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

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_alu.v] - Diff between revs 802 and 804

Rev 802	Rev 804
Line 167...	Line 167...
`endif	`endif
`endif	`endif
`assign {cy_sum, result_sum} = (a + b_mux) + carry_in;`	`assign {cy_sum, result_sum} = (a + b_mux) + carry_in;`
`// Numbers either both +ve and bit 31 of result set`	`// Numbers either both +ve and bit 31 of result set`
`assign ov_sum = ((!a[width-1] & !b_mux[width-1]) & result_sum[width-1]) \|`	`assign ov_sum = ((!a[width-1] & !b_mux[width-1]) & result_sum[width-1]) \|`
	`ifdef OR1200_IMPL_SUB
	`// Subtract larger negative from smaller positive`
	`((!a[width-1] & b_mux[width-1]) & result_sum[width-1] &`
	alu_op==`OR1200_ALUOP_SUB) \|
	`endif
`// or both -ve and bit 31 of result clear`	`// or both -ve and bit 31 of result clear`
`((a[width-1] & b_mux[width-1]) & !result_sum[width-1]);`	`((a[width-1] & b_mux[width-1]) & !result_sum[width-1]);`
`assign result_and = a & b;`	`assign result_and = a & b;`

`//`	`//`