Epson Commands
PcOS Series 80PLUS
Programmer's Guide
Command Descriptions
Page 70
Rev B 4/13/99
Function
Define single user-definable bit-image
[EA]
ASCII
GS
*
x
y
d1
…
d
(
x
x
y
x 8)
Hexadecimal
1DH
2AH
x
y
d1
…
d
(
x
x
y
x 8)
Decimal
<29>
<42>
x
y
d1
…
d
(
x
x
y
x 8)
Range
1
≤
x
≤
255
1
≤
y
≤
48
0
≤
d
≤
255
Description
This command defines a single downloaded bit-image using the number of
dots specified by
x
and
y
in the RAM buffer area (volatile memory).
The number of dots in the horizontal direction is
x
x 8.
The number of dots in the vertical direction is
y
x 8.
If (
x
x
y
x 8) exceeds the size of the buffer, the image will be truncated.
d
indicates bit-image data. Data (
d
) specifies a bit printed to 1 and not
printed to 0.
After a downloaded bit-image is defined, it may be saved to the nonvolatile
EEPROM storage buffer using the ESC ‘ command where it will remain
indefinitely. Otherwise, the image will remain in the RAM buffer where it
is available until ESC @ or ESC & is executed; the printer is reset; or the
power is turned off.
A representation of the format of a downloaded bit-image is depicted
below:
Column one
d1
dy
+1
...
...
....
d2
dy
+2
....
....
....
....
....
....
dy
⇐
d(x
×
y
×
8)
dn
MSB
LSB
→