Compuprint MDP40B Programmer Manual - Manual (Page 182)

C-40
The command is not accepted (command specification error) if:
•
It is sent inside a printing field.
•
The n and m parameters are different from those allowed
•
The d
0
- d
1
- d
2
parameters are incompatible with one another
ESC h 0
24 pin Downline Loading Characters into the User Memory (DLL).
(Olivetti PR2, PR40+)
ASCII Code ESC h 0 n m d
0
d
1
d
2
D
1a
D
1b
D
1c
......D
nc
Hexadecimal Value 1B 68 30 n m d
0
d
1
d
2
D
1a
D
1b
D
1c
......D
nc
Decimal Value 27 104 48 n m d
0
d
1
d
2
D
1a
D
1b
D
1c
......D
nc
The command enables the characters received to be transferred from the line into the user
memory (9 pin). The type of DLL, 9 or 24 pin, is selected with the command ESC ! G n.
Parameters n and m are, respectively, the binary start and end codes and mark the
range in which the characters will be loaded (as a number m - n + 1). In the particular
case where n is equal to m, a single character will be loaded.
Values n and m must be between Hex. 20 - 7E and 80 - FE
The format of each individual character is as follows:
d
0
d
1
d
2
D
1a
D
1b
D
1c
......D
nc
where:
- d
0
, d
1
, d
2
represent, respectively, as binary values:
- d
0
: number of leading columns.
- d
1
: number of main columns.
- d
2
: number of trailing columns.
- The sum (d
0
+ d
1
+ d
2
) defines the number of columns in the character’s gross matrix.
- D
1a
, D
1b
, D
1c
..........D
nc
constitute the pattern of the character currently being loaded.
Each data column has three bytes.