diff options
Diffstat (limited to 'eater_cpu/eater_decoder.sv')
| -rw-r--r-- | eater_cpu/eater_decoder.sv | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/eater_cpu/eater_decoder.sv b/eater_cpu/eater_decoder.sv index 53cc39c..ba7cf16 100644 --- a/eater_cpu/eater_decoder.sv +++ b/eater_cpu/eater_decoder.sv @@ -42,9 +42,11 @@ always @(posedge clk_i) begin INIT: next_state = PC_to_MAR; - PC_to_MAR: next_state = MEM_to_INS_and_PC_inc; + PC_to_MAR: next_state = MEM_to_INS; - MEM_to_INS_and_PC_inc: next_state = insdep_state(); + MEM_to_INS: next_state = PC_inc; + + PC_inc: next_state = insdep_state(); LDA_INS_to_MAR: next_state = LDA_MEM_to_A; LDA_MEM_to_A: next_state = PC_to_MAR; @@ -82,9 +84,11 @@ always_comb begin internal_flags.PC_out = 1; internal_flags.MAR_in = 1; end - MEM_to_INS_and_PC_inc: begin + MEM_to_INS: begin internal_flags.RAM_out = 1; internal_flags.INS_in = 1; + end + PC_inc: begin internal_flags.PC_count = 1; end |