MULTI-TECH SYSTEMS, INC.

SPB-AT

Card Type               Multi I/O card
Chip Set                INS 16450 chip
Maximum Onboard Memory  None
I/O Options             parallel port, serial port
Data Bus                16-bit ISA
Floppy drives supported None

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  Serial port                  CN1     Parallel port                CN2

   BASE I/O ADDRESS SELECTION

  Address    SW1/5      SW1/7

   278h       Off        On

   378h        On        Off

       ADDRESS SELECTION

  Setting    SW1/1     COM1/3

   COM1        On        Off

   COM2       Off        On

            INTERRUPT SELECTION

   IRQ     SW1/2   SW1/4    SW1/6    SW1/8

  IRQ3      Off      On      Off      Off

  IRQ4      On      Off      Off      Off

  IRQ5      Off     Off      Off       On

  IRQ7      Off     Off       On      Off

                MISCELLANEOUS TECHNICAL NOTES

            Note: The purpose of J1 and J2 is unidentified.