3 ms·
Looking at the complexity and area of hardware floating point, I often wonder why we don't see more unified combined integer+floating point units, like done in
by em3rgent0rdr 10mo ago
Looking at the complexity and area of hardware floating point, I often wonder why we don't see more unified combined integer+floating point units, like done in the R4200 [1], which reused most of the integer datapath while just adding a smaller extra smaller 12-bit datapath for the exponent.
[1] https://en.wikipedia.org/wiki/R4200 https://en.wikipedia.org/wiki/R4200
- bobmcnamara 10mo agoThe integer pipeline is often needed for address calculation near the same time as the floating point pipeline. The R4200 FPU performance suffered for this reason.