how to solve this "single tri-state driver " DC warning, thanks.

Warning: Net 'out_byte2_t[0]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[1]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[2]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[3]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[4]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[5]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[6]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte2_t[7]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[0]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[1]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[2]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[3]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[4]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[5]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[6]' has a single tri-state driver. (LINT-63)
Warning: Net 'out_byte1_t[7]' has a single tri-state driver. (LINT-63

A warning is a warning, not an error. You may want to ignore it. On the other hand, a single tri-state driver in a net makes no sense, supposed it's no port pin. DC is just asking you, if this is intentionally or e.g. indicates an incomplete design.