Return to MAIN-Index  Return to SUB-Index    IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

IBM fast SCSI adapter



PROBLEM - The IBM fast SCSI-2 adapter FRU P/N 92F0330 has been replaced by FRU P/N 82G4879. The old adapters had jumpers for settings options. The new adapter has switches. What switch settings correspond to which functions?

Machines AFFECTED - All Valuepoint systems.

SOLUTION - interrupt selection switches


--------------------------------------------------

IRQ-0 IRQ-1 IRQ-2 function

--------------------------------------------------

off off off IRQ=3

on off off IRQ=5

off on off IRQ=10 (default)

on on off IRQ=11

off off on IRQ=disabled

on off on IRQ=14

off on on IRQ=15

on on on IRQ=disabled


ROM address selection

---------------------------------------------------

mem-0 mem-1 function

---------------------------------------------------

off off mem=c800h

on off mem=ca00h

off on mem=ce00h

on on mem=de00h


i/0 address selection

---------------------------------------------------

IO-0 IO-1 function

---------------------------------------------------

off off IO=140h

on off IO=150h

off on IO=160h

on on IO=170h


A switch is on when it is down (toward the circuit board).



FRU P/N 82G4879 automatically determines if adapter termination is required. adapter termination is always enabled unless devices are attached to both the internal and external connectors. There is no termination switch or jumper on this adapter.

For Additional Information on the switches, refer to the installation instructions provIDEd with the old adapter. The following table can be used to compare jumpers to switch settings:


function FRU 92F0330 FRU 82G4879

jumper switch

-------- ----------- -----------

interrupt is0 IRQ-0

" is1 IRQ-1

" is2 IRQ-2

ROM address ms0 mem=0

" ms1 mem=1

I/O address ios0 I/O-0

" ios1 I/O-1



A jumper installed on 2 PINs equals a switch in the on position. An errata sheet will be added to the FRU b/m.


Back to  Jump to TOP-of-PAGE
More INFORMATION / HELP is available at the  IBM-HelpCenter

Please see the LEGAL  -  Trademark notice.
Feel free - send a Email-NOTE  for any BUG on this page found - Thank you.