Editing Apple IIe (section)

==Apple IIe Card for Macintosh==
{{Main|Apple IIe Card}}

In March 1991, shortly after the release of the [[Macintosh LC]] series, Apple released the [[Processor Direct Slot|PDS]] slot-based [[Apple IIe Card]] for the [[Mac (computer)|Macintosh]]. By plugging this card into a Macintosh LC (and later models incorporating an LC PDS slot), through hardware and (some) software emulation, the Macintosh can run most software written for the 8-bit Apple IIe computer. This miniaturized computer on a card was made possible by a chip called the Gemini, which is heavily based on the [[Mega II]], first used in the Apple IIGS computer to emulate the Apple IIe. <!--[[Image:PDS_Apple_IIe_Card.jpg|thumb|right|200px|The Apple IIe Card for Macintosh.]]--> The Gemini duplicates most of the functions of a standard Apple IIe, minus RAM, ROM, video generation and CPU.

Many of the built-in Macintosh peripherals can be "borrowed" by the card when in Apple II mode (i.e. extra RAM, 3{{frac|1|2}}-inch floppy, AppleTalk networking, clock, hard disk). It can run at either standard 1&nbsp;MHz speed or an accelerated 1.9&nbsp;MHz. As video is emulated using Macintosh [[QuickDraw]] routines, it is sometimes unable to keep up with the speed of a real Apple IIe, especially in the case of slower host machines. With a specialized [[Y-cable]], the card can use an actual Apple 5.25, [[Macintosh External Disk Drive#Apple UniDisk 3.5|Apple UniDisk 3.5]] and Apple II joystick or paddles. The Apple IIe Card is thought of as an Apple II compatibility solution or [[emulator]] rather than as an extension of the Apple II line.