Editing Apple IIe Card (section)

== Technical aspects ==
Like the [[Apple IIe]] itself, the Apple IIe Card uses an onboard [[WDC 65C02|65C02]] [[Central processing unit|CPU]].{{r|spencer199012}} The CPU is software-configurable to run at the Apple IIe's native 1.0 [[hertz|MHz]] speed or at an accelerated 1.9&nbsp;MHz. Video emulation (text and graphics) is handled through software using native Macintosh [[QuickDraw]] routines, which often results in operations being slower than a real Apple IIe except on higher-end machines. Any Macintosh that supports the card can be switched into 560×384 resolution for better compatibility with the IIe's 280×192 color [[Apple II graphics#High-Resolution (Hi-Res) graphics|High-Resolution graphics]] (essentially doubled in both directions on the Macintosh) and 560x192 monochrome Double-High-Res (doubled vertically), using the card's onboard 17.2349&nbsp;MHz [[crystal oscillator|oscillator]] in place of the usual video clock thanks to the local bus nature of the PDS slot. This was particularly applicable to the Color Classic which is otherwise fixed at 512×384 resolution; the monitor scan rate remains the same, but horizontal pixel density (and total pixel clocks per [[scanline]]) is increased by 10% to fit the greater resolution in the same width.

The IIe card has 256K [[Random-access memory|RAM]]; half is used to emulate the Apple IIe's standard 128K memory (reproducing its 64K main RAM plus the 64K bank-switched [[Apple 80-Column Text Card|Extended 80-Column Text Card]]), and a small portition of the other half stores the IIe's 16K ROM. ''Macworld'' reported that because [[Apple IIGS]] engineers helped design the IIe Card, all [[copy protection|copy-protected]] and other software except for "a few very esoteric games" are compatible.<ref name="spencer199012">{{Cite magazine |last=Spencer |first=Cheryl |date=December 1990 |title=Mac LC |url=https://archive.org/stream/MacWorld_9012_December_1990#page/n193/mode/2up |magazine=[[Macworld]] |pages=180–187 |volume=7 |issue=12}}</ref> The host Macintosh emulates or provides native access to many of the [[expansion card]]s and [[peripheral]]s one might install in a bare Apple IIe. These services provided to the IIe card makes the simultaneous running of the host's [[System 7]] impossible. Hardware services include a 1.44 MB 3.5" [[SuperDrive]], [[computer mouse|mouse]], 1 MB RAM, 80-column text and graphical [[monochrome]] or color [[computer monitor|display]], clock, [[numeric keypad]], two hardware [[serial port]]s (in addition to the emulated serial port necessary for the IIe mouse), [[SCSI]] [[hard disk drive|hard drive]], and [[AppleShare]] [[file server]]. An included "[[Y-cable]]" enables the attachment of up to two external 140 KB [[floppy disk]] [[Disk II|5.25" Drives]], an 800 KB "intelligent" 3.5" [[Macintosh External Disk Drive#Apple UniDisk 3.5|UniDisk drive]], and an Apple II [[joystick]] or [[paddle (game controller)|paddle]] control for use in Apple IIe emulation mode. [[Macintosh External Disk Drive#Apple 3.5" Drive|800 KB 3.5" Drive]] and 1.44 MB SuperDrives are not supported nor function if attached directly via the Y-cable due to the [[Integrated Woz Machine|Disk Controller]] on the IIe card lacking compatibility. (chip labeled U1A located in zone A1 of card – lower left as pictured above)

The product included the PDS card, Y-cable, owner's manual and two 3.5" floppy disks: the 'Apple IIe installer disk' and the 'Apple IIe card startup disk'. Version 2.2.2d1 is the final revision of the startup disk. Version 2.2.1 and a patch to reach 2.2.2d1 was originally available at Apple Support Area (which has now since been removed, as is the case with the [https://archive.org/details/Apple_IIe_Card_Owners_Guide  original manual]).