Intel 386 User Manual page 537

Intel386™ EX EMBEDDED MICROPROCESSOR USER'S MANUAL
Table A-3 defines the abbreviations used in Table A-4 to describe the pin states.
A-8
Table A-3. Pin State Abbreviations
Abbreviation
1 Output driven to V
0 Output driven to V
Z Output floats
Q Output remains active
X Output retains current state
WH Pin floats and has a temporary weak
pull-up
WL Pin floats and has a temporary weak
pull-down
Description
CC
SS