diff options
Diffstat (limited to 'rtl/core/decode/decode.sv')
| -rw-r--r-- | rtl/core/decode/decode.sv | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/rtl/core/decode/decode.sv b/rtl/core/decode/decode.sv index fad7edc..a202694 100644 --- a/rtl/core/decode/decode.sv +++ b/rtl/core/decode/decode.sv @@ -3,17 +3,16 @@ module core_decode ( - input word insn, - input psr_flags flags, - - output logic execute, - undefined, - writeback, - update_flags, - branch, - output ptr branch_offset, - output reg_num rd, - output alu_op data_op + input word insn, + input psr_flags flags, + + output logic execute, + undefined, + writeback, + update_flags, + branch, + output ptr branch_offset, + output alu_decode alu ); logic cond_undefined; @@ -36,17 +35,14 @@ module core_decode ); //TODO - reg_num rn; logic restore_spsr; logic data_writeback, data_update_flags; - reg_num data_rd; - alu_op data_group_op; + alu_decode data_alu; core_decode_data group_data ( - .op(data_group_op), - .rd(data_rd), + .decode(data_alu), .writeback(data_writeback), .update_flags(data_update_flags), .* @@ -58,23 +54,21 @@ module core_decode branch = 0; writeback = 0; update_flags = 0; - rd = 4'bxxxx; - data_op = 4'bxxxx; + alu = {($bits(alu)){1'bx}}; priority casez(insn `FIELD_OP) `GROUP_B: begin branch = 1; if(branch_link) begin - rd = `R14; + alu.rd = `R14; writeback = 1; //TODO: Valor de LR end end `GROUP_ALU: begin - rd = data_rd; + alu = data_alu; writeback = data_writeback; - data_op = data_group_op; update_flags = data_update_flags; end |