Цитата:
It is a DEC "magic Qbus chip". We used to buy the DEC "Qbus Chip
Kit", but we did use the DC005 to talk to the bus (just not their DMA
chips). If you needed some other Qbus spare, I would probably have
it, but we used all of our DC005s in our product. I know some 3rd
party vendors used to use chips like the 72LS240 to interface to the
Qbus, but I doubt they are pin-compatible nor even function-compatible
with a DC005. Of course a '240 won't have the same bus loading, etc.,
but for a single-backplane system, you'd probably never know the
difference.