Amstrad DDI-1 manual Dr.Logo

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Dr.Logo:

Digital Research's version of Logo, a programming language with a graphics turtle.

Edit:

To correct or make changes to data, a program or text.

Expression:

In Dr. Logo an expression consists of a procedure name followed by any necessary inputs to the procedure.

File:

A collection of data, generally stored on cassette or disc.

Filename:

The name of a file. In Dr. Logo a file name can consist of up to 8 alphabetic or numeric characters. In CP/M an additional three character file type, preceeded by a dot . is allowed.

Hexfile:

An ASCII representation of a command or machine code file.

Integer:

A whole number with no decimal point.

Interface:

An object that allows two independent systems, such as a CPC464 and a disc drive, to communicate with each other.

Logical device:

The representation of a device that may be different to its physical form. For example the CP/M logical device LIST may be assigned to the Centronics port or perhaps the VDU.

Logo:

The name of a programming language derived from the Greek word logos, which means word. Logo is designed to teach the fundamentals of computer programming.

Node:

A unit of storage in the Logo workspace. Typically one node consumes 4 bytes of memory space.

Appendix 1. 3

AMSTRAD Disc Drive & Interface DDI-1 Manual

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Contents Page Amstrad Disc Drive & Interface DDI-1 Amstrad Contents Contents Page Connecting the Mains Lead Foundations 1 Setting UpConnecting the DDI-1 to the Computer Computer Interface Unit Main Disc Drive Drive a Computer Write Protection Foundations 2 About DiscsOpen Closed When Your Disc Is Eject Button Indicator LampFoundations Loading Software/Games Drive a disc missing Retry, Ignore or Cancel?Run rolcave ROLCAVE. not foundSyntax error Bad commandDrive a read fail Retry, Ignore or Cancel? Type mismatchFoundations Introducing Amsdos and CP/M Load filename Drive B disc missing Retry, Ignore or CancelDisc Tape.inFirst Steps Using The CP/M Disc Storing Data Onto DiscCpm CLS? Back to Amsdos BewareSaving a Program in Memory onto Disc Catalog Loading From DiscEXAMPLE.BAS Copying Programs From Disc to Disc Copying Programs From Cassette to DiscCopying Programs From Disc to Cassette Copying Using Disccopy Copying Using the CP/M System DiscCopying started Reading track 0 to Copying Using CopydiscWriting track 0 to Do you want to copy another disc Y/NAborting Checking DiscsDiscchk ChkdiscInstallation Amstrad Disc Drive & Interface DDI-1 Manual Making Working Discs Backup Master DiscBasic only disc Working SYSTEM/UTILITY discTurnkey Amstrad Basic discs DISCCOPY.COMTurnkey CP/M Discs Turnkey Basic using disc suppliedTurnkey Basic onto your Working disc Creating a Turnkey CP/M System discConfiguring a CP/M Program Configuring the Output from the packageAmbiguous filename Confirm individual files Y/N ? Configuring the Input to the package Starting a Turnkey CP/M PackagePayroll Autostarting a Turnkey CP/M Package Introduction Amsdos PrimerDisc Directory Amsdos filenames and filetypesConstruction of Filenames Amsdos headers Filenames on two drivesSave PROG.BAS a Save Bprog .BAS Wild cards Examples of Using Amsdos Commands in a programSaving variables and performing a Screen Dump BERT.BAS FRED1.BAS FRED2.BAS FRED3.BAK FRED3.BAS FINISH.BASCloseout NeatPre-empting a Garbage Collection Reference guide to Amsdos commandsWhile not EOF Wend CloseinSummary of Amsdos external commands Summary of Basic commandsSave OPENOUT, Print #9, Write #9, List #9, Closeout CATDIR CPMDisc DISC.INREN ERATape TAPE.INCopying Files File Copying proceduresAmsdos files with headers Ascii filesFile has a header Amstrad Reference guide to Amsdos Error Messages Drive Drive disc is write protected Drive Drive disc missingDrive Drive read fail Drive Drive write failCP/M Primer Operating with CP/MCP/M system tracks Configuration Sector Console control codesLogging in a disc Switching default drives Direct Console CommandsDIR command ERA commandREN command Transient commandsType command Peripheral ManagementSingle file copying File and disc copyingWhole disc copiers and checkers Cassette filesStat System ManagementDo you want to update your system disc Y/N SetupStat SECRET.BAS $DIR Is this correct Y/NAmsdos Disc GenerationFormat Format D Format I FormatAdvanced programming BootgenMovcpm SysgenAmstrad Disc Drive & Interface DDI-1 Manual Introduction to Logo What is LogoGetting Started Dr. LogoRepeat 4 fd 60 rt Procedures with parametersTo square Repeat 4 fd 60 rt 90 end To squareanysize side repeat 4 fd side rt 90 endEditing programs and procedures Using Variables to remember valuesCs squareanysize 100 rt 45 squareanysize To triangle Repeat 3 fd edge rt 120 endSummary of Dr. Logo primitives Operating hintsAscii Word and List ProcessingChar CountFirst EmptypFput ListArithmetic Operations Logical Operations ?= Logo Logo NotVariables ProceduresText Screen EditingSetsplit ShowGraphic Screen CleanType DotPal SetpalWindow Wrap Turtle GraphicsSetpc SethSetpos Workspace ManagementErn NodesGlist RecycleGprop PlistLoad Disc Files DirSave KEYBOARD, Joystick buttonp?paddle 0 Paddle?make key rc ?keyEnv SoundEnt ReleaseRepeat LabelRun StopCatch ErrorPause ThrowSystem Properties Headers Technical information for the user FirmwareStore requirements Changing DiscsError Messages Bios messagesAmsdos messages Failed to load boot sector Common to ALL Formats Disc OrganisationJump Block Interception by Amsdos Jump Block Re-Interception by the UserReturn Parameters Intercepted Firmware Calls 132 #BC8C 133 #BC8F 134 #BC92 135 #BC95 #BC98137 #BC9B Page Appendix Glossary of Terms CP/M Dr.Logo Primitives TPA Amstrad Disc Drive & Interface DDI-1 Manual Appendix Term Limitations of Remedies Amstrad Disc Drive & Interface DDI-1 Manual Appendix Index ERA Setpos