Remote-processing BASIC 52 Manuale Utente

RPBASIC-52 PROGRAMMING GUIDEiCOPYRIGHTCopyright 1996 - R emote Proc essing Corporation. All rights reserved.The software described in this manual is

RPBASIC-52 PROGRAMMING GUIDE1-7HARDWARE AND SOFTWAREINTERRUPTSRPBASIC52 generates two kinds of interrupts: hardware and software. Hardware types are

RPBASIC-52 PROGRAMMING GUIDE2-81PEEK$Syntax: $(n) = PEEK$(segment,address)Where: segment = 0 to 7, specifies a 64K segmentaddress = 0 to 65535, starti

RPBASIC-52 PROGRAMMING GUIDE2-82PISyntax: PIFunction: Stored constant 3.1415926Mode: Command, runUse: PRINT PICards: AllDESCRIPTIONPI is closer to 3.1

RPBASIC-52 PROGRAMMING GUIDE2-83POKEBSyntax: POKEB segmen t,address,d ataWhere: segment = 0 to 7, specifies a 64K segmentaddress = 0 to 65535, specif

RPBASIC-52 PROGRAMMING GUIDE2-84POKEFSyntax: POKEF segmen t,address,d ataWhere: segment = 0 to 7, specifies the 64K segmentaddress = 0 to 65535, loca

RPBASIC-52 PROGRAMMING GUIDE2-85POKEWSyntax: POKEW segmen t,address,d ataWhere: segment = 0 to 7, specifies the 64K segmentaddress = 0 to 65535, loca

RPBASIC-52 PROGRAMMING GUIDE2-86POKE$Syntax: POKE$ segment,address,stringWhere: segment = 0 to 7, specifies the 64K segmentaddress = 0 to 65535, loc

RPBASIC-52 PROGRAMMING GUIDE2-87POPSyntax: POP variable [ ,variable,...]Function: Takes a valu e PU SHed to a sta ck and assigns it to the variable.

RPBASIC-52 PROGRAMMING GUIDE2-88PH0.PH1.Syntax: PH0. exprPH1. exprWhere: expr = any mathematical expressionFunction: Print in hexadecimal format fol

RPBASIC-52 PROGRAMMING GUIDE2-89PRINTPRINT #,P.?Syntax: PRINT expr P. expr? exprPRINT#port,exprP.#port,expr?#port,exprWhere: expr = any string, math

RPBASIC-52 PROGRAMMING GUIDE2-90PUSHSyntax: PUSH expr1 [,expr2,...]Where: expr is a numeric valueFunction: Puts the value of expr to the argument sta

RPBASIC-52 PROGRAMMING GUIDE1-8MULTITASKING CONSTRUCTSCOUNT M ultitaskingRPBASIC-52 on the RPC-3XX series of cards cancount pulses while a program is

RPBASIC-52 PROGRAMMING GUIDE2-91PWMSyntax: PWM line, ltime,htime[,cycles]Where: line = 0 to 8 or 100 to 123. This is card dependent. Refer to yo ur

RPBASIC-52 PROGRAMMING GUIDE2-92READSyntax: READ variable [,variable , ...]Function: Sequentially assigns the values of data provided in the DATA sta

RPBASIC-52 PROGRAMMING GUIDE2-93REMSyntax: REM any ASCII textFunction: Allows remarks in a program or on command lineMode: Command, runUse: 100 REM Yo

RPBASIC-52 PROGRAMMING GUIDE2-94RESTORESyntax: RESTOREFunction: Resets the READ instruction pointer to the beginning of the D ATA list.Mode: RunUse:

RPBASIC-52 PROGRAMMING GUIDE2-95RETISyntax: RETIFunction: Return from ONITR or ONTICK interrupt. RETI must be the last instruction of the interruptsu

RPBASIC-52 PROGRAMMING GUIDE2-96RETURNSyntax: RETURNFunction: Returns program to next instruction following a GOSUB command or software interrupt (ON

RPBASIC-52 PROGRAMMING GUIDE2-97RNDSyntax: RNDFunction: Returns a pseudo-random fractional number between zero and one inclusive.Mode: Command, runUse

RPBASIC-52 PROGRAMMING GUIDE2-98SAVESyntax: SAVE [segme nt]Where: segment = 0 up to 7Function: Save program to flash EPROM.Mode: Comm andUse: SAVE 1Ca

RPBASIC-52 PROGRAMMING GUIDE2-99SGNSyntax: SGN(expr)Function: Returns +1 if expr is greater than zero, zero if the expr equals zero, and -1 if expr is

RPBASIC-52 PROGRAMMING GUIDE2-100SINSyntax: SIN(expr)Function: Returns the trigonometric S INE of expr which is assum ed to be in radians. The value

RPBASIC-52 PROGRAMMING GUIDE1-9There are many communication protocols. For thisexample, the protocol looks something like this:>03MB1The protocol

RPBASIC-52 PROGRAMMING GUIDE2-101SPCSyntax: PRINT SPC(expr)Where: expr = number of spaces to printFunction: Sends expr number of space charac ters (20

RPBASIC-52 PROGRAMMING GUIDE2-102STOPSyntax: STOPFunction: Breaks program execution; resume with the CONT command.Mode: RunUse: STOPCards: AllDESCRIPT

RPBASIC-52 PROGRAMMING GUIDE2-103STRSyntax: A = STR(function,$(n)[,$(n)]))Where: function = 0 to 14, specifies string function to perform as described

RPBASIC-52 PROGRAMMING GUIDE2-104Syntax: A = STR(3,$(n))Description:Returns num bers in a string as a real number. Sim ilar to V AL i n othe r Basi

RPBASIC-52 PROGRAMMING GUIDE2-105Syntax: A = STR(7,$(put),$(get),position,length )Description:Extracts a portion of a string from $(get) and transfers

RPBASIC-52 PROGRAMMING GUIDE2-106Syntax: A = STR(10,$(n),format,va riable)Description:Converts and formats variable into a string and puts it into $(n

RPBASIC-52 PROGRAMMING GUIDE2-107STRINGSyntax: STRING total bytes,string lengthWhere: total bytes = total num ber of bytes in m emory to allocatestrin

RPBASIC-52 PROGRAMMING GUIDE2-108SQRSyntax: SQR(expr)Where: expr is any valid mathematical expression, number, or variable greater than 0 Function: Re

RPBASIC-52 PROGRAMMING GUIDE2-109ST@Syntax: ST@ exprWhere: expr = 0 to 65535Function: Takes a floating-point number from the argument stack and stores

RPBASIC-52 PROGRAMMING GUIDE2-110TABSyntax: PRINT TAB(position)Where: position = 1 to 255 Function: Specifies a column number at to begin printing.Mod

RPBASIC-52 PROGRAMMING GUIDE1-10processed unless the host "knows" this node has justreset. Any valid command, unless it is "E", r

RPBASIC-52 PROGRAMMING GUIDE2-111TANSyntax: TAN(expr)Function: Returns the trigonometric tan gent (sin/cos) of expr which is assu med to be in radian

RPBASIC-52 PROGRAMMING GUIDE2-112TICKSyntax: TICK(timer)Where: timer = 0 to 3. It specifies the tim er numbe r.Function: Returns a time from one of 4

RPBASIC-52 PROGRAMMING GUIDE2-113TIME (function)Syntax: A = TIME(n)Where: n = 0 to 40 = hours1 = minutes2 = seconds3 = hundredths of a second4 = secon

RPBASIC-52 PROGRAMMING GUIDE2-114TIME (command)Syntax: TIME hours,minutes,secondsWhere: hours = 0 to 23minutes = 0 to 59seconds = 0 to 59Function: Set

RPBASIC-52 PROGRAMMING GUIDE2-115UI0UI1Syntax: UInWhere: n = 0 or 1, is the serial port numberFunction: Directs serial input to COM 0 or COM 1 when u

RPBASIC-52 PROGRAMMING GUIDE2-116UO0UO1Syntax: UOnWhere: n = 0 or 1, is the serial port numberFunction: Directs PRINT output to COM 0 or COM 1 seria

RPBASIC-52 PROGRAMMING GUIDE2-117USINGU.Syntax: PRINT USING (format)PRIN T U.(format)Where: formatUSING(Fn) n is the number of significant digits. A

RPBASIC-52 PROGRAMMING GUIDE2-118WDOGSyntax: WDOG [time]Where: time = 0, 1, or 2no parameter = toggle watchdog timer0 = turn off watch dog timer1 = s

RPBASIC-52 PROGRAMMING GUIDE2-119XBYSyntax: XBY(addr)XBY( addr)=exprWhere: addr = 0 to 65535 (0FFFFH) is a memory addressexpr = 0 to 255 is data to sa

RPBASIC-52 PROGRAMMING GUIDE2-120CONFIG COMMANDSCONFIG comman ds configure various I/O to u ser defined p aram eters. All CONFIG com mands are uniqu

RPBASIC-52 PROGRAMMING GUIDE1-11 0 Wait for "RING" message. Modemauto answers. 1 Look for "CONNE CT". 2 Get password. If inva

RPBASIC-52 PROGRAMMING GUIDE2-121CONFIG BAUDSyntax: CONFIG BAUD 0,baudCONFIG BAUD 1,baud,rs-485Where: baud = Baud rate number. See tables below.rs-48

RPBASIC-52 PROGRAMMING GUIDE2-122CONFIG DISPLAYSyntax: CONFIG DISPLAY typeWhere: type = 0 to 3, defines the display type0 = LCD 4 x 40 character1 = LC

RPBASIC-52 PROGRAMMING GUIDE2-123CONFIG FREQSyntax: CONFIG FREQ channel,intervalWhere: channel = counter num ber, 0 or 1interval = number of 5 milli-s

RPBASIC-52 PROGRAMMING GUIDE2-124CONFIG LINESyntax: CONFIG LINE 0,configu ration 0,p ort CCONFIG LINE 100,configu ration 1,p ort A,port B,port CWhere:

RPBASIC-52 PROGRAMMING GUIDE2-125configuration 1 Port A Port B Upper C Lower C0 Output Output Output Output1 Output Output Output Input2 Output Input

RPBASIC-52 PROGRAMMING GUIDEA-1APPENDIX A - Network example programFile: NET3XX.BASrem RPC-3xx networkingrem Uses COM1 as network portrem To use com p

RPBASIC-52 PROGRAMMING GUIDEA-2rem 130 CONFIG BAUD 1,1,2rem set the display type for command D140 config display 1rem Read lines 0-3 to determine card

RPBASIC-52 PROGRAMMING GUIDEA-3rem if last two digits don't sum to message, then return a negativerem acknowledge error and bail out1170 if oc &l

RPBASIC-52 PROGRAMMING GUIDEA-41700 $(2) = "A"1710 GOTO 1510 rem Bad data1750 $(2) = "N4"1760 goto 1510REM set a line according

RPBASIC-52 PROGRAMMING GUIDEA-53030 oc = str(10,$(2),0,oc)rem Force letter A to first spot. This is a space as set by format above3040 asc($(2),1) =

RPBASIC-52 PROGRAMMING GUIDE1-12watchdog timer may be nec essary to restart the ca rd. Make sure call waiting is disabled.ON LINE MultitaskingON LINE

RPBASIC-52 PROGRAMMING GUIDEB-1APPENDIX B - Modem example programFile: MODEM.BASrem Modem communication programrem Based around BASIC-52 software for

RPBASIC-52 PROGRAMMING GUIDEB-2rem password. Enter 'password'. Use lower case. The password isrem set at line 2300.rem You are then promp

RPBASIC-52 PROGRAMMING GUIDEB-320 string 1000,50:rem 20 strings, 50 bytes30 dim flag(15) :rem flags for main task dispatcher40 okflg = 0 :rem OK recei

RPBASIC-52 PROGRAMMING GUIDEB-4rem 2 = looking for password. If ok send log on. If not, tell user 1500rem 3 = looking for command. If ok, set MCYCL

RPBASIC-52 PROGRAMMING GUIDEB-51685 print : print "Sent +++"1690 returnrem look for OKrem If have it, send hang uprem If not, set flag (nokf

RPBASIC-52 PROGRAMMING GUIDEB-6rem ON COM$ processingrem get current input2000 $(0) = com$(1)2010 atim = 0 : rem if anything came in, reset actual com

RPBASIC-52 PROGRAMMING GUIDEB-72240 cycle =4rem DEBUG2255 print "No CONNECT received. Input string=",$(0)2260 returnrem hold off any xmiss

RPBASIC-52 PROGRAMMING GUIDEB-8rem cycle 4rem Look for OKrem If have OK, then reset cycle to 0rem If message is not OK, simply leave2500 $(1) = "

RPBASIC-52 PROGRAMMING GUIDEC-1APPENDIX C- ERROR MESSAGESThe RPB ASIC-52 error processor helps identify errors.When running a program , error messages

RPBASIC-52 PROGRAMMING GUIDEC-2This exam ple produces an expected error:?le-100/le28ERROR: ARITH. UNDERFLOWREADYThis exam ple produces an incorrect ex

RPBASIC-52 PROGRAMMING GUIDE1-13OPERATORSOperator categories include:Arithmetic =, +, *, /, **, SQRRelational =, <>, <, >, <=, >=Log

RPBASIC-52 PROGRAMMING GUIDEC-3I-STACKThere is not enough internal stack space to evaluate an expression. Usually this is caused by an excessive numb

RPBASIC-52 PROGRAMMING GUIDED-1APPENDIX D - Data storageSTRING STORAGEBASIC-52 stores string variables between MTOP and top of variable space, call VA

RPBASIC-52 PROGRAMMING GUIDEE-1APPENDIX E - Software revision history;V1.02 added; 24 key keypad scanning; Took out BELL when backspacing beyond begin

RPBASIC-52 PROGRAMMING GUIDEE-2V1.13 01/12/96Added code to support IEE centry series display (3602-100-05420)Includes CONFIG DISPLAY 4Added PRINT #por

RPBASIC-52 PROGRAMMING GUIDE1-14Some com mands have been added to or otherwiseenhanced:IDLEINPUTPWMThe followin g com mands are n ew to BASIC-52. Not

RPBASIC-52 PROGRAMMING GUIDE1-15Data storage and retrievalBLOADBSAVECBYDBYDATADIMPOKEPEEKREADRESTOREXBYOperators/-+***<<=<>=>>=ABSAN

RPBASIC-52 PROGRAMMING GUIDE1-16String operationASCCHRSTRSTRINGStrings in RPBASIC-52 are one-dimensional arraysof characters. Strings are stored as a

RPBASIC-52 PROGRAMMING GUIDEiiTABLE OF CONTENTSPREFACE ... 1MANUAL CONVENTIONS ... 1Symbols and Terminology ...

RPBASIC-52 PROGRAMMING GUIDE2-1ABSSyntax: ABS(expr)Where: expr = any number in Basic's rangeFunction: Returns the absolute value of an expression

RPBASIC-52 PROGRAMMING GUIDE2-2AINSyntax: AIN(channel)Where: channel = 0 to 7, is channel to convert.Function: Converts analog input to digital number

RPBASIC-52 PROGRAMMING GUIDE2-3ASCSyntax: ASC(ASCII character)ASC(string,position expr)Where: ASCII character = number from 0 to 255string = any valid

RPBASIC-52 PROGRAMMING GUIDE2-4ATNSyntax: ATN(expr)Where: expr = value betw een 0 and PI/2Function: Returns a trigonometric arc-tangent of expr. Retu

RPBASIC-52 PROGRAMMING GUIDE2-5BLOADSyntax: BLOAD to RAM segmen t, RAM address, fro m EP ROM segmen t, EPRO M add ress, lengthWhere: to RAM segment

RPBASIC-52 PROGRAMMING GUIDE2-6BSAVESyntax: BSAVE to ROM segmen t,ROM address,fro m RA M segm ent, RAM address, len gthWhere: ROM segment = 0 to 7,

RPBASIC-52 PROGRAMMING GUIDE2-7many sectors, the last written sector is filled in with more data from R AM. Note that BL OAD allows dataretrieval of

RPBASIC-52 PROGRAMMING GUIDE2-8CALLSyntax: CALL addressWhere: address = address of assembly language program from 0 to 65535Function: Calls an assembl

RPBASIC-52 PROGRAMMING GUIDE2-9CARD$Syntax: CARD$(expr)Where: expr = 0 to 3, is the card reader to scan.Function: Checks card reader for data. If pr

RPBASIC-52 PROGRAMMING GUIDE2-10NOTE: This command takes approximately 27 ms to process. This is because the reader sends a bit ofinformation every 1

RPBASIC-52 PROGRAMMING GUIDEiiiON LINE ... 73ONTICK ... 75PEEKB ... 76PEE

RPBASIC-52 PROGRAMMING GUIDE2-11CBYSyntax: CBY(expr)Where: expr = address from 0 to 65535Function: Reads internal program codeMode: Command, runUse: P

RPBASIC-52 PROGRAMMING GUIDE2-12CHRSyntax: CHR(expr)CHR( string, positi on)Where: expr = number from 0 to 255string = string variableposition = 1 to l

RPBASIC-52 PROGRAMMING GUIDE2-13CLEARCLEAR SSyntax: CLEARCLEAR SFunction: Sets variables to zero, clears stacksMode: Command, runUse: CLEARCLEAR SCard

RPBASIC-52 PROGRAMMING GUIDE2-14The above e xample sho ws that ONTICK con tinues to run after a C LEA R stateme nt but variable s are cleared. If a pr

RPBASIC-52 PROGRAMMING GUIDE2-15CLEAR COMSyntax: CLEAR COM(port)Where: port = 0 or 1, the serial com mun ication port. port may be la rger. Check y

RPBASIC-52 PROGRAMMING GUIDE2-16CLEAR DISPLAYSyntax: CLEAR DISPLAY Clears character and, if available, graphics displays.CLEAR DISPLAY LINE Clears cha

RPBASIC-52 PROGRAMMING GUIDE2-17CLEAR TICKCLEAR KEYPADSyntax: CLEAR TICK(timer)Where: timer = 0 to 3CLEAR KEYPADFunction: Resets specified tick timer

RPBASIC-52 PROGRAMMING GUIDE2-18COMSyntax: COM(port)Where: port = 0 or 1, the serial com munication port. port may be larger. Check your hardwareman

RPBASIC-52 PROGRAMMING GUIDE2-19COM$Syntax: $(n) = COM$(port)Where: port = 0 or 1, the serial com munication port. port may be larger. Check your ha

RPBASIC-52 PROGRAMMING GUIDE2-20CONTSyntax: CONTFunction: Continue program ex ecution after a ST OP or Comm and-CMode: CommandUse: CONTCards: AllDESCR

RPBASIC-52 PROGRAMMING GUIDE1-1PREFACEThis programming guide is for Remote Processingcontrollers using RPBASIC-52 language. It wasderived from Intel

RPBASIC-52 PROGRAMMING GUIDE2-21COSSyntax: COS(expr)Where: expr = numeric value up to ±200,000Function: Returns the trigonometric co sine of expr whic

RPBASIC-52 PROGRAMMING GUIDE2-22CRSyntax: PRINT CR,Function: Used with P RIN T. Sends a carriage return w ithout a line feed. Mode: Command, runUse

RPBASIC-52 PROGRAMMING GUIDE2-23COUNT (statement)Syntax: COUNT counter ,dataWhere: counter = 0 or 1data = 0 to 16777215Function: Writes data to spec

RPBASIC-52 PROGRAMMING GUIDE2-24COUNT (function)Syntax: A = COUNT(counter)Where: counter = 0 - 1, or 4 - 11Function: Reads a multimode hardware or sof

RPBASIC-52 PROGRAMMING GUIDE2-25DATASyntax: DATA expr [,expr,...]Where: expr = numeric data.Function: It is an expression list used by READ.Mode: Run

RPBASIC-52 PROGRAMMING GUIDE2-26DATE (function)Syntax: A = DATE(n)Where: n = 0 to 30 = year (last two digits)1 = month2 = day3 = day of weekFunction:

RPBASIC-52 PROGRAMMING GUIDE2-27DATE (statement)Syntax: DATE year,month,day[,day of week]Where: year = 0 to 99month = 1 to 12day = 1 to 31day of week

RPBASIC-52 PROGRAMMING GUIDE2-28DBYSyntax: A=DBY(expr) DBY(expr)=variableWhere: expr = 0 to 255variable = 0 to 255Function: Read/write internal data

RPBASIC-52 PROGRAMMING GUIDE2-29DIMSyntax: DIM name(size)[,name(size)...]Where: name = Any valid variable namesize = 1 to 255 elem entsFunction: Reser

RPBASIC-52 PROGRAMMING GUIDE2-30DISPLAYSyntax: DISPLAY option[,option][,option]Where: option is one or more of the following"string" Print

RPBASIC-52 PROGRAMMING GUIDE1-2Basic InterpretersThere are several ty pes and levels of inte rpreters. Aslow, very basic type of interpreter figures

RPBASIC-52 PROGRAMMING GUIDE2-31(row,col,[,cursor]) positions the cursor and, optionally, turns it ON or OFF. This option affects the charactercursor

RPBASIC-52 PROGRAMMING GUIDE2-32DISPLAY OFF Turns off both character and graphics displays.DISPLAY OFF G Turns off graphic display only.DISPLAY OFF C

RPBASIC-52 PROGRAMMING GUIDE2-33DO-UNTILSyntax: DO {program statements} UNTIL relational exprWhere: relational expr is any logical evaluation such as

RPBASIC-52 PROGRAMMING GUIDE2-34DO-WHILESyntax: DO{program statements}WHILE {relational expr}Function: Executes {program statements} w hile {relationa

RPBASIC-52 PROGRAMMING GUIDE2-35ENDSyntax: ENDFunction: Terminates program execution and returns to command mode.Mode: RunUse: 65000 ENDCards: AllDESC

RPBASIC-52 PROGRAMMING GUIDE2-36EXECUTESyntax: EXECUTE [segme nt]Where: segment = program to execute Function: Loads and runs program specified by

RPBASIC-52 PROGRAMMING GUIDE2-37EXPSyntax: EXP(expr)Function: Raises "e" (2.71828) to the power of exprMode: Command, runUse: PRINT EXP(C OS

RPBASIC-52 PROGRAMMING GUIDE2-38FOR-TO-STEP-NEXTSyntax: FOR variable = initial index expr TO index limit expr [STEP step expr ]progra m statem entsNEX

RPBASIC-52 PROGRAMMING GUIDE2-39EXAMPLEThe following example gets characters from the receive buffer and generates a checksum. A string of 10characte

RPBASIC-52 PROGRAMMING GUIDE2-40FREESyntax: FREEFunction: Returns the bytes of available in program RAMMode: Command, runUse: PRINT FREECards: AllDESC

RPBASIC-52 PROGRAMMING GUIDE1-3else (laptop or main frame) is sending it c harac ters. The upload and download file does not contain anyspecial codes;

RPBASIC-52 PROGRAMMING GUIDE2-41FREQ (Function)Syntax: FREQ(channel)Where: channel = 0 or 1, depending upon card.Function: Returns a counter valueMod

RPBASIC-52 PROGRAMMING GUIDE2-42BAD DATA When channel is out of range for a card.EXAMPLEThe following example sets up frequency multitaskin g and prin

RPBASIC-52 PROGRAMMING GUIDE2-43GETSyntax: A = GETFunction: Gets character from buffer.Mode: RunUse: A = GETCards: AllDESCRIPTIONGET is similar to INK

RPBASIC-52 PROGRAMMING GUIDE2-44GOSUBSyntax: GOSUB line number...line number program statementsRETURNFunction: Transfers program control to the specif

RPBASIC-52 PROGRAMMING GUIDE2-45GOTOSyntax: GOTO line numberFunction: Routes program execution to line numberMode: Command, runUse: GOTO 100Cards: Al

RPBASIC-52 PROGRAMMING GUIDE2-46IDLESyntax: IDLE [option]Where: option specifies a card dependent mode.Function: Suspends program execution and w aits

RPBASIC-52 PROGRAMMING GUIDE2-47IF THEN ELSESyntax: IF expr [ THEN ] statement(s) [ ELSE statement(s)]Where: expr = any logical evaluation or variabl

RPBASIC-52 PROGRAMMING GUIDE2-48INPUTSyntax: INPUT ["prompt text"] [,] [,variable ...]Where: prompt text = optional textvariable = list of

RPBASIC-52 PROGRAMMING GUIDE2-49INTSyntax: INT(expr)Function: Returns an integer portion of exprMode: Command, runUse: PRINT INT(PI)Cards: AllDESCRIPT

RPBASIC-52 PROGRAMMING GUIDE2-50KEYPADSyntax: A = KEYPAD(function)Where: function = 0 or 10 = return keypad position pressed from buffer1 = returns nu

RPBASIC-52 PROGRAMMING GUIDE1-4Variables and Con stantsMore than 25,000 unique variable or constant namesmay be defined. Names may be up to eightchar

RPBASIC-52 PROGRAMMING GUIDE2-51LD@Syntax: LD@ exprWhere: expr = valid integer address of 00H through 0FFFFH (65535)Function: Retrieves a floating-poi

RPBASIC-52 PROGRAMMING GUIDE2-52LENSyntax: LENFunction: Returns length of the current program in RAMMode: Comm andUse: PRINT LENCards: AllDESCRIPTIONT

RPBASIC-52 PROGRAMMING GUIDE2-53LINE (Function)Syntax: A = LINE(line)Where: line = 0-9 o r 100 to 123 (L ine ranges m ay vary. Check you r hardw are

RPBASIC-52 PROGRAMMING GUIDE2-54LINE# (Function)Syntax: A = LINE#(line)Where: line = connecto r number from 101 to 125 (Line ranges m ay vary. Check

RPBASIC-52 PROGRAMMING GUIDE2-55LINEB (Function)Syntax: A = LINEB(i/o bank,add ress)Where: i/o bank = 0 to 7. Specific functions are card de pendent.

RPBASIC-52 PROGRAMMING GUIDE2-56LINE (Statement)Syntax: LINE line,dataWhere: line = 0 to 8 or 100 to 123 (L ine ran ges may vary. Che ck your hardw

RPBASIC-52 PROGRAMMING GUIDE2-57LINE# (Statement)Syntax: LINE# line,dataWhere: line = 101 to 125, is the digital I/O line connector number. (Line ran

RPBASIC-52 PROGRAMMING GUIDE2-58LINEB (Statement)Syntax: LINEB i/o bank,a ddress,da taWhere: i/o bank = 0 to 7. Specific functions are card de penden

RPBASIC-52 PROGRAMMING GUIDE2-59LISTSyntax: LISTLIST line numberLIST line number - line numberWhere: line number is a program line numberFunction: Pri

RPBASIC-52 PROGRAMMING GUIDE2-60LIST#Syntax: LIST# portLIST# port,line numberLIST# port,line number-line numberWhere: port = 0 or 1 or number of ser

RPBASIC-52 PROGRAMMING GUIDE1-5RPBASIC-52 Memory Mapsubroutines is limited to the amount of internal stackspace. Usually this is about 35 subroutines

RPBASIC-52 PROGRAMMING GUIDE2-61LOADSyntax: LOAD [segme nt]Where: segment = 0 to 7, see table below.Function: Loads a program from EPROMMode: Comm an

RPBASIC-52 PROGRAMMING GUIDE2-62LOGSyntax: LOG (expr)Function: Returns the natural logarithm (base "e") of expr which must evaluate to grea

RPBASIC-52 PROGRAMMING GUIDE2-63MTOPSyntax: MTOPMTOP = last valid RAM addressFunction: Reads or assigns the top of external data memory which will be

RPBASIC-52 PROGRAMMING GUIDE2-64NEWSyntax: NEWFunction Erases current program in RAM. All variables and strings are cleared.Mode: CommandUse: NEWCard

RPBASIC-52 PROGRAMMING GUIDE2-65NULLSyntax: NULL integerWhere: integer = 0 -255Function: Sets number of NULL cha racters output to user after a carr

RPBASIC-52 PROGRAMMING GUIDE2-66ON COM$Syntax: ON COM$port,length,terminator,program lineON COM$portWhere: port = the com port number 0 or 1length = n

RPBASIC-52 PROGRAMMING GUIDE2-67ON COUNTSyntax: ON COUNT number, line number, count, program lineON COUNT number, line numberON COUNT numberWhere: num

RPBASIC-52 PROGRAMMING GUIDE2-6810 ON COUNT 10,320 ONTICK 1,100030 GOTO 30...1000 PRINT COUNT(10)1010 RETURN

RPBASIC-52 PROGRAMMING GUIDE2-69ONERRSyntax: ONERR line numberFunction: Goes to line number on arithmetic error, b ad argument, and hardw are errors.

RPBASIC-52 PROGRAMMING GUIDE2-70ON GOSUBSyntax: ON expr GOSUB line0[,line1[,line2...]]Where: expr = 0 to number of subroutines after GOSUBlinen = subr

RPBASIC-52 PROGRAMMING GUIDE1-6OPERATING MODESCommand and Run M odesRPBASIC-52 operates in two modes, Command andRun. Command mode is the direct, int

RPBASIC-52 PROGRAMMING GUIDE2-71ON GOTOSyntax: ON expr GOTO line0[,line1[line2...]]Function: Branches to a program line based on expr value.valuate to

RPBASIC-52 PROGRAMMING GUIDE2-72ONITRSyntax: ONITR number,line numberONITR numberONITR line numberONITRWhere: number = interrupt line. This is card d

RPBASIC-52 PROGRAMMING GUIDE2-73EXAMPLEThe following example responds to an external interrupt on the RPC-330.10 ONITR 1,1000 Declare interrupt.. O

RPBASIC-52 PROGRAMMING GUIDE2-74ON KEYPADSyntax: ON KEYPAD subroutine lineON KEYPADWhere: subroutine line = program to executeFunction: Branches to a

RPBASIC-52 PROGRAMMING GUIDE2-75ON LINESyntax: ON LINE number,I/O line,subroutine lineON LINE numberON LINE ON/OFF [,CLEAR]Where: number = 0 to 7, is

RPBASIC-52 PROGRAMMING GUIDE2-76The overall speed of RPBASIC-52 slows down by about 3% when all ON LINE tasks are enabled.Review HARDWAR E AND SOFTWAR

RPBASIC-52 PROGRAMMING GUIDE2-77ONTICKSyntax: ONTICK time,line numberWhere: time = time interval from 0.01 to 327line number = line to branchFunction:

RPBASIC-52 PROGRAMMING GUIDE2-78PEEKBSyntax: PEEKB(segment,ad dress)Where: segment = 0 to 7, specifies a 64K segmentaddress = 0 to 65535, byte addres

RPBASIC-52 PROGRAMMING GUIDE2-79PEEKFSyntax: PEEKF(segment,ad dress)Where: segment = 0 to 7, specifies a 64K segmentaddress = 0 to 65535, byte addres

RPBASIC-52 PROGRAMMING GUIDE2-80PEEKWSyntax: PEEKW(segment,address)Where: segment = 0 to 7, specifies a 64K segment.address = 0 to 65535, w ord addres