Intel 386 - Manual (Page 537)

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
A-8
Table A-3 defines the abbreviations used in Table A-4 to describe the pin states.
Table A-3. Pin State Abbreviations
Abbreviation Description
1 Output driven to V
CC
0 Output driven to V
SS
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