Apple IIe and IIc: Can‘t Use Desktop

The Desktop program, although it runs under ProDOS 8, was not designed to run on an Apple IIe or Apple IIc.
If you look at the memory locations starting at 1000, you'll see:

1000: 18 FB 5C 04 E0 D0

When disassembled, they translate into

1000: 18 CLC
1001: FB XCE
1002: 5C 04 E0 D0 JMP E0D004

This is the segment of code that the Desktop executes when it exits back to ProDOS. However, those assembly language instructions are implemented only on the Apple IIGS's 65816, not on the Apple IIe's and IIc's 6502.
Published Date: Feb 18, 2012