Phipli
Well-known member
I'm not sure what you meant by this CircuitBored? The 9500 has two 0020s, or two 1126s. There aren't four bandits on the 9500.The 9500 has two 0020s and two 1126s
Edit - realised you posted an updated comment.
I'm not sure what you meant by this CircuitBored? The 9500 has two 0020s, or two 1126s. There aren't four bandits on the 9500.The 9500 has two 0020s and two 1126s
@trag
If the Bandit supports 6 slots, why did they use a bridge at all? At least with two Bandits there are meant to be speed benefits somehow.
On the 9600 and similar Macs, pci-probe-list is a 32 bit number that has the following format: bridge number: 7 6 5 4 3 pci2 pci1 vci0 PCI device number: ---- ---- ---- ---- ---- F E D B F E D B - E D B slot name: F2 E2 D2 C1 B1 A1 VCI This format does not allow changing the order in which slots are probed. The bridge number is the two bits 26,25 of the bridge device unit address:
The PCI 2.1 spec says each bus should have no more than 4 devices to keep various electrical characteristics reasonable for 33 MHz operation.
I'm not sure what this means. The bandit of the 7200 appears to be at bandit@F2000000, same as other Open Firmware 1.0.5 Macs, as far as I can tell (I don't have a 7200 though).The bridge number on Bandit seems to be controlled by biasing pins 186 and 187 on Bandit to 5V or Gnd. Apparently, the 7200 uses a different bias pattern than either of the Bandits on the 9500/9600, suggesting that it occupies a different address on 7200 (0 or 6).
I'm not sure what this means. The bandit of the 7200 appears to be at bandit@F2000000, same as other Open Firmware 1.0.5 Macs, as far as I can tell (I don't have a 7200 though).