UBI EasyCoder 301 User Manual

Contents

UBI EasyCoder 301 User Manual Manual pdf 14 page image

14UBI EasyCoder 301 Direct Protocol – Programmer's Guide Ed. 1Chapter 3 Principles of OperationFiles can be stored in the EasyCoder 301 on one of four devices:• "ROM:"Contains the built-in files necessary for using the printer.• "RAM:"Contains files created by the user.• "CARD1:"A PCMCIA card in the slot nearest the ON/OFF switch, whichcan be a DOS-formatted card or a specially formatted fontcartridge.• "CARD2:"A PCMCIA card in the slot farthest from the ON/OFF switch,which can be a DOS-formatted card or a specially formatted fontcartridge.The files in each device can be listed using the FILES command,e.g. FILES "RAM:"In general, ROM: and font cartridges in "CARD1:" or "CARD2:"are read-only devices: you cannot create, copy or delete files onthese devices, e.g. the following commands would cause errors:FILE&LOAD "ROM:NEWFILE",123COPY "RAM:OLDFILE","CARD1:NEWFILE"(if CARD1: contains a font cartridge)KILL "CARD2:OLDFILE"(if CARD2: contains a font cartridge)In contrast, "RAM:" and DOS-formatted cards in "CARD1:" or"CARD2:" are read/write devices which support all file operations.When using a Direct Protocol command which has the name of anexisting file as a parameter, you can:• specify the device name before the filename,e.g. KILL "RAM:MYFILE.TXT"• omit the device name,e.g. KILL "MYFILE.TXT"in which case, the printer will search each device in turn until itfinds a file with this name.If you use a Direct Protocol command which creates a file, you can:• specify the device on which the file is to be stored,e.g. FILE&LOAD "CARD1:MYFILE.TXT", 123• omit the device name,e.g. FILE&LOAD "MYFILE.TXT", 123in which case the file will be stored on "RAM:".13. File StorageDevices and FileNames