Warlord wrote on 2020-08-21, 14:10:
we don't know how that PCI slot is wired. If its wired to a PCI bridge than those cards will work. if its not than they wont. Some boards will take those cards
Let me repeat back what I gathered from your comment and what I know about this board, tell me if it makes sense?
So the Tm8800 has an integrated northbridge with an on chip memory controller as well as HTT and AGP. This board has a ALI SB that connects the PCI port to the CPU via an HTT to PCI bridge.
The lspci output from the board: https://t2sde.org/hardware/desktop/HP/t5000/
00:00.0 Host bridge: Transmeta Corporation TM8000 Northbridge
00:01.0 PCI bridge: Transmeta Corporation TM8000 AGP bridge
00:02.0 PCI bridge: ALi Corporation M5249 HTT to PCI Bridge
00:03.0 ISA bridge: ALi Corporation M1563 HyperTransport South Bridge (rev 20)
00:03.1 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
00:04.0 Multimedia audio controller: ALi Corporation M5455 PCI AC-Link Controller Audio Device (rev 10)
00:0e.0 IDE interface: ALi Corporation M5229 IDE (rev c5)
00:0f.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:0f.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:0f.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]
02:05.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 8d)
So the PCI to HTT bridge is the M5249 and it seems the only PCI bridge that is not part of the CPU. For the bifurcation riser to work, there would need be a second bridge, correct?