Settings (Assy Nos. 000181-001, 000181-021, 000336-001, and 000336-021)
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Jumper/Switch Setting Function
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J1 Open connectors on left Serial interface COM1 IRQ4 (default)
Open connectors on right Serial interface COM2 IRQ3
J2 Open connectors on left Primary diskette controller address
(default)
Open connectors on right Secondary diskette controller address
SW1-1 * ON Enable fixed disk drive
OFF Disable fixed disk drive
SW1-2 ON Enable parallel interface (default)
OFF Disable parallel interface
SW1-3 ** ON Enable serial interface (default)
OFF Disable serial interface
SW1-4 OFF Reserved
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* SW1-1 reserved on Assy No. 000181 boards.
** SW1-3 reserved on Assy No. 000181-001 (all Revisions) and
Assy No. 000336-001 Revision P or earlier boards.
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