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In a message dated 3/8/2007 2:05:22 P.M. Central Standard Time, _patrick.okeefe @ WAMU.NET_ (mailto:[EMAIL PROTECTED]) writes:
I remember 3 different BPSloaders - 3-card, 7-card, and 12-card  versions.
There very well could have been a 6-card loader, too.

I may have had a brain check. I thought it was 6, but it must have been 7. 3 seems like too few. And it was all too many decades ago.
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I remember seeing a loader that consisted of only two cards, once. The second card was a channel program that read length/address information into a third CCW, ran it and TIC'd back to the beginning again.

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