TransAct Ithaca 8000 Programmer's Manual page 246

Programming Codes
Function Define Single User-Defined Bit-Image
ASCII GS * x y d
Hexadecimal 1DH 2AH x y d
Decimal <29> <42> x y d
Range 1 x
1 y
0 d
Description The GS * x y d
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.
Page 232
... d(x x y x 8)
1
... d(x x y x 8)
1
... d(x x y x 8)
1
255
48
255
... d(x x y x 8) command defines a single downloaded bit-image
1
Column one
d1 dy ... ...
+1
d2 dy
+2
.... .... .... ....
dy
Rev D
®
Ithaca 8000 Programmer's Guide
....
.... ....
d(x y 8)
MSB
d
n
LSB
100-06908