Miscellaneous SSI Models

This page contains miscellaneous SSI models available in VHDL not associated with a specific vendor.

Generic Pullup Models - a compressed tar file: Description : Generic pullup model for N outputs; General Taxonomy Level : RTL; Created by : Tom Rust and Don Day (RGB Spectrum); Email: tom@rgb.com, don@rgb.com
TTL Library Part I - a VHDL file (Here): -- Copyright Mentor Graphic Corporation 1991.; Description : This file contains the following synthesizable components; 1) Clock Generator; 2) D Flip-Flop; 3) ls138 : 3 to 8 demultiplexer; 4) ls139 : dual 2 to 4 demultiplexer; 5) ls153 : dual 4 to 1 data selector; 6) ls163 : syncronous 4 bit counter; 7) ls169 : synchronous up/down counter; 8) ls175 : quad d-ffs; 9) ls181 : arithmetic logic unit; General Taxonomy Level : RTL; Created by : T. Ohtsuka, Mentor Graphic Corporation 1991; Email: tootsuka@ss.titech.ac.jp
TTL Library Part II - a VHDL file (Here): -- Copyright Mentor Graphic Corporation 1991.; Description : This file contains the following synthesizable components; 1) bufif1_0 : 3 state bufif1 with no delay; 2) bufif1_5 : 3 states bufif1 with 5 ns delay; 3) bufif0_0 : 3 state bufif0 with no delay; 4) bufif0_5 : 3 states bufif0 with 5 ns delay; 5) notif1_0 : 3 state inverter if 1 with no delay; 6) notif1_5 : 3 states inverter_if1 with 5 ns delay; 7) notif0_0 : 3 states inverter if 0 with no delay; 8) notif0_5 : 3 states inverter if 0 with 5 ns delay; 9) ls194 : 4 bits shift register; 10) ls257 : quadruple 2 line to 1 line data selector/multiplexers with 3 state outputs; 11) ls374 : octal 3 state d-ffs; General Taxonomy Level : RTL; Created by : T. Ohtsuka, Mentor Graphic Corporation 1991; Email: tootsuka@ss.titech.ac.jp
TTL Library Part III - a VHDL file (Here): -- Copyright Mentor Graphic Corporation 1991.; Description : This file contains the following synthesizable components; 1) ls151 : 8 to 1 data selector; 2) ls377 : 8 bit d-ffs; 3) ls540 : octal 3 state buffer ( inverted ); 4) ls541 : octal 3 state buffer; 5) ls157 : quad 2 to 1 data selector; 6) rsff; 7) ls04 : inverter; 8) ls00 : 2 input nand; 9) ls02 : 2 input nor; 10) ls08 : 2 input and; 11) ls32 : 2 input or; 12) ls10 : 3 input nand; 13) ls11 : 3 input and; 14) ls27 : 3 input nor; 15) ls20 : 4 input nand; 16) ls21 : 4 input and; 17) ls30 : 8 input nand; General Taxonomy Level : RTL; Created by : T. Ohtsuka, Mentor Graphic Corporation 1991; Email: tootsuka@ss.titech.ac.jp

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