Instruction manual

Table 51 TURBOchannel Device Configuration Table Components
Component Address Length Description
Major version ID TC_DCT 4 Bytes Major version ID of this data
structure: 1 for DEC 3000 AXP.
Minor version ID TC_DCT + 4
16
4 Bytes Minor Version ID of this data
structure: 0 for DEC 3000 AXP.
Number of
TURBOchannel
option slots
TC_DCT + 8
16
4 Bytes Number of TURBOchannel option
slots in the system: up to 6 on the
DEC 3000 AXP.
Device ID TC_DCT + 12
16
4 Bytes The device ID of the TURBOchannel
bus: 100
16
on the DEC 3000 AXP.
Device name TC_DCT + 16
16
8 Bytes The device name for the
TURBOchannel options: TURBO0
on the DEC 3000 AXP to denote that
this is TURBOchannel bus slot 0.
TURBOchannel
device number
TC_DCT + 1E
16
4 Bytes The TURBOchannel device number
where this device resides.
Self-test error
information
TC_DCT + 22
16
8 Bytes Not applicable for TURBOchannel
options.
Pointer to extended
device status
TC_DCT + 2A
16
4 Bytes Not applicable for TURBOchannel
options.
Pointer to extended
configuration data
TC_DCT + 2E
16
4 Bytes Not applicable for TURBOchannel
options.
Pointer to allocated
permanent memory
TC_DCT + 32
16
4 Bytes Not applicable for TURBOchannel
options.
TURBOchannel
directory type
TC_DCT + 36
16
4 Bytes When set, indicates a TURBOchannel
device.
Address of
TURBOchannel
option descriptor
TC_DCT + 3A
16
4 Bytes A pointer to the TURBOchannel
option descriptor table.
Table 52 lists the device ID values.
Table 52 DEC 3000 AXP Device IDs
Device name Device ID
ASIC 0x0001
MEM 0x0010
NVR 0x0020
SFB 0x0030
SCC 0x0040
NI 0x0050
SCSI 0x0060
ISDN 0x0070
(continued on next page)
15–8 Configuration