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#13: ROM 1.0 Modem Firmware Bug

Author: Mike Askins (rev. Matt Deatherage)
Year: 1987

... discusses a bug involving buffering and serial port setting commands in the modem firmware in ROM 1.0.

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Apple II
Technical Notes
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                                                  Developer Technical Support


Apple IIGS
#13:    ROM 1.0 Modem Firmware Bug

Revised by:    Matt Deatherage                                  November 1988
Written by:    Mike Askins                                         April 1986

This Technical Note formerly discussed a bug involving buffering and serial 
port setting commands in the modem firmware in ROM 1.0.
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Apple IIGS ROM 2.0 fixes a bug involving buffering and serial port setting 
commands in the modem firmware.  You should not have to write a special case 
to handle this bug since it is reasonable to expect users to have the updated 
ROM which is offered as a free upgrade from Apple.