/**************************************************************************** * * * VERILOG HIGH-LEVEL DESCRIPTION OF THE TI 74182 CIRCUIT * * * * Function: Carry Lookahead Generator * * * * Written by: Mark C. Hansen * * * * Last modified: Dec 10, 1997 * * * ****************************************************************************/ module Circuit74182 (CN, PB, GB, PBo, GBo, CNX, CNY, CNZ); input[3:0] PB, GB; input CN; output PBo, GBo, CNX, CNY, CNZ; TopLevel74182 Ckt74182 (CN, PB, GB, PBo, GBo, CNX, CNY, CNZ); endmodule /* Circuit74182 */ /*************************************************************************/ module TopLevel74182 (CN, PB, GB, PBo, GBo, CNX, CNY, CNZ); input[3:0] PB, GB; input CN; output PBo, GBo, CNX, CNY, CNZ; not CNBgate(CNB, CN); and PB0GB0gate(PB0GB0, PB[0], GB[0]); and CNBGB0gate(CNBGB0, CNB, GB[0]); and PB1GB1gate(PB1GB1, PB[1], GB[1]); and PB0GB01gate(PB0GB01, PB[0], GB[0], GB[1]); and CNBGB01gate(CNBGB01, CNB, GB[0], GB[1]); and PB2GB2gate(PB2GB2, PB[2], GB[2]); and PB1GB12gate(PB1GB12, PB[1], GB[1], GB[2]); and PB0GB012gate(PB0GB012, PB[0], GB[0], GB[1], GB[2]); and CNBGB012gate(CNBGB012, CNB, GB[0], GB[1], GB[2]); and PB3GB3gate(PB3GB3, PB[3], GB[3]); and PB2GB23gate(PB2GB23, PB[2], GB[2], GB[3]); and PB1GB123gate(PB1GB123, PB[1], GB[1], GB[2], GB[3]); and GB0123gate(GB0123, GB[0], GB[1], GB[2], GB[3]); or PBogate(PBo,PB[0],PB[1],PB[2],PB[3]); or GBogate(GBo,PB3GB3,PB2GB23,PB1GB123,GB0123); nor CNZgate(CNZ,PB2GB2,PB1GB12,PB0GB012,CNBGB012); nor CNYgate(CNY,PB1GB1,PB0GB01,CNBGB01); nor CNXgate(CNX,PB0GB0,CNBGB0); endmodule /* TopLevel74182 */