diff options
| author | Alejandro Soto <alejandro@34project.org> | 2022-09-25 17:47:26 -0600 |
|---|---|---|
| committer | Alejandro Soto <alejandro@34project.org> | 2022-09-25 17:47:26 -0600 |
| commit | 231f84b20e168afe36067b93bf30ed5e83f8e464 (patch) | |
| tree | c7ae15abe90c263496be0c821f8ada49291b47e5 /rtl/core/decode/decode.sv | |
| parent | b5f43ef8431532b1e0b498a88072fdfd2cf81ac9 (diff) | |
Implement ALU opcode decoding
Diffstat (limited to 'rtl/core/decode/decode.sv')
| -rw-r--r-- | rtl/core/decode/decode.sv | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/rtl/core/decode/decode.sv b/rtl/core/decode/decode.sv index f173529..57744e1 100644 --- a/rtl/core/decode/decode.sv +++ b/rtl/core/decode/decode.sv @@ -12,7 +12,8 @@ module core_decode writeback, branch, output ptr branch_offset, - output reg_num rd + output reg_num rd, + output alu_op data_op ); logic cond_undefined; @@ -35,15 +36,16 @@ module core_decode ); //TODO - alu_op op; reg_num rn; logic update_flags, restore_spsr, zero_fst, negate_fst, negate_snd, carry_in; logic data_writeback; reg_num data_rd; + alu_op data_group_op; core_decode_data group_data ( + .op(data_group_op), .rd(data_rd), .writeback(data_writeback), .* @@ -55,6 +57,7 @@ module core_decode branch = 0; writeback = 0; rd = 4'bxxxx; + data_op = 4'bxxxx; priority case(insn `FIELD_OP) inside `GROUP_B: begin @@ -69,6 +72,7 @@ module core_decode `GROUP_ALU: begin rd = data_rd; writeback = data_writeback; + data_op = data_group_op; end `INSN_MUL: ; |