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- Apple II
- Technical Notes
- _____________________________________________________________________________
- Developer Technical Support
-
-
- ImageWriter
- #1: Custom Font Selection
-
- Revised by: Matt Deatherage November 1988
- Written by: Rilla Reynolds October 1986
-
- This Technical Note documents an ImageWriter II firmware bug which affects
- custom font selection.
- _____________________________________________________________________________
-
- Due to an ImageWriter II firmware bug, the ESC ' command neither selects nor
- reselects custom font 1 after custom font 2 is selected, unless you fix an
- errant pointer with the following command sequence first:
-
- 7-bit mode: ESC Z 00 20 ESC D 00 20 ESC '
- 8-bit mode: ESC Z 00 20 ESC '
-
- The ESC ' command works correctly on an ImageWriter I, but the sequence above
- is also acceptable; therefore, it is in your best interest to always utilize
- the given sequence to select custom font 1. It is possible that the printer
- was initialized and custom font 2 was selected long before your program was
- launched.
-
-