Apple II
Technical Notes
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                                                  Developer Technical Support


AppleTalk
#6:    Apple IIe Workstation Card Anomalies

Written by:    Dan Strnad                                           July 1989

This Technical Note describes known anomalies when using the Apple IIe 
Workstation Card.
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  o  Pascal Protocol Serial STATUS call returns incorrect results.
     When using the Workstation card, the Pascal STATUS call (normally 
     used for printing) does not properly indicate whether the card is 
     ready to receive characters.  Applications should avoid this call, as 
     the Pascal WRITE call in the firmware will perform this function 
     automatically.

  o  ProDOS 8 invisible bit is not respected.
     The invisible bit in the ProDOS 8 access byte was defined after the 
     release of the Apple IIe Workstation Card, so the ProDOS Filing 
     Interface present on the card treats this bit as reserved.


Further Reference
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    o    AppleShare Programmer's Guide for the Apple IIGS
    o    Apple IIe Technical Reference Manual