The traditional co-issued pipeline can work as a single vector4 unit, or as seperated vector3 and scalar units. NV40's pipelines can also work in a vector2 vector2 configuration. Dual- and co-issue combined, an NV40 pipe can execute up to four instructions – while having a single all-purpose arithmetic unit only. For explanatory reasons, we will continue to talk about Unit 1 and 2.

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