pageable module DMKFCB. Installations may add additional FCB images to
DMKFCB as long as the size of DMKFCB does not exceed the size of two pages.
A default virtual FCB image is provided for virtual 3211-type printers (3211,
if no FCB has been previously loaded for that virtual device. The image (66 bytes
long with a channel 1 code at FCB position 1 with all other channels defined) is
not stored in the spool file but only used for virtual processing of the print com
mands.
Notes:
1. The Forms Control Buffers must have compatibility of channel one; that is,
channel one and line one must be the same physical line for all FCB's that are
built, or forms misalignment results.
2. If the FCB macro is coded to have more than one channel designated
print line, the macro includes only the last channel in the buffer for that print
line. This is because a buffer byte can only be loaded with one channel code.
3. When an operator loads a default FCB, it is recommended that all channels be
defined to prevent an undefined channel error.
Example 1: If you wanted your printer to print:
8 lines/inch
print line 3 in channel 1
print line
print line
print position
you would code the FCB macro (with a name,
FCB
ing:
FCB
either a virtual or real
for the real printer.
The INDEX parameter is only valid for a 3211 printer. If INDEX is not specified
for the 3211 printer, no indexing is done. If INDEX is specified without a value,
the value coded in the FCB macro is used and if INDEX is specified with a value,
the specified value overrides the value coded in the FCB macro.