at the file "oc8051_sp.v"
output 7:0 sp_out, sp_w;
reg 7:0 sp_out, sp_w;
always @(sp or ram_wr_sel) begin // // push if (ram_wr_sel==`OC8051_RWS_SP) sp_w = sp + 8'h01; else sp_w = sp;
end
but seem possible the "sp_w" is never used.
