Adaptec 1737100 Programmer Manual - Page 81
Devrevid[7:0], Proginfc[7:0], Proginfc, Subclass[7:0], Subclass, Br_a1, Pci_pcirst
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Register Descriptions PCI DEVREVID (Device Revision ID) Register Type: R Internal Registers Subgroup: PCI Configuration Header Byte Address: 08h Bit(s) 7:0 rw r Reset Value 03h Table 7-7. Device Revision ID Register Description/Function DEVREVID[7:0]: Always read as 3h or higher. The Device Revision ID identifies the revision level of a PCI device. Device Revision values change in metal only. PCI Proginfc (Program Interface) Register Type: R Internal Registers Subgroup: PCI Configuration Header Byte Address:09h Table 7-8. Program Interface Register Reset Bit(s) rw Value Description/Function 7:0 r 00h PROGINFC[7:0]: The Program Interface register value identifies the specific register-level programming interface the agent supports. The PROGINFC for the first version of the AIC-6915 is identified as 00h. PCI Subclass Register Type: R Internal Registers Subgroup: PCI Configuration Header Byte Address: 0Ah Bit(s) rw 7:0 r Reset value 00h Table 7-9. Subclass Register Description/Function SUBCLASS[7:0]: The SubClass register identifies which SubClass the PCI device is assigned to. The SUBCLASS for the first version of the AIC-6915 is identified as 00h (Ethernet controller). This value can be changed to a value read from an external serial EEPROM if the BR_A1 pin is '1' when PCI_PCIRST_ is deasserted. 7-9