diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/rtl/keywrap.v | 18 | ||||
| -rw-r--r-- | src/tb/tb_keywrap.v | 3 |
2 files changed, 19 insertions, 2 deletions
diff --git a/src/rtl/keywrap.v b/src/rtl/keywrap.v index 885578b..6a28133 100644 --- a/src/rtl/keywrap.v +++ b/src/rtl/keywrap.v @@ -47,12 +47,28 @@ module keywrap( input wire we, // Data ports. - input wire [7 : 0] address, + input wire [(ASPACE - 1) : 0] address, input wire [31 : 0] write_data, output wire [31 : 0] read_data, output wire error ); + //---------------------------------------------------------------- + // External parameters + //---------------------------------------------------------------- + // Since $clog2() is not supported by all tools, and constant + // functions are not supported by some other tools we need to + // do the size to number of bits calculation by hand. + // 8192 bytes = 2048 32 bit words. This requires 11 bits. + // We need additional space for control and status words. But + // since we have filled the address space, we need another MSB + // in the address - 12 bits. + // + // 0x000 - 0x7ff are for control and status. + // 0x800 - 0xfff are for data storage + parameter ASPACE = 12; + localparam MEM_SPACE = (ASPACE / 2); + //---------------------------------------------------------------- // Internal constant and parameter definitions. diff --git a/src/tb/tb_keywrap.v b/src/tb/tb_keywrap.v index 412bdb2..c53790b 100644 --- a/src/tb/tb_keywrap.v +++ b/src/tb/tb_keywrap.v @@ -80,6 +80,7 @@ module tb_keywrap(); localparam ADDR_R_DATA0 = 8'h80; localparam ADDR_R_DATA127 = 8'hff; + localparam DUT_ASPACE = 12; //---------------------------------------------------------------- // Register and Wire declarations. @@ -95,7 +96,7 @@ module tb_keywrap(); reg tb_reset_n; reg tb_cs; reg tb_we; - reg [7 : 0] tb_address; + reg [(DUT_ASPACE - 1) : 0] tb_address; reg [31 : 0] tb_write_data; wire [31 : 0] tb_read_data; wire tb_error; |