diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 48 |
1 files changed, 45 insertions, 3 deletions
@@ -82,8 +82,8 @@ The right shift is also inverted. - left shift logical -> rigth shift logical -The dumbed-down netlist format ------------------------------- +The dumbed-down netlist format (OLD FORMAT) +------------------------------------------- The C simulator does NOT read a properly formatted netlist, but only a file representing it written in a simple format, that can be parsed with only calls @@ -142,6 +142,48 @@ be assigned to a constant-type variable that can be counted among the inputs (or whatever - anyway, no need to recalculate them at every iteration). +The dumbed-down netlist format (NEW FORMAT) +------------------------------------------- + +<var count> +[for each variable] + <var size> <var name> +<input list size> [for each input <input var id>] +<out list size> [for each input <output var id>] +<register list size> +[for each register] + <register destination variable> <register source variable> +<ram list size> +[for each ram] + <destination variable> <addr size> <word size> <read addr var> + <write enable var> <write addr var> <data var> +<equation list size> +[for each equation] + <destination variable> <equation type> <args...> + +Equation types : +ID DESCR ARGS +-- ----- ---- +0 Copy var_id +1 Not var_id +2 Binop op_id var_a_id var_b_id +3 Mux var_a_id var_b_id +4 ROM addr_size word_size write_addr_var_id +5 Concat var_a var_b +6 Slice begin end var_id +7 Select number var_id + +Operators : +0 OR +1 XOR +2 AND +3 NAND + +Constant variables are standardized so that their name (eg. $00101) +gives the value of the constant, therefore there is no need to write a constant +list in the program file. + + The Input/Output format ----------------------- @@ -173,7 +215,7 @@ the name of the variable that is read from the ROM. For example, if we have : which is a possible output for the MiniJazz compiler, and if the simulator is provided with the command-line argument : -rom decode7 path/to/decode7.rom -then the compiler will detect the prefix `decode7` in the variable name +then the simulator will detect the prefix `decode7` in the variable name decode7_128, and use the ROM from the file specified on the command line. Suggested format for the ROM files : |