Compaq TRU64 AA-RNG2A-TE - Manual (Page 36)

ECR_WRITE=0x0040,
ECR_ERASE=0x00c0,
ECR_EWENA=0x0030,
ECR_EWDIS=0x0000,
ECR_EAR= 0x0020,
ECR_WAR= 0x0010
};
#define W0_EDR 0xc 11
1 Defines the offset for the manufacturer ID register.
2 Defines the offset for the adapter ID register.
3 Defines the offset for the configuration control register.
4 Defines an enumerated data type called w0_ccr. The if_el
device driver can assign one of the following values to W0_CCR (the
configuration control register):
CCR_PCMCIA If set, this is a PCMCIA bus. Otherwise, it is an ISA bus.
CCR_AUI If set, the attachment unit interface (AUI) is available.
CCR_10B2 If set, the 10Base2 receiver is available.
CCR_ENDEC If set, the internal encode/decode (ENDEC)
loopback is used.
CCR_RESET Reset adapter.
CCR_ENA Enable adapter.
5 Defines the offset for the address control register.
6 Defines an enumerated data type called w0_acr. The if_el device
driver can assign one of the following values to W0_ACR (the address
control register):
ACR_10BT If set, the information transmission rate is at
10 Mb/sec for the Ethernet unshielded
twisted-pair cable wires.
ACR_10B5 If set, the information transmission rate is at
10 Mb/sec for the Ethernet thick coaxial cable wire.
The length between repeaters is 500 meters.
ACR_10B2 If set, the information transmission rate is at 10
Mb/sec for the Ethernet thin coaxial cable wire. The
length between repeaters is 200 meters.
ACR_ROMS Represents the read-only memory size for the ISA bus.
ACR_ROMB Represents the read-only memory base for the ISA bus.
ACR_ASE Represents the autoselect mode.
ACR_BASE Represents the I/O base address.
7 Defines the offset for the resource configuration register.
2–6 Defining Device Register Offsets