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

Subversion Repositories mlite

[/] [mlite/] [trunk/] [vhdl/] [pc_next.vhd] - Diff between revs 43 and 47

Rev 43	Rev 47
Line 34...	Line 34...
`pc_next: process(clk, reset_in, pc_new, take_branch, pause_in,`	`pc_next: process(clk, reset_in, pc_new, take_branch, pause_in,`
`opcode25_0, pc_source, pc_reg)`	`opcode25_0, pc_source, pc_reg)`
`variable pc_inc, pc_next : std_logic_vector(31 downto 2);`	`variable pc_inc, pc_next : std_logic_vector(31 downto 2);`
`begin`	`begin`
`pc_inc := bv_increment(pc_reg); --pc_reg+1`	`pc_inc := bv_increment(pc_reg); --pc_reg+1`
`pc_next := pc_reg;`
`case pc_source is`	`case pc_source is`
`when from_inc4 =>`	`when from_inc4 =>`
`if pause_in = '0' then`	`if pause_in = '0' then`
`pc_next := pc_inc;`	`pc_next := pc_inc;`
	`else`
	`pc_next := pc_reg;`
`end if;`	`end if;`
`when from_opcode25_0 =>`	`when from_opcode25_0 =>`
`pc_next := pc_reg(31 downto 28) & opcode25_0;`	`pc_next := pc_reg(31 downto 28) & opcode25_0;`
`when from_branch \| from_lbranch =>`	`when others => --from_branch \| from_lbranch =>`
`if take_branch = '1' then`	`if take_branch = '1' then`
`pc_next := pc_new;`	`pc_next := pc_new;`
`else`	`else`
`pc_next := pc_inc;`	`pc_next := pc_inc;`
`end if;`	`end if;`
`when others =>`
`end case;`	`end case;`
`if reset_in = '1' then`	`if reset_in = '1' then`
`pc_next := ZERO(31 downto 2);`	`pc_next := ZERO(31 downto 2);`
`end if;`	`end if;`