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AlphaServer 2100 (3 PCI slots)
In addition to 3 PCI vacant slots there are 3 PCI positions occupied by on-board devices. All 6 PCI positions are listed in the following table in the order in which Alpha SRM console enumerates them.
| Slot | pci_<N> | device | function | irq | Description |
|---|---|---|---|---|---|
| - | 0 | 0 | 0 | 2 | DEC TULIP PCI Ethernet adapter |
| - | 0 | 1 | 0 | 1 | NCR 53C810 PCI SCSI Adapter |
| - | 0 | 2 | 0 | - | Intel i82375 PCI EISA Bridge (MERCURY) |
| 0 | 0 | 6 | 0 | 0 | <option> |
| 1 | 0 | 7 | 0 | 4 | <option> |
| 2 | 0 | 8 | 0 | 5 | <option> |
The IRQ stands for input line of T2 resident cascade of Intel i8259 interrupt controllers. It has nothing to do with “EISA” style interrupts.
So far the CHARON-AXP emulators do not support virtual NCR 53C810 PCI SCSI adapter. Instead, virtual QLOGIC ISP1040B PCI SCSI adapter is used.
AlphaServer 4000 (16 PCI slots)
In addition to 16 PCI vacant slots there are 2 PCI positions occupied by on-board devices. All 18 PCI positions are listed in the following table in the order in which Alpha SRM console enumerates them.
| Slot | pci_<N> | device | function | irq | Description |
|---|---|---|---|---|---|
| - | 1 | 1 | 0 | 4 | NCR 53C810 PCI SCSI Adapter |
| - | 1 | 2 | 0 | 8 | <option> |
| - | 1 | 3 | 0 | 12 | <option> |
| - | 1 | 4 | 0 | 16 | <option> |
| - | 1 | 5 | 0 | 20 | <option> |
| - | 0 | 1 | 0 | - | Intel i82375 PCI EISA Bridge (MERCURY) |
| - | 0 | 2 | 0 | 8 | <option> |
| - | 0 | 3 | 0 | 12 | <option> |
| - | 0 | 4 | 0 | 16 | <option> |
| - | 0 | 5 | 0 | 20 | <option> |
| - | 3 | 2 | 0 | 8 | <option> |
| - | 3 | 3 | 0 | 12 | <option> |
| - | 3 | 4 | 0 | 16 | <option> |
| - | 3 | 5 | 0 | 20 | <option> |
| - | 2 | 2 | 0 | 8 | <option> |
| - | 2 | 3 | 0 | 12 | <option> |
| - | 2 | 4 | 0 | 16 | <option> |
| - | 2 | 5 | 0 | 20 | <option> |
So far the CHARON-AXP emulators do not support virtual NCR 53C810 PCI SCSI adapter. Instead, virtual QLOGIC ISP1040B PCI SCSI adapter is used.
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