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Does anyone here actually have a DoubleUp Board?

olePigeon

68040
Was watching old Computer Chronicles episodes, and they had a fun segment with Stuffit and DiskDoubler.  I had no idea that there was a hardware option for DiskDoubler.  Does anyone here have one?  It sure looks like fun.



 
9 hours ago, olePigeon said:

Was watching old Computer Chronicles episodes, and they had a fun segment with Stuffit and DiskDoubler.  I had no idea that there was a hardware option for DiskDoubler.  Does anyone here have one?  It sure looks like fun.

Yup

 
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DoubleUp card
I want one of those. Something for my eBay searches then.

I had never heard of cards to aid disk compression/decompression.

DiskDoubler was my preferred file compression utility back when I carried around diskettes everywhere with me.

 
@LaPorta Yeah, it allowed for exceptionally fast compression and expansion.  You could even set up partitions (or just the whole drive, apparently) that would automatically compress and decompress everything as you used them on the fly. Not quite real-time, but fast enough.

It had intrigued me as an actually very useful card for archiving software. I had already sort of standardized on Stuffit, but I never new that DiskDoubler used an open compression standard. That seems like a better alternative since theoretically a DD compressed file can be reverse engineered and even decompressed on a PC without any proprietary  software.

 
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Never seen that card on ebay. I think mine came from a university haul a very long time ago. Don't think I ever used it.

 
Not open, just one that had an available hardware chip. Stac marketed accelerator cards for use with their Stacker disk compression software for ISA and Microchannel slots. Seems that was extended to NuBus as well.

 
@NJRoadfan Ah, OK.  I misunderstood what they said in the show.  In any event, it seems like a more universal compression that's readily available on early Macintosh computers.  DiskDoubler was pretty prevalent.  I think it was the most popular until Stuffit came around.

 
No worries.  At least I know what they look like now.  Had I known a few years ago, I bet I could have found one in the box o' cards at WeirdStuff.

 
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