URL https://opencores.org/ocsvn/next186/next186/trunk

Subversion Repositories next186

[/] [next186/] [trunk/] [Next186_ALU.v] - Diff between revs 12 and 16

Rev 12	Rev 16
Line 70...	Line 70...
`//`	`//`
`//`	`//`
`// FLAGS: X X X X OF DF IF TF \| SF ZF X AF X PF X CF`	`// FLAGS: X X X X OF DF IF TF \| SF ZF X AF X PF X CF`
`//`	`//`
`// 09Feb2013 - fixed DAA,DAS bug`	`// 09Feb2013 - fixed DAA,DAS bug`
	`// 07Jul2013 - fixed OV/CY flags for IMUL`
`//////////////////////////////////////////////////////////////////////////////////`	`//////////////////////////////////////////////////////////////////////////////////`
`timescale 1ns / 1ps	`timescale 1ns / 1ps

`module Next186_ALU(`	`module Next186_ALU(`
`input [15:0] RA,`	`input [15:0] RA,`
Line 213...	Line 214...
`FOUT[0] = LONIBBLE;`	`FOUT[0] = LONIBBLE;`
`FOUT[4] = LONIBBLE;`	`FOUT[4] = LONIBBLE;`
`end`	`end`
`5'b10000, 5'b10001 : begin // MUL, IMUL`	`5'b10000, 5'b10001 : begin // MUL, IMUL`
`ALUOUT = STAGE[1] ? MUL[31:16] : MUL[15:0];`	`ALUOUT = STAGE[1] ? MUL[31:16] : MUL[15:0];`
`FOUT[0] = WORD ? !zero : \|MUL[15:8];`	`FOUT[0] = WORD ? !zero \| (ALUOP[0] & MUL[15]): \|MUL[15:8] \| (ALUOP[0] & MUL[7]); //07Jul2013 - fixed OV/CY flags for IMUL`
`FOUT[11] = FOUT[0];`	`FOUT[11] = FOUT[0];`
`end`	`end`
`5'b11001: begin // flag op`	`5'b11001: begin // flag op`
`FOUT[11:8] = FIN[11:8];`	`FOUT[11:8] = FIN[11:8];`
`FOUT[7] = FIN[7];`	`FOUT[7] = FIN[7];`