Revision D 12/09Chapter 4: Programming Commands 113
Expanded flash memory allocation
ASCII | GS “ 0x80 |
Hexadecimal | 1D 22 80 |
Decimal | 29 34 128 |
This sequence of commands is used to specify the number of flash sectors to be used for different applications. The begin and end sequence commands must be sent. All areas do not need to have flash sectors specified.
The command to request the number of user sectors is optional.
If more sectors are specified than are available the command sequence is ignored and the printer returns NACK.
If the sectors are available, and different from current parameters, all sectors are erased and the printer returns ACK. If the sectors specified are the same as current parameters, nothing is erased and the printer returns ACK.
1D | 22 80 00 |
| request number of user sectors available, printer returns nL nH |
1D | 22 80 30 |
| begin expanded flash memory allocation sequence |
1D | 22 80 31 nL nH | n sectors to logo/font area | |
1D | 22 80 32 nL nH | n sectors to usDefine extended | |
ASCII | US & s c1 c2 [character 1 data] ... [character k data] | ||
Hexadecimal | 1F 26 s c1 c2 [character 1 data] ... [character k data] | ||
Decimal | 31 38 s c1 c2 [character 1 data] ... [character k data] | ||
Values and ranges:
s = the number of dot rows in the character cell (maximum 64)
c = the ASCII codes of the first (c1) and last (c2) characters respectively
c1 = Hex
To define only one character, use the same code for both c1 and c2 j = s/8 = the number of bytes (vertically) in the character cell
k = c2 – c1 + 1 = the number of characters to be defined in this command string [character i data] = [ni d1 ... d(j x ni)] for 1 ≤ i ≤ k
ni = the number of dot columns for the ith character, 1 ≤ ni ≤ 16 d = the dot data for the characters
The number of bytes for the ith character cell is j x ni.
The bytes are printed down and across each cell.
See the illustration.
Defines and enters downloaded characters into RAM. The command may be used to overwrite single characters. User- defined characters are available until power is turned off or the Initialize Printer command (1B 40) is received.
Any invalid byte (s, c1, c2, n1, n2) aborts the command.
er data storage area |
| |
1D | 22 80 33 nL nH | n sectors to permanent font area |
1D | 22 80 34 nL nH | n sectors to electronic journal area |
1D | 22 80 40 | end expanded flash memory allocation sequence |
n = 0xFFFF means allocate all remaining sectors to this area; only one area can specify this parameter value.
