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Extreme Systems impact acclerator card for LC
Posted by: AlpineRaven on 2016-09-04 07:20:49
Good morning, 

I have an Extreme Systems Impact accelerator card for LC which I am very keen to use in Macintosh Classic.

I dont have the drivers for it, I tried downloading this file from;

http://vintageapple.org/macdrivers/accel.shtml

down to;

Extreme Systems

  • Impact and Extender v1.22 (29 k)
  • Drivers for the Extreme Systems Impact and Extender 030 accelerator boards for the LC 1 and 2.
Each time I try download Impact and Extender v1.22, Stuffit cannot open that file at all. (I was using Version 11 in OSX and 6 in classic) - its not recognised file.

Thank you
Cheers

AP

See attached picture of the card

14088684_10154293361366226_3611551028077781927_n.jpg

Posted by: bibilit on 2016-09-04 09:18:42
I have an Extreme Systems Impact accelerator card for LC which I am very keen to use in Macintosh Classic.
How are you going to use a LC card in a Macintosh Classic ? 

Posted by: AlpineRaven on 2016-09-04 15:48:08
How are you going to use a LC card in a Macintosh Classic ? 
PDS slot? It does work in Mac CC as well

Cheers

AP

Posted by: bibilit on 2016-09-05 02:00:03
Ah ok, your first post didn't say Color

Posted by: jhorvath911 on 2017-01-06 10:57:20
Any chance that anyone can get the original file to work? Just dropped a new hard drive in my color classic and also am not able to unstuff that file with any version I've tried.

Posted by: Cubbie036 on 2022-09-10 22:42:31
Any one have the aforementioned Software? Every site I download it from seems to be same corrupt .sit file that can't be uncompressed.
Posted by: chrisrueckert on 2023-01-14 11:29:36
I have just received a CC with the accelerator card and will backup the system folder. Once that's done I'll post the files I suspect to enable the accelerator on Macintosh Garden.
Posted by: Phipli on 2023-01-14 11:41:36
I have just received a CC with the accelerator card and will backup the system folder. Once that's done I'll post the files I suspect to enable the accelerator on Macintosh Garden.
Excellent news 🙂 make sure you compress it in a way that preserves the resource fork!

So either Stuffit 5 or later (but not sitx), or wrapped in a mac binary or hqx or similar. Stuffit 4 and older files have a resource fork and get corrupted when you upload them. Shout if you need any advice, forgive me if this is all old news to you.
Posted by: chrisrueckert on 2023-01-15 12:37:20
Excellent news 🙂 make sure you compress it in a way that preserves the resource fork!

So either Stuffit 5 or later (but not sitx), or wrapped in a mac binary or hqx or similar. Stuffit 4 and older files have a resource fork and get corrupted when you upload them. Shout if you need any advice, forgive me if this is all old news to you.
Here's the control panel. I suspect this is what activates the accelerator. Let me know if it works.
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