Download to Active Flash Sector | Epson A794-D100 specification

Chapter 6: Programming Information

A794 Owner’s Guide

Download to Active Flash Sector

Contains a start address (ah x 256 + al) and count (ch x 256 + cl) of binary bytes to load into the selected sector, followed by that many bytes. The start address is relative to the start of the sector. Addresses run from 0 to 64K.

The printer may return one of several responses. ACK means that the data was written correctly and the host should transmit the next block. NAK means that, for some reason, the data was not written correctly. This could mean that communications failed or that the write to flash failed. The alternatives seem to be to retry the block or halt loading and assume a hardware failure.

ASCII	GS DC1 al ah cl ch d1…dn
Hexadecimal	1D 11 al ah cl ch d1…dn
Decimal	29 17 al ah cl ch d1…dn
Value of al	= low byte of the address (it is sent before the high byte)
Value of ah	= high byte of the address (it is sent after the low byte)
Value of cl	= low byte of the count (it is sent before the high byte)
Value of ch	= high byte of the count (it is sent after the low byte)

Value of d	= data bytes, from 1 to n
Value of n (for number of data bytes)		Range of Address (al ah)	Range of Count (cl ch)
((ch * 256) + cl)		0000-FFFF (hexadecimal)	0001-FFFF (hexadecimal)

Range Addresses run from 0 to 64K.

Related Information

Available only in download mode.

126	March 1999

Image 132

Epson A794-D100 manual Download to Active Flash Sector, Ch * 256 + cl Ffff hexadecimal

Contents

Owners Guide Page Legal Notices Disclaimer Power Supply Contents Communication Interface Programming Information Installations Features OptionsDescription of Printer Models Available Description of Printer Models Available Model IdentificationCommunication Interfaces Installations Setting up the printer Features On a Flat Surface Vertically see note Options Using the Printer Printer Controls Changing Paper Testing the Printer Reset Button Printer ControlsPaper Feed Button Tone Changing Paper A794 Owner’s Guide Paper jams Troubleshooting the Printer Testing the Printer Poorly printed test printout Troubleshooting the Printer Troubleshooting the Printer Printer Tone and Green LED Printing Problems Printer Does Not Work Ordering Thermal Paper Ordering Miscellaneous Supplies Thermal Paper Specifications How to OrderOrdering Thermal Paper Manufacturers Ordering Power Supply and Power Cord Ordering Miscellaneous SuppliesOrdering Cash Drawers Ordering Communication Cables Wall-Mount Kit Paper Specifications Print Zones CharactersCharacter Sets Characters Print ModesSize Standard Paper Specifications Print ZonesPrint Zones for 80 mm Paper Print Zones for 82.5 mm Paper Character Sets Code Code Code Code Code Code Code Code Communication Overview RS-232C Interface Sending Commands Using DOS to Send CommandsUsing Basic to Send Commands Communication Overview RS-232C Interface Print Speed and Timing XON/XOFF Protocol DTR/DSR Protocol RS-232C Technical Specifications Communication ConnectorsPower Connector Pin DB-9 Connector Pin DB-25 Connector Cash Drawer Connector RS-232C Settings Ieee Bi-directional Parallel Connector Parallel Interface Communication Interface List of Commands Comparisons Command Descriptions Programming Information List of Commands Programming Information 26 s c1 c2 n1 d1...nn dn NL nH Comparisons 1D 2A n1 n2 d1...dn Command Descriptions Command Conventions Printer Function Commands Clear PrinterPerform Full Knife Cut Hexadecimal Decimal Exceptions Perform Partial Knife Cut Generate ToneHexadecimal Decimal Formulas Select Print Mode Value of n Hexadecimal Decimal Default Select Peripheral Device for Multi-DropInitialize Printer Select Paper Sensors to Output Paper End Signals Default of n ExceptionsRange of n Enable or Disable Panel Button Select Sensors to Stop Printing Read from Non-Volatile Memory Generate Pulse to Open Cash DrawerRange of k Value of p1 Select Cut Mode and Cut Paper Write to Non-Volatile Memory NvramValue of n1 Value of n2 Vertical Positioning and Print Commands Print and Feed One LineActivate Carriage Return Feed n Print Lines Range of n Default Feed n Dot RowsAdd n Extra Dot Rows Print Set ColumnSet Line Spacing to 1/6 Inch Set Line Spacing Print and Feed Paper Print and Feed n Lines Horizontal Positioning Commands Horizontal TabSet Right-Side Character Spacing Set Absolute Starting Position Value of k Default Set Horizontal Tab Positions Set Relative Print Position Select Justification Compatibility Information A794 receipt vs. A793 receipt Set Left Margin Range of nLRange of nH Set Horizontal and Vertical Minimum Motion Units GS P x y Set Printing Area Width Print Characteristics Commands Select Double-Wide CharactersSelect Single-Wide Characters Select 90 Degree Counter-Clockwise Rotated Print Select Pitch Column WidthHexadecimal Decimal Related Information Select Character Set Define User-Defined Character Set Values and Ranges Select or Cancel Underline Mode Cancel User-Defined Character Copy Character Set from ROM to RAMESC 0 0 Select or Cancel Emphasized Mode Select or Cancel Double Strike Select or Cancel Italic Print Select Character Code Table Select or Cancel 90 Degree Clockwise Rotated Print Select or Cancel Upside-Down Print ModeSelect International Character Set Select Or Cancel White/Black Reverse Print Mode Select or Cancel Smoothing Mode Select Superscript or Subscript Modes Summary of Rotated Printing Graphics Commands Print Raster GraphicsDownload BMP Logo Hexadecimal Decimal Value = Number of dots to be moved from the beginning of the line Select Bit Image Mode Select Single-Density Graphics Select Double-Density Graphics Select the Current Logo Define Downloaded Bit Image Ranges Print Downloaded Bit Image Convert 6 Dots/mm Bitmap to 8 Dots/mm BitmapHexadecimal 1D 2F m Decimal Value and Range of m Printer Status Commands Request Alternate Status parallel printers only Transmit Peripheral Device Status RS-232C printers only Transmit Paper Sensor Status Hexadecimal Decimal Values Transmit Printer ID Hexadecimal 1D 49 n Decimal Transmit Printer ID, Remote Diagnostics Extension Values of n Programming Information A794 Owner’s Guide Select or Cancel Automatic Status Back ASB Default ASB disabled Exceptions Undefined Off Not used. Fixed to off Transmit Status When n is out of the specified range, the command is ignored Send Printer Software Version Print Test FormAX t Real Time Commands Rules for Using Real Time Commands Busy Line and Fault Conditions Moving Data through the Buffer Recognizing Data from the Printer Real Time Request to Printer Real Time Status Transmission Related Information = Transmit Printer Status = Transmit Error Status = Transmit RS-232C Busy Status = Transmit Receipt Paper Status Real Time Printer Status Transmission Hexadecimal Decimal Value of Byte Bar Code Commands Select Printing Position of HRI CharactersSelect Pitch of HRI Characters Select Bar Code Height Print Bar Code UPC-A Default Formulas Select Bar Code Width Mode Commands Print and Return to Standard ModeCancel Print Data in Page Mode Hexadecimal 0C Decimal Exceptions Print Data in Page Mode Select Page ModeHexadecimal 1B 0C Decimal Exceptions Hexadecimal 1B 4C Decimal Exceptions Select Standard Mode Ascii ESC S Select Print Direction in Page Mode Default Exceptions Set Print Area in Page Mode Select Character Size Set Absolute Vertical Print Position in Page Mode Set Relative Vertical Print Position in Page Mode Macro Commands Select or Cancel Macro DefinitionHexadecimal 1D 3A Decimal Formulas Execute Macro Value of rValue of t Flash Download Commands Printer operation Switch to Flash Download Mode Return Boot Sector Firmware Part NumberReturn Segment Number Status of Flash Memory ESC Return Boot Sector CRC Select Flash Memory Sector to DownloadGet Firmware CRC Range of n Exceptions Erase All Flash Contents Except Boot Sector Return Main Program Flash CRCErase Selected Flash Sector Download to Active Flash Sector Ch * 256 + cl Ffff hexadecimal March 127 Reset Firmware Erase User Flash Sector Index Basic 130 March March 131 132 March