Advantech 4-Port RS-232 Interface card PCL-849 - Manual (Page 31)

3 2 PCL-849 User's Manual
Ø Jumper Setting
·
IRQ Mode
DIP 1 (MODE 0) of S1 is used to set the IRQ mode of this card.
DIP1 : ON (Upper) position
è Shared IRQ mode
DIP1 : OFF (Lower) position
è Independent IRQ mode
·
STANDARD/ ENHANCED Mode
DIP 2 (MODE 1) of S1 is used to set the standard/enhanced mode of
this card.
DIP1 : ON (Upper) position
è STANDARD mode
DIP1 : OFF (Lower) position
è ENHANCED mode
·
SPEED Mode
DIP 1 (SPEED) of S2 is used to determine the speed mode of this
card.
Ø Operating System Mode
Connect the left two pins of JP15 to use DOS, Windows 3.1
Connect the right two pins of JP15 to use Windows 95/98/ NT
DIP1 : ON (Upper) position
è High Speed Mode or ´ 8 Mode
(Frequency of Oscillator Crystal = 14.7456 MHz)
DIP1 : OFF (Lower) position
è Normal Speed Mode
(Frequency of Oscillator Crystal = 1.8432 MHz)