT#Stores data in a fileInstruction/command
READReads constant values from DATAInstruction
RESTOREClears the pointer of the next data valueInstruction/command
RETURNFinishes a subroutine: GOSUB … RETURNInstruction/command
RIGHT$Right chars of a stringFunction, string
RNDGenerates a random floating point numberFunction, numerical
RUNStarts a programInstruction/command
SAVESaves a programInstruction/command
SGNReturns the sign of a number (-1, 0, 1)Function, numerical
SINReturns the sine of an angle (rad)Function, numerical
SPC(Sets a number of spacesFunction, PRINT (Carry = 0!)
SQRCalculates square root of a numberFunction, numerical
STGets I/O status byteReserved variable
STEPProgram loop increment/decrement (FOR … TO … STEP … NEXT)Instruction/command, special

STOPBreaks a programInstruction/command
STR$Converts numerical values or variables into a stringFunction, string
SYSCalls an assembly language subroutineInstruction/command
TAB(Sets the cursor columnFunction, PRINT (Carry = 1!)
TANReturns the tangent for a given angle (rad)Function, numerical
THENTests a condition IF … THENInstruction/command, special
OFGets the system time (seconds/60)Reserved variable
TI$Gets or Sets the system time (HHMMSS)Reserved variable
TOProgram loop target (FOR … TO … STEP … NEXT)Instruction/command, special
USRCalls an assembly language subroutine with argumentFunction, numerical/string
VALReturns the numerical value of a stringFunction, numerical
VERIFYVerifies a saved programInstruction/command
WAITWaits for a memory location to assume specific valuesInstruction/command
+SumOperator, numerical/string
SubtractionOperator, numerical
*MultiplicationOperator, numerical
/DivisionOperator, numerical
^ExponentOperator, numerical
>GreaterOperator, logical
=EqualOperator, logical
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<LessOperator, logical
π (pi)3.1415926…Function, numerical, special

On the website www.valoroso.it and on the ValorosoIT YouTube channel, I am publishing several episodes to learn how to program in Basic, with the Comodore 64, Commodore 128, GwBasic, QuickBasic, QB64, Atari, etc...

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