Power Macintosh 6100 DOS and AV
In September 2009 I started to downsize this collection to a few items and then archived this section to its own subdomain at the start of October 2011.
The first ever Macintosh to be powered by a PowerPC processor the PowerMac
6100/60 which was introduced in March of 1994 and discontinued under a year
later when it was replaced by a 66Mhz variant.
The PowerMac 61xx series comprises variants of the Power Macintosh 6100, the
Performa 61xx series, and the WorkGroup Server 6150 series. They all are
essentially the same machine, sharing a common case, motherboard and ROM. Aside
from minor variations in the native CPU/bus speed all other features are
user-installable. This series is also closely related to the Power Macintosh
7100 and 8100 series. These three families are collectively known as the Nubus
The 6100/60 was the lowest configuration available in the family. The
Performa and WorkGroup Server variants included an internal CD-ROM and
generally a larger hard drive, while the AV and DOS variants respectifully
included the AV and DOS expansion cards.
My first 6100 system was obtained for free from a friend's work along with
my third IIci. I also got an AppleVision 14 monitor, AAUI Ethernet tranceiver,
keyboard and mouse with this system.
Initially the system only contained an additional 8mb of RAM to the 8mb on
the logic board, no CD-ROM, and a dead fan in the power supply. Swapping the 2x
4mb SIMMs for 2x 8mb SIMMs was trivial as was inserting the Apple 300i drive
that I purchased for $20 through eBay and was intending to put it in the now
unused LC630. Replacing the power supply fan was slightly more fiddly.
Since the AppleVision 14 Display has the HDI-45 combined video, Apple
Desktop Bus, sound and tv connector I decided to spend some money on two 6100
cases with motherboards for various parts since I do not have the required
adapter to use the monitor on a normal DB15 video connection.
I also managaged to get my hands on both a DOS Compatability Card, with the
'octopus' cable, and an AV card.
Mac OS 7.6.1 is currently running on this system although it might be
replaced by Mac OS 8.1 if additional RAM is aquired.
||pm6100-01.jpg, 1280x1024, 130KB
|A complete 6100/66 system with an AppleVision 14 Display, Apple Design Keyboard
and a Apple Desktop Bus Mouse II.
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|Two system units demonstrating two of the types of centre bezel, the third type
was for a caddy CD-ROM drive. The sticker next to the power button on the upper
unit is quite humourous.
||pm6100-03.jpg, 1280x1024, 129KB
|Rear of the system unit showing the power connections, kensinton security slot,
AAUI ethernet, SCSI, the HDI-45 port, serial printer, serial model, Apple
Desktop Bus, headphone, microphone and the reset and interrupt switches.
||pm6100-04.jpg, 1280x1024, 185KB
|With the cover removed it is evident why heat was a common issue with these
systems as everthing is so tightly packed together with the only fan being in
the power supply. Half covering the logic board is the DOS Compatability card.
||pm6100-06.jpg, 1280x1024, 271KB
|The DOS Compatibility Card itself. This has an Intel 486 DX2 CPU, its own 16MB
of RAM and even a soundblaster card (the little daughter board).
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|The rear of the system unit again however this time the AV Card is installed in
the expansion slot.
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|The AV Card provides S-Video input and output as well as an additional video
controller. This is faster than the onboard one as it has its own dedicated
||pm6100-09.jpg, 1024x768, 136KB
|The AV Card can actually be installed in any of the 6100, 7100 or 8100 series
computers. However in order to fit inside the 6100 chassis an adapter is