B&B Electronics SPP-100 - Manual - Manual (Page 59)

v A parallel port device may also be configured as a 'non-standard
device'; this means that the I/O base address assigned to the
parallel port device is not added to the BIOS equipment list.
v 'Standard' parallel port resources for the purposes of the SPP-100
are:
- I/O base address 278h and IRQ 5
- I/O base address 378h and IRQ 7
v 'Nonstandard' parallel port resources include any I/O base address
and IRQ level other than the 'standard' resources.
SPP-100 User's Manual A-2