Epson 870 .2”, 6.31Extended Raster Graphics Specific Commands-BinarayMode Commands for“ESC

6.31Extended Raster Graphics Specific Commands-Binaray Mode Commands for“ESC.2”

Format:

<xxxxxxxx>B (Command byte)

Range of Values for Parameters: - Function:

			1)				The internal commands fall into two groups.
							First group: Group of commands in which the parameter is embedded in the
							command byte:
									XFER
									MOVX
									MOVY
									COLR
							Second group: Group of commands in which the parameters are not embedded in
							the command byte:
									CLR
									CR
									EXIT
									MOVXBYTE
									MOVXDOT
			2)				The command byte has the following meaning:
						2	First group (parameter embedded type) command format
7	6	5	4		3		1	0
				0
					MSB			LSB			Parameter bit
											Parameter extention						bit
											Command bit
						2
7	6	5	4		3		1	0	7	6		5	4	3	2	1	0	7	6	5	4	3	2	1	0
				1																						•••

Number of parameter Follow parameter

Command bit

*If the three most significant bits of the command byte are not all 1, this indicates the first group.

*The command is indicated by the three most significant bits:

<XFER>: 001xxxxxB

<MOVX>: 010xxxxxB

<MOVY>: 011xxxxxB

<COLR>: 100xxxxxB

*The fourth bit is the bit for parameter extension. When this bit is 0, this means that the parameter(s) embedded in the command byte are the command parameters just as they stand, while when this bit is 1, this means that the parameter embedded in the command byte is the number of subsequent parameter bytes.

The <XFER> command is an exception, and, only for this command, the parameter means the subsequent number of bytes of the image data after compression.

EPSON Imaging Technology Center	Page: 56
Revision: 1	10/6/00