DOCUMENTATION FOR DUMP-80

The  Dump-80  Routine  is  a  down-and-dirty 80-column screen dump, especially
written  for  those  of  you  who (like me) were done out of the Grappler's 80
column  dump  routine  when  upgrading  to  an enhanced //e. This routine will
change  all  mousetext  characters  to  spaces,  and  will correctly print all
inverse letters, uppercase notwithstanding.

The  routines  lives in the freespace at $300; space is (always) at a premium,
so  this  is  definitely no-frills code. It will not check to see that you are
displaying 80 columns, and assumes your printer is in slot 1.

To  use, merely CALL 768 from Basic; immediate & deferred modes are both okay.
You  could  also  JSR  $300 from a machine language program, or do a 300G from
the  monitor. The routines dumps the 80 columns screen, and adds 5 blank lines
in case you want to tear off the page.

The  routine  feeds the initialization string "<CTRL-I>0N" to the printer upon
enabling  it.  This  string can be modified by you if necessary, but remember:
if  your  interface  card echos to the screen, things will get royally screwed
up in no time flat.

The  Initialization  String  is  at  the  tail end of the program, starting at
$3C8;  the first byte is a length-of-string byte, (currently $04), then 3 Init
bytes  plus  a  Carriage Return (currently $89, $B0, $CE, $8D). There are only
three  more  available  bytes  to  use without overwriting the vector table at
$3D0.