I/O Processor
242 AS/400e System Handbook
• #4748 - PCI RAID Disk Unit Controller
• #4750 - PCI ISDN BRI U IOA
• #4751 - PCI ISDN BRI S/T IOA
• #4761 - PCI Integrated Analog Modem
• #4801 - PCI Crypto Coprocessor
• #4815 - PCI ATM 155 MBPS UTP OC3
• #4816 - PCI ATM 155 MBPS MMF
• #4818 - PCI ATM 155 MBPS SMF OC3
• #4838 - PCI 100/10 Mbps Ethernet IOA
• #9767 - Base PCI Disk Unit Controller
• #9771 - Base PCI 2-Line WAN w/Modem
The #2842 can drive a maximum of four IOAs, subject to further restrictions as stated in the
following IOP descriptions and subject to further restrictions as stated in the preceding IOP
descriptions and in “PCI Card Placement Rules” on page 279.
#2843/#9943 PCI IOP
The #2843/#9943 is an PCI I/O processor with 64 MB of memory that drives PCI IOA
adapters on Models 820, 830, 840, SB2, and SB3, on the #5075 PCI Expansion Tower when
attached to the Model 820, the #5074 PCI Expansion Tower, and the #5079 1.8m I/O Tower.
Up to five feature #2843 PCI IOPs may be added to the Model 820 System Unit. The #5075,
when attached to a Model 820, can contain or support up to three feature #2843 PCI IOPs.
On Models 830, 840, SB2, and SB3, a PCI IOP is not embedded on the backplane, but a
#9943 PCI IOP is included as “base” with the system. Up to four feature #2843 PCI IOPs may
be added in the system unit of Models 830 and 840. Up to two feature #2843 PCI IOPs may
be added in the system unit of Models SB2 and SB3. On the #5074 PCI Expansion Tower, a
PCI IOP is not embedded but a #9943 PCI IOP is included as “base”. Up to six feature #2843
PCI IOPs may be added to a #5074.
On the #5079 1.8M I/O Tower, a PCI IOP is not embedded but two #9943 PCI IOPs are
included as “base”. Up to 12 feature #2843 PCI IOPs may be added to the #5079.
Note: #9943 may only be on initial system orders or on MES orders add #5074 or #5079
towers to an installed system. The maximum number of #9943s installed on a system is one
in the system unit plus one in each #5074 plus two in each #5079.
The following IOAs are supported (driven) by the embedded PCI IOP (Model 820) and the
#2843/#9943 PCI IOP:
• #2743 - PCI 1 Gbps Ethernet IOA
• #2744 - PCI 100 Mbps Token Ring IOA
• #2763 - PCI RAID Disk Unit Controller 2 Port (Model 820 only)
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