EasyCoder 91/300 dpi – Addendum to User's Manual
5
Remarks, cont'd.
When is it necessary to reconfigure memory in the printer?
• If your label size is larger then the current image buffer.
• If you need to change the size of the forms memory to accommodate more or less
forms.
• If you need to change the size of the graphics memory to accommodate more or less
graphics.
• If you have replaced the EPROM
• If you have fitted an unformatted memory cartridge.
Image Buffer
The image buffer is the area where the active print image is temporarily stored.
Calculate the memory size needed for your image area by measuring the largest form
intended to be printed (take future needs into consideration).
For less than full width labels, also refer to the q command, which allows trading off
print width for increased label length with the same image buffer size.
Formulas:
[(Height in mm x Dots per mm) x (Width in mm x Dots per mm)]/ (1024 x 8) = Kbytes required
or
[(Height in inches x Dots per inch) x (Width in inches x Dots per inch)]/ (1024 x 8) = Kbytes required
The printhead has a density of either 8 dots per mm (203.2 dots per inch) or 11.81 dots per mm (300 dots per inch).
Rule of thumb for full width labels (Printhead density 8 dots/mm):
Label height in inches
×
22Kb (Min. 44Kb)
Label height in mm
×
1Kb (Min. 44Kb)
Round off to the next higher whole number.
Rule of thumb for full width labels (Printhead density 11.81 dots/mm):
Label height in inches
×
46.8 Kb (Min. 22Kb)
Label height in mm
×
1.842 Kb (Min. 22Kb)
Round off to the next higher whole number.
Form Memory
The Form memory is for permanent storage of label forms. A typical form requires 1
kbyte of memory. The size of each form can, for example, be displayed with a DIR
command at the DOS prompt.
Graphics Memory
The Graphics memory is for permanent storage of label graphics. Graphic files can vary
greatly in size. The size of each PCX file can, for example, be displayed with a DIR
command at the DOS prompt.
Examples
Resetting the memory via the serial port:
M104,5,5
↵
:Sets the memory to the value 106,5.1.5,3
1
M COMMAND – MEMORY ALLOCATION, cont'd.
(page 92)
1
/. This setting format the
memory for a 127 mm (5)"
long full width label for a
printer with 8 dots/mm print-
head density.
Also note that the memory
allocation values returned
e.g. by a U command may
differ slightly from the values
entered using an M command
because of certain round off
calculations in the firmware.
This should have few prac-
tical consequences and can
generally be ignored.
