Bar Code from the 82162 Small HP-IL Thermal Printer
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1) This program requires the HP-IL Module, the HP-IL 82162 thermal
printer and the HP-41 Plotter Module.
2) Note: The program also requires Black thermal paper.
You won't get proper results if you try to use BLUE thermal paper in the
3) The program also requires at least 26 free registers to create an I/O
buffer in the unused program memory area of the HP-41. These 26
registers will remain "used" until you clear them by turning the HP-41
off, removing the Plotter module, then turning the HP-41 back on again.
This program is taken from the HP-41 Plotter Manual, pages 172 and 173.
Instructions: Execute the program. At the NAME? prompt, enter the
name of the program for which you wish to print bar code. The program
will produce rows of bar code printed on the 24 column thermal paper.
You will need to cut and paste the rows manually after they are printed
if you want a nice page of bar code.
Program Listing: The strange functions you see in the program
listing below at lines 3, 19, and 22 are functions from the Plotter
Module. The RUP at line 20 stands for Roll Up.
01 LBL "PRBC"
02 SF 25
04 CF 29
05 FIX 0
06 CF 23
11 FC?C 23
14 ASTO Y
15 LBL 01
16 "ROW: "
17 ARCL X
24 X NE 0?
25 GTO 01
That's it. Hope it's useful!