Zenith Z-100 PC series Service Manual page 82

Page
2-5
Configuration
Table 2-4:
JUMPER
J204
J205
J206
Jumpers J204, J205, and J206 Settings
DEFINTION
Used to determine the base parallel port address. Settings
are as follows:
Pins 1 and 2 jumpered
=
378H
Pins 2 and 3 jumpered
=
278H
Used to enable the parallel port. Settings are as follows:
ON
=
Parallel port enabled
OFF
=
Parallel port disabled
Should be OFF (unjumpered) for RFI reasons.