tree c4b9467b060b3f7c5b00d36e60db0b69855ec1c8
parent 9ee3c57e460b15acb8e1503e97fc35aa6eed0661
author Marcin Kościelnicki <marcin@symbioticeda.com> 1574045276 +0100
committer Marcin Kościelnicki <mwk@0x04.net> 1574121658 +0100

xilinx: Add simulation models for MULT18X18* and DSP48A*.

This adds simulation models for the following primitives:

- MULT18X18 and MULT18X18S (Virtex 2*, Spartan 3)
- MULT18X18SIO (Spartan 3E, Spartan 3A)
- DSP48A (Spartan 3A DSP) — implemented in terms of DSP48A1
- DSP48A1 (Spartan 6)