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Power Macintosh 6100 PC Compatibility (DOS) Card

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Hi all,

 

I've been messing around with my Power Macintosh 6100 DOS compatibility card and have run into an issue finding an image of the CD-ROM that allegedly includes some additional drivers that were not included on the floppies (or were included on floppy in some versions?). Information I have found thus far online has been a bit unclear. There might not even be a CD, but Apple's own documentation seems to reference one.

 

For example, the following post shows no CD in the box contents, but seems to include many more floppies than I've found imaged online.

 

I have the "official" set of 1.6.4 and 2.1.7f from Apple, but they don't seem to include enough of what I need.

 

I have sound working via generic Soundblaster 16 stuff, mouse is OK in Windows and DOS (used generic drivers). My big challenge is in the video department. I can't seem to find compatible VESA drivers for the video card. I've even tried various versions of UniVBE with no luck. Certain versions detect it, others won't detect. The ones that detect it have crashed in random and weird ways when I've tried to use them. The card is apparently a Chips and Technologies 82c450 (sometimes nicknamed the 450), I've found sites that reference the chip on this card as a 65xxx but I can't seem to get 65535 or other drivers to work either. I also can't seem to find Windows 3.1 or 98 drivers. I was, however, able to get Windows 95 going in 640x480 at 256 colors (but nothing higher).

 

I wanted to go spelunking around the depths of the Internet Archive, but can't seem to figure out what C&T's domain name was to see if they had some drivers available. I've also tried finding other systems that utilized this video chip and had some success finding files, however none of them worked when I tried using them. (Specifically the Toshiba LC110

 

Any help would be appreciated.

Thanks!

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2 hours ago, dcr said:

C&T had chips.com in 1997.  Can't tell if they had a different or the same domain name prior to that.

 

https://web.archive.org/web/19970606174052/http://chips.com/

This is awesome, thank you. I am already on the right track based solely on this info, will try installing the drivers and let you know.

 

2 hours ago, MOS8_030 said:

Here's an (old) web page that has a lot of info about the Apple DOS cards.

http://www.oliver-schubert.com/DOScard/DOScard.html#appledrivers

Great site, I've been there many times. The drivers they link to are (sadly) only two floppies, one for Mac and one for PC. In fact, the link on the site was broken when Apple removed their legacy support pages. One suitable mirror link (for future Googlers) is:

http://mirror.macintosharchive.org/download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English-North_American/DOS-Windows/DOS_and_PC_Compatibility_SW/

 

Thanks again guys, this is all great info.

Edited by EagleTG
Adding words

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I'll have to go digging for the video drivers tonight. Whats on-board was not custom in any way, it uses generic Chips & Technologies drivers. Intel bought them out in 1997 and later developed the i740 AGP graphics chip (which uses C&T drivers in Windows 3.1x!) and the Intel 810 chipset integrated video. I think the card's BIOS was VBE 1.2 compatible out of the box, so the generic SVGA drivers for Windows 3.1x (google search for SVGA.EXE) should work in a pinch. DOS software using VBE should work without UniVBE installed.

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Attached are the video driver files off the original disks included with the DOS card. The INF files for the Windows 3.1x drivers identify the video chip as a "CHIPS 450". Disk 1 has the Windows 3.1x drivers and Disk 2 has drivers for various DOS programs including the VESA BIOS Extension driver. Looks like it only supports 640x480 at 256 colors and 800x600 or 1024x768 at 16 colors.

6100 DOS Card Video Driver Disks.zip

Edited by NJRoadfan

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13 hours ago, NJRoadfan said:

Attached are the video driver files off the original disks included with the DOS card. The INF files for the Windows 3.1x drivers identify the video chip as a "CHIPS 450". Disk 1 has the Windows 3.1x drivers and Disk 2 has drivers for various DOS programs including the VESA BIOS Extension driver. Looks like it only supports 640x480 at 256 colors and 800x600 or 1024x768 at 16 colors.

6100 DOS Card Video Driver Disks.zip

These are awesome, and exactly what I needed. THANK YOU!

 

I wonder why they weren't (or didn't seem to be) in any of the other disk images that I downloaded?

 

You are the best!

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Likely some silly licensing restrictions. Apple offers their DOS side utility software for download, but not the video and sound drivers. The latter are easily found though since its standard Creative Labs Soundblaster 16 drivers. C&T never offered Windows 95 drivers for the 82c450, so the built-in driver is the best you are going to get.

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Above is the contents of the two video driver disks the card came with. I didn't bother imaging them as I can't guarantee they are untouched disks as they have RESOURCE.FRK folders and FINDER.DAT files all over them (albeit with 1993 creation dates) from being read on a Mac with PC Exchange but not write protected.

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I have multiple copies of original DOS Compatibility disks around from the two 6100 DOS Compatible models I have. I would be more than happy to make images of them for you this weekend.

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Hi LaPorta, the zip file that NJRoadfan posted had everything I needed. Just in time, too. I had an exhibit at VCF East that starred my PowerMac 6100 and DOS card. 

 

Thanks for the offer. I have what I needed, but maybe it’s worth posting what you have just on the off-chance it differs from the other stuff that’s abaialble. 

 

Really appreciate all of the assistance!!

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I ran (well.. walked I suppose) my Dos Compatibility 6100 card with Windows 95. Between the PC Setup 1.6.4 disks (2 of them I believe) and Windows 95 install CD everything worked as i’d expected it to. This was with the Mac running 8.1.

 

Were you trying Windows 3.1 or just DOS? Just curious in case I try to go to something more responsive in the future if I ever put the card back in.

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