Ithaca ITHERM 280, Programmer'S Manual

Page: 245 / 318

* % 8 %.
Function Define Single User-Defined Bit-Image
ASCII GS * x y d
1
… d(x x y x 8)
Hexadecimal 1DH 2AH x y d
1
… d(x x y x 8)
Decimal <29> <42> x y d
1
… d(x x y x 8)
Range 1
≤
x
≤
255
1
≤
y
≤
48
0
≤
d
≤
255
Description The GS * x y d
1
… d(x x y x 8) 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 is truncated. d indicates bit-image data and specifies a bit printed to
one and not printed to zero. After a downloaded bit-image is defined, it may be
saved to the nonvolatile flash storage buffer using the ESC ‘ command where it
remains indefinitely. Otherwise, the image remains in the RAM buffer where it is
available until ESC @ or ESC & is executed; the power is turned off; or the
printer is reset. 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)
d
n
MSB
LSB
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