http://www.willegal.net/blog/?p=3649 computers, trains, wargames, fish, railroads and more Thu, 19 Mar 2015 11:08:19 +0000 hourly 1 http://wordpress.org/?v=4.1.1 http://www.willegal.net/blog/?p=3649&cpage=1#comment-4599 Mon, 14 Jan 2013 11:02:51 +0000 http://www.willegal.net/blog/?p=3649#comment-4599 Nope – bus is hard wired – front slot must be front panel, 2nd card the CPU, 3rd card DBB (data bus buffer), 4th card INPUT – last 4 slots on 8H are hard wired memory slots, each supporting 1K. The difference on the 8B, is that there is an additional memory interface card between the INPUT and the four 4K Memory slots.

]]> http://www.willegal.net/blog/?p=3649&cpage=1#comment-4598 Mon, 14 Jan 2013 00:50:26 +0000 http://www.willegal.net/blog/?p=3649#comment-4598 To be honest, I haven’t looked at the Scelbi schematics since it was new. But wasn’t the backplane wired as a processor Bus. So then the cards can be plugged into any slot ? Couldn’t the Sram card be swapped aorund to the front slot to let you troublehsoot the problem ?

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