Editing Apple II (section)

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

Although not an extension of the Apple II line, in 1990 the Apple IIe Card, an expansion card for the [[Macintosh LC]], was released. Essentially a miniaturized Apple IIe computer on a card (using the Mega II chip from the Apple II<small>GS</small>), it allowed the Macintosh to run 8-bit Apple IIe software through [[hardware emulation]], with an option to run at roughly double the speed of the original IIe (about 1.8&nbsp;MHz).  However, the video output was emulated in software, and, depending on how much of the screen the currently running program was trying to update in a single frame, performance could be much slower compared to a real IIe.  This is due to the fact that writes from the 65C02 on the IIe Card to video memory were caught by the additional hardware on the card, so the video emulation software running on the Macintosh side could process that write and update the video display.  But, while the Macintosh was processing video updates, execution of Apple II code would be temporarily halted.

With a breakout cable which connected to the back of the card, the user could attach up to two [[Disk II#UniDisk and Apple 5.25 Drive|UniDisk or Apple 5.25 Drives]], up to one [[Macintosh External Disk Drive#Apple UniDisk 3.5|UniDisk 3.5 drive]], and a DE-9 Apple II joystick.  Many of the LC's built-in Macintosh peripherals could also be "borrowed" by the card when in Apple II mode, including extra RAM, the Mac's internal 3.5-inch floppy drives, AppleTalk networking, any ProDOS-formatted hard disk partitions, the serial ports, mouse, and real-time clock. The IIe card could not, however, run software intended for the 16-bit Apple II<small>GS</small>.