EPSON Imaging Technology Center Page: 56
Revision: 1 10/6/00
6.31 Extended 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:
First group (parameter embedded type) command format
76543
2
10
Command bit
Parameter bit
0
76543
2
10
Command bit
1
76543210 76543210
MSB
LSB
Parameter extention bit
•••
Number of parameter Follow parameter
* 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
.
