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Apple DOS Compatibility Card

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The DOS Compatibility Card contains an x86 processor and plugs into PDS expansion in compatible Macintosh models such as the Power Macintosh 6100.


Apple's DOS and Windows drivers support an Apple-compatible CD-ROM, folder sharing and clipboard sharing. Early versions of PC support software for the DOS card also included video drivers for MS-DOS applications such as AutoCAD or WordPerfect. MS-DOS and Windows are installed from the standard installation disks or CD-ROMs provided by Microsoft.

PC Setup 1.0.2: This is the last downloadable release that supports the Houdini I card. The downloadable software from Apple only includes the PC Setup control panel, so you may need to hunt around for DOS drivers or experiment with those provided with PC Setup 1.5 or 1.6.4.

PC Setup 1.5: This version supports the Houdini II and LC 630/640 cards. It runs on System 7.5.3 on the LC 630/640, or 7.1.2 and 7.5.3 on the 6100, so it is handy if you don't have much RAM for the Mac OS. DOS clipboard sharing is not supported and RAM must be installed on a Houdini 630/640 card. Open Transport is not officially supported but many people found that Open Transport 1.1.1 works. The downloadable software from Apple includes separate Mac and PC disk images.

PC Setup 1.6.4: This is the last version released by Apple and it supports all but the Houdini I card. It requires 7.5.3 and Open Transport 1.1.1, and was officially supported by Apple up to Mac OS 8.1. In spite of these restrictions, many users have used PC Setup 1.6.4 in limited fashion with Mac OS 8.5, 8.6 and 9.x (see Networking Problems below for solutions). The downloadable software from Apple includes separate Mac and PC disk images. Apple's PC drivers are still 16 bit but you may wish to try using them with earlier versions of PC Setup.

PC Setup 2.x: Apple provided technical information about DOS cards to a third party developer, Discovery Software, so that they could write 32 bit Windows drivers to improve Windows 95 and 98 performance. PC Setup 2.x includes 32 bit hard disk and CD-ROM drivers, and enhances network support. It also supports Mac OS 8.5, 8.6 and 9.x and tries to correct earlier networking problems. PC Setup 2.x is not a full installation and it is necessary to install PC Setup 1.6.4 first.

PC Setup 2.x, was sold commercially for several years. When the third party developer discontinued it, PC Setup 2.1.7, the final version, was made available as a free download. You will need three files (Mac and PC installation sets and the PDF manual). Install using the license code below:

  • Authorization Code: UEV-EVZ-7TU
  • License Name: FREE
  • License Site: 469

See PcSetup 2.x for downloads and information.


See Also