Before there was Boot Camp, there were DOS Compatibility Cards

The situation wasn't that good just a scant 15 or so years ago. Back in the bleak days before the triumphant return of Steve Jobs to 1 Infinite Loop, Apple had a broad and confusing product line. Since DOS and Windows 3.1 were already entrenched in business worldwide, Apple knew that they had to have a way for Macs to run Microsoft operating systems in order to gain any sort of traction in the corporate world.
Edible Apple ran a wonderful retrospective yesterday that looked at Apple's DOS Compatibility Cards. These were basically PCs on a NuBus or PCI cards that were inserted into a slot in the Mac, using the Mac's power supply, floppy and hard drives, and keyboard and mouse. Sporting such amazing CPUs as the Intel 486SX running at a whopping 25 MHz clock speed, the original cards worked with the Centris 610 and Quadra 610 and were released in 1994. By the next year a second edition was released with an Intel 486DX/66, and was targeted at the PowerMac 6100 and Performa 6100.
Further research shows that there were several subsequent cards that included even faster Pentium and Cyrix 6x86 processors, were called "PC Compatibility Cards," and were designed for use in other PowerMac models. I can recall acquiring one of the Pentium-based cards and using it to try to entice our one DOS holdout department to move to Macs (they didn't).
Today's Windows compatibility is the best it has ever been on the Mac platform, and usually the only "hardware upgrade" required is to add some inexpensive RAM to the host Mac. Things might sometimes change slowly, but at least in the world of technology, the change is usually for the best.
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With our zippy Intel Macs able to eagerly boot up Windows 7 in Boot Camp, VMWare, Parallels, and VirtualBox, it's difficult to fathom that...
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I had one of the OrangePC cards in my PM 7100. It ran Win95, but it was really freaky about letting me install any native Win95 apps.
December 12 2009 at 8:29 AM Report abuse Permalink rate up rate down ReplyI also used to have one of these on my PowerMac 4400.
I primarily bought it just to run StarCraft. lol
I think you meant to say, "BEFORE APPLE COMPUTERS BECAME PRETTY LOOKING PCs, there DOS compatibility cards."
I sooo wanted one of these when I was a kid.
December 10 2009 at 3:04 PM Report abuse Permalink rate up rate down ReplyWe had these in our Mac Lab in middle school. We were so psyched to get a whole lab full of PowerPC's (Performa 6100s I think), complete with DOS card in each system. Too bad they were such dogs as actual machines -- but it was super neat to press I think it was CMD (then known as Open Apple), Option, W and go into Windows 3.11.
My friend Lee and I even installed Windows 95 on a few machines, until we learned what software licensing was and how we couldn't do that. Oh, good time!
Dont forget about the OrangePC cards. From what I remember, they were basically standard socket 7 systems jammed on a card, and could take memory and processor upgrades. IIRC, a friend of mine had one which he upgraded to a K-6 III+ at 500 mhzânot all that shabby given the time frame.
December 10 2009 at 1:01 PM Report abuse Permalink rate up rate down ReplyI had a Compatibility Card in a PowerMac 6200 a few years ago. It was running a Pentium chip of some sort - a PI or a PII from memory. These were never, ever used in a PC system without a cooling fan on the heatsink; but the compatibility card had a fanless heatsink. Result - random crashes and lock-ups in Windows once the PC had been running for half an hour or so. These went away completely as soon as I removed the passive heatsink from the card and replaced it with a fan-cooled heatsink.
I still wonder if this (back in Windows 95 days) was a deliberate strategy by Apple to make Windows look less stable than it actually was, certainly compared to the less-than-rock-solid System 7.5...
I had a Power Macintosh 6100/66 DOS Compatible. I used to love working in OS 7 and then pressing Command-Return to flip over to Windows 3.1 to play Minesweeper.
Now, in "the future," I have a PowerBook G4 and am stuck with VirtualPC and Windows XP. I miss the old days.
I remember a guy that had one of those in his "pizza box" 6100/60. I thought it was the most amazing thing ever that you could run windows on your mac and just switch to it with some key commands...
December 10 2009 at 11:05 AM Report abuse Permalink rate up rate down ReplyIt got better... since the two systems ran independently of one another, you could simply swap out the video pass through that came with the card and run the system with two displays, one in each environment. The keystroke stuff was literally nothing more than a software KVM switch, so each side could continue doing whatever it was told to do while you went back to work in the other.
It wasn't uncommon for me to have the Mac side chugging away at some task while I played NBA Jam on the PC end.
I love multi-tasking, especially if it allows me to have work going on while playing games.
December 10 2009 at 11:19 AM Report abuse Permalink rate up rate down ReplyHot Apps on TUAW
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