
A756- 8xxx new commands and features
January 14, 1998 file name 568xcmds.doc page 6 of 11
Axiohm IPB company confidential
format ASCII ESC ‘ m 3-byte addr m-byte data
Hex 1B 27 m 3-byte addr m-byte data
Decimal 27 39 m 3-byte addr m-byte data
range 0 ≤ m≤ 255
0 ≤ addr≤ 65,535
0 ≤ data≤ 255
Note that the address field is three bytes. The first byte is ignored now, and is available for
future expansion to multiple 64K pages of user data storage. The second and third bytes
specify an address within a 64K page, in high:low format.
This command writes m bytes of data to the user data storage flash page at the address
specified. The printer will wait for m bytes of data following the 3-byte address addr. If m=0,
the printer will wait for 256 bytes of data. If any of the m locations starting at addr in flash have
already been written to, the printer will not write any of the data for this command string. See
the associated flash status command for obtaining the results of this command.
ESC 4 m addr data Read from user data storage.
format ASCII ESC 4 m 3-byte addr
Hex 1B 34 m 3-byte addr
Decimal 27 52 m 3-byte addr
range 0 ≤ m≤ 255
0 ≤ addr≤ 65,535
Note that the address field is three bytes. The first byte is ignored now, and is available for
future expansion to multiple 64K pages of user data storage. The second and third bytes
specify an address within a 64K page, in high:low format.
This command reads m bytes of data from the user data storage flash page at the address
specified, and returns them to the application. If m=0, the printer will read and return 256 bytes
of data. The printer sends a Carriage Return (0x0D) following the final byte of data.
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