Damus
Fabian Giesen · 2w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq0cq07ulfyc7y2l8rczk9s36g8j65tq3m6xk9us8hr3ua4ktfmaqq05h6ty this was known when the high end IBM System/360 models were designed in the late 60s
Fabian Giesen profile picture
@nprofile1q... The specific thing I'm alluding to is that the serial model of "fetch operands from accumulator/memory/register file, do operation, write back result" and once you start pipelining (which started shipping in the mid-late 60s, the famous example being the CDC 7600) you need to figure out something better.
1
Wolf480pl · 2w
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqpu3ryltaaqjym9gj5fpcv623edtfh2vuvrtcd8pz75p6nlyt0nrqwf22w0 right, so you have a "bypass network" that somehow forwards values from ALU outputs straight to ALU inputs if it detects it's the same register But how do you tell the CPU that this val...