Apple II
File Type Notes
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                                                  Developer Technical Support

File Type:         $B9 (185)
Auxiliary Type:    All

Full Name:     Apple IIgs Classic Desk Accessory
Short Name:    Classic Desk Accessory

Written by:    Dave "Mr. Nifty" Lyons                          September 1990

Files of this type contain Apple IIgs Classic Desk Accessories in OMF format.
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Classic Desk Accessories are available by pressing Command-Ctrl-Esc, whether 
or not a desktop application is running.

Files of type $B9 in the System:Desk.Accs directory of the boot volume are 
automatically loaded with the Loader and installed into the system with 
InstallCDA at boot time.  Bit 15 of the auxiliary type is the "inactive" bit--
if it's set, GS/OS does not load the CDA.  All other bits in the auxiliary 
type are reserved and should be zero.

CDAs are stored on disk in Object Module Format, which is defined in Appendix 
F of GS/OS Reference.  Once the Loader brings your CDA's code into memory, the 
format is as specified in the Desk Manager chapter of Apple IIgs Toolbox 
Reference, volume 1.

CDA authors should be sure to read the material listed under "Further 
Reference."


Further Reference
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  o  Apple IIgs Toolbox Reference, Volumes 1 and 3
  o  GS/OS Reference
  o  Apple IIgs Technical Note #71, Desk Accessory Tips and Techniques

