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// OpenSPARC T2 Processor File: n2_revid_cust.v
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module n2_revid_cust ( jtag_revid_in, mask_minor, jtag_revid_out, spc_revid_out);
input [3:0] jtag_revid_in;
output [3:0] jtag_revid_out;
output [3:0] spc_revid_out;
wire [3:0] jtag_vector_metal_01;
wire [3:0] jtag_vector_metal_02;
wire [3:0] jtag_vector_metal_03;
wire [3:0] jtag_vector_metal_04;
wire [3:0] jtag_vector_metal_05;
wire [3:0] jtag_vector_metal_06;
wire [3:0] jtag_vector_metal_07;
wire [3:0] jtag_vector_metal_08;
wire [3:0] jtag_vector_metal_09;
wire [3:0] jtag_vector_metal_10;
wire [3:0] jtag_vector_metal_11;
wire [3:0] mask_vector_metal_01;
wire [3:0] mask_vector_metal_02;
wire [3:0] mask_vector_metal_03;
wire [3:0] mask_vector_metal_04;
wire [3:0] mask_vector_metal_05;
wire [3:0] mask_vector_metal_06;
wire [3:0] mask_vector_metal_07;
wire [3:0] mask_vector_metal_08;
wire [3:0] mask_vector_metal_09;
wire [3:0] mask_vector_metal_10;
wire [3:0] mask_vector_metal_11;
// How to set the versions:
// This custom controls the minor revision field of the HVER register
// (via spc_revid_out[3:0]) and the JTAG version number
// (via jtag_revid_out[3:0]).
// The minor revision field indicates the metal mask revision number
// The JTAG version number is a unique value for each tapeout.
// If a tapeout affects all metal layers, then
// - the inputs (spec_revid_in[3:0], jtag_revid_in[3:0]) can be set
// to the values required of the version registers
// - the "metal_nn" masks in this custom can be set to all zeroes
// If a tapeout does not affect all metal layers, then
// - the inputs should not be changed from the previous tapeout
// - the "metal_nn" masks corresponding to the layer being changed
// should be set to flip the bits (via XOR) in the input
// vectors (and other metal masks) to generate the new
// Paul Jordan 01/25/2007
// The following comments were made by Hunter Donahue, but they
////////////////////////////////////////////////////////////////////////
// For the following JTAG_VECTOR and MASK_VECTOR the user
// must assign the vector to either of two values: (4'b0000, 4'b1111) (only one of these two values)
// We start the initial programming to all be 4'0000 for (TO 1.0) Hunter Donahue July 11, 2005
////////////////////////////////////////////////////////////////////////
// The preceeding comments were made by Hunter Donahue, but they
assign jtag_vector_metal_01 = 4'b0000;
assign jtag_vector_metal_02 = 4'b0000;
assign jtag_vector_metal_03 = 4'b0111; // set for TO 2.2 to change input 4'b0011 to output 4'b0100
assign jtag_vector_metal_04 = 4'b0000;
assign jtag_vector_metal_05 = 4'b0000;
assign jtag_vector_metal_06 = 4'b0000;
assign jtag_vector_metal_07 = 4'b0000;
assign jtag_vector_metal_08 = 4'b0000;
assign jtag_vector_metal_09 = 4'b0000;
assign jtag_vector_metal_10 = 4'b0000;
assign jtag_vector_metal_11 = 4'b0000;
assign mask_vector_metal_01 = 4'b0000;
assign mask_vector_metal_02 = 4'b0000;
assign mask_vector_metal_03 = 4'b0011; // set for TO 2.2 to change input 4'b0001 to output 4'b0010
assign mask_vector_metal_04 = 4'b0000;
assign mask_vector_metal_05 = 4'b0000;
assign mask_vector_metal_06 = 4'b0000;
assign mask_vector_metal_07 = 4'b0000;
assign mask_vector_metal_08 = 4'b0000;
assign mask_vector_metal_09 = 4'b0000;
assign mask_vector_metal_10 = 4'b0000;
assign mask_vector_metal_11 = 4'b0000;
assign jtag_revid_out = jtag_revid_in ^
jtag_vector_metal_01 ^ jtag_vector_metal_02 ^ jtag_vector_metal_03 ^ jtag_vector_metal_04 ^
jtag_vector_metal_05 ^ jtag_vector_metal_06 ^ jtag_vector_metal_07 ^ jtag_vector_metal_08 ^
jtag_vector_metal_09 ^ jtag_vector_metal_10 ^ jtag_vector_metal_11;
assign spc_revid_out = mask_minor ^
mask_vector_metal_01 ^ mask_vector_metal_02 ^ mask_vector_metal_03 ^ mask_vector_metal_04 ^
mask_vector_metal_05 ^ mask_vector_metal_06 ^ mask_vector_metal_07 ^ mask_vector_metal_08 ^
mask_vector_metal_09 ^ mask_vector_metal_10 ^ mask_vector_metal_11;
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