Intel 9800758-02 manual Generating a Boot-Loaded RMX/80 BASIC-80

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BASIC-80

RMX/80 BASIC-80

Drive 1: In drive I, you must have a disk with these modules:

The RMX/SO nucleus, factory-configured for an iSBC

SO/IO, SO/20,orSO/30.

The RMX/SO extension files, including the Disk File System, and the RMX/SO Boot Loader files for the appropriate CPU board.

Once these two disks are present in the proper drives, you can begin configuring your RMX/SO BASIC-SO version. We'll look at procedures and examples of two kinds of BASIC-SOs-a boot-loaded version and a PROM-based version.

Generating a Boot-Loaded RMX/80 BASIC-80

The software requirements for generating a boot loader and a compatible version of BASIC-SO are listed above. You must have the two disks in their proper drives with the given modules on each disk.

The hardware requirements for the boot loader and its accompanying version of BASIC-SO are:

An iSBC 201, iSBC 202, iSBC 204, or iSBC 206 Disk Controller, with its necessary cables, and the disk drives it controls.

An iSBC SO/IO, iSBC SO/IOA, iSBC SO/20, iSBC SO/20-4,or iSBC SO/30.

At least 4SK bytes of RAM if DFS is used, or 32K bytes of RAM if it is not used. If you use an iSBC SO/30, the 16K bytes of RAM on-board count toward the total. You can use any combination of iSBC RAM boards.

An RS-232C compatible terminal, and accompanying cables.

There are three steps to generating a boot loader for RMX/SO BASIC-SO:

1.You must examine and, if necessary, modify the BQOPS.ASM module.

2.You must also examine the BOOTCM and BQBMEM modules and modify them as needed.

3.After you have verified that the various assembly modules accurately reflect your hardware and software configurations, you SUBMIT the GBOOT.CSD module, shown in figure F-2, which assembles BOOTCM.ASM and BQBMEM.ASM and LINKs and LOCATEs the boot loader.

Modifying the BQOPS.ASM Module. The BQOPS.ASM module contains data used by the BOOTCM.ASM, BQBMEM.ASM, BASCM.ASM, and BQMEM. ASM modules. In most cases, this will be the only module you will modify before assembling modules for a new configuration. The boot loader configuration re- quirements are dependent upon the CPU model, the disk controller model, the number of disk drives available, and the highest memory location; if these do not change from configuration to configuration, then the boot loader need not be regenerated.

With the ISIS-II Text Editor or CREDIT, you can edit the BQOPS.ASM module listed in figure F-I to support your exact configuration. Refer to the ISIS-II User's Guide for an explanation of the Editor's features and capabilities.

F-5

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Contents BASIC-SO Reference Manual A108/0979/7500 FL Preface Page Contents Illustrations Invoking BASIC-80 Chapter Introduction to BASIC-80Introduction to BASIC-80 ExamplesBasic filename MEMTOPaddress FilenameRenaming a File Listing the Directory of a DiskChanging File Attributes Deleting a FileSave LP ,A You can now run, list, or edit the programStatements CommandsBASIC-80 Statements BASIC-80 Commands ContdBASIC-80 Functions BASIC-80 Statements ContdBASIC-80 Functions Contd Functions Representing DataInteger Constants ConstantsDecimal Integer Constants Hexadecimal Integer ConstantsSingle-Precision Floating-Point Constants Octal Integer ConstantsDouble-Precision Floating-Point Constants String Variables String ConstantsThis is a string constant $ = Enter next data stringYI,1 L4! = Csng l4String Arrays BASIC-SO Operators in Order of Precedence Contd Arithmetic OperatorsString Operator Logical OperatorsNumeric Expressions String ExpressionsEntering and Editing Programs 30 A=8 30 A=8*5230 A=8*52 30 A=8*37 30 A--=8xx*522537 Control-R a = 8*37Command 3D press 3, then D results SubcommandInteger D If AB thenIf AB then 120 Else Null SET At this point, the other editing subcommands may be used Syntax of the X subcommand isInteger C character character Print Undefined SET The E subcommand is enteredMove the cursor to PRINT. Enter 2C RE L Print Undefined SET. Enter a LSyntax Error Messages BASIC-80 Error MessagesOverflow, Underflow, and Divide-by-Zero Error Trapping Trace Facility Error Handling Error SimulationRestarting Program Execution If line 40 is replaced withOpen 1,#1,F1DATES Opening a Sequential FileWriting to a Sequential File Refer to for further details of Print UsingReading from a Sequential File If executed four times, it would read all eight valuesValue of R$ would be Closing a Sequential FileDefining a Random 1/0 Field-FIELD BuffersField #3, 20 AS N$ Field #3, 20 AS N$, 9 AS SS$ Disk File Input/OutputReading from a Random 1/0 File Opening and Closing a Random Disk FileAny of the parameters can be variables To read the next recordInteger Writing to a Random 1/0 FileSingle-precision value Double-precision valueMKI$ Attrib Fdrive numberfilename, WO Attrib Fdrive numberfilename, W1Auto first lineJ, increment Clear expression,addressClose Commands and StatementsRules for function name are the same as for variable name DEF FNXDefsng Defdbl Defstr Defint Delete DIMDIR ErrorEdit ENDExit Error expressionField FOR-NEXT-STEPGosub GETFor variable=expression to expression Step expression GET I file number ,record numberInput IF-THEN-ELSEGoto LET KillLine Input ListLoad LSET, RsetNEW Merge9 16 NextOn ... Goto On ... GosubOpen OUT Option BasePoke Print Print UsingString Fields If X$=SEVEN and Y$=EIGHT, the results of line 40 would be Numeric fieldsPUT PrunRead RandomizeREM Return ResumeRUN line numberlstring expression ,F SaveLine number RUN filename 60 END? 5,8,2 TRON, TroffWidth WaitATN ABSCint CHR$Functions CVI CVS Csng10 A# = 1.00/3.00 AO/o =EOF DskfOk· FIXINP HexsInputs Instr INTLEFT$ LOC LENLOF LOGMKI$ MKS$ MKD$ MID$OCT$ Peek expression RightsPOS integer RIGHT$ string,integerSIN SGNSpaces 10 a =1SPC integer SPCIf A$ = 2 then Print Correct Else Goto SQRexpressionTAB expression STR$ expressionTAN expression 60 AO/o = Here is an example of how the USRn statement is usedTable A-I. BASIC-80 Error Codes Appendix a BASIC-SO Error CodesTable A-I. BASIC-SO Error Codes Contd Appendix B BASIC-SO Reserved Words Page Level To halt program execution and return to commandTo tab across the line To resume program execution after it is stopped byPage Appendix D Ascii Codes Table D-l. Ascii Code ListBEL Table D-2. Ascii Code DefinitionAppendixe Calling Subroutines Figure B-1. Internal Representation of Numbers and Strings RESULT=USR%1VARPTRA, VARPTRB, VARPTRC» PRINTA+B+C= Result Some Real ExamplesFigure E-2 /8085 Assembly Language Program Figure E-3. PL/M-80 Program Appendix F RMX/SO BASIC-SO ISIS-II BASIC-SO Initializing the Predefined RMX/SO BASIC-SO ConfigurationOOOOH-OFFFH Table F-l. Sample Configuration Jumper WiringBASIC-80 Source Files Generating Boot-Loaded and PROM-Based VersionsBASIC-80 Object Files BASIC-80 Executable FilesGenerating a Boot-Loaded RMX/80 BASIC-80 This option is used to allocate memory. It is 1 if the boot That are not boot loadedSetting baud rates, refer to the RMX/SO Users Guide This option enables your user-written I/O drivers if youISBC 80/20-4 Generating a PROM-Based RMX/80 BASIC-80 Prom F1 RMX820.L1BSTART, & FOBASCM.OBJ,& FORMXBAS.LlB F1 DFSDIR. L1BDIRECTORY ,RENAM E,& F1 MTI810.L1B Adding BASIC-SO to an Existing RMX/SO Configuration Configuring DFS on an iSBC 80/10Configuration Requirements ISBC SO/10 System ClockPublic Variables Open 0,#1, L1LlST Adding User-Written I/O Drivers to RMX/SO BASIC-SOFigure F-S. Sample User-Written 1/0 Driver Routine Burning a BASIC-80 Program Into Prom Altering BASIC-80 WorkspaceBaprom F1HEATER.BAS Page Index Ase BASIC-80 RIGHT$,7-1O Request for Readerscomments 111111
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