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@binarydinosaurs.co.uk

#positronJapes The morass grows as a 6th pod enters the fray so I can see what status the GPIB is returning to the CPU.

@binarydinosaurs.co.uk

There’s only 1 data bus on this machine but it’s buffered in 5 different places through 74LS244 and 74LS245 drivers, and these drivers have a habit of expiring.

Tom Stepleton

@stepleton.bsky.social

The iron rule of big logic analysers is that, invariably, just one more pod is definitely going to cut it.

Binary Dinosaurs

@binarydinosaurs.co.uk

Hahaha yep. There’s a weakness with the 16555D acquisition cards though - they only allow 25 labels, so to have probes on both ends of the GPIB I need to sacrifice some status and MMU addressing 😄

16/10/26, 5:42 pm0 reposts1 like

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