Appendix B
Mnemonics Key
© National Instruments Corporation
B-3
VXI-MXI User Manual
Mnemonic
Type
Definition
BTO
VBS/MBS
Bus Timeout
BUSY*
MBS
Bus Busy
C
CLK10
VXS
VXIbus 10-MHz System Clock
CMODE
B
Comparison Mode
D
D[31-0]
VBS
VMEbus Data Lines 31 through 0
DEVCLASS
B
VXIbus Device Class
DIRQ[7-1]
B
Drive IRQ Lines
DRVECL0
B
Drive ECL Trigger Line 0
DRVECL1
B
Drive ECL Trigger Line 1
DS*
MBS
MXIbus Data Strobe
DS0*
VBS
VMEbus Data Strobe 0
DS1*
VBS
VMEbus Data Strobe 1
DSYSFAIL
B
Drive SYSFAIL
DSYSRST
B
Drive SYSRESET
DTACK*
VBS/MBS
Data Transfer Acknowledge
DTRIG[7-0]
B
Drive VXIbus Trigger Lines
E
ECL0DIR
B
ECL Trigger Line 0 Direction
ECL0EN
B
ECL Trigger 0 Enable
ECL1DIR
B
ECL Trigger Line 1 Direction
ECL1EN
B
ECL Trigger 1 Enable
ECLSTAT0
B
ECL Trigger Line 0 Status
ECLSTAT1
B
ECL Trigger Line 1 Status
ECLTRG[1-0]
VXI
ECL Trigger Lines
EDTYPE
B
Extended Device Type
EINT[7-1]DIR
B
Extended Interrupt Direction
EINT[7-1]EN
B
Extended Interrupt Enable
EO
VME
Even and Odd Transfers
ETOEN
B
External Trigger Output Enable
ETRGDIR[7-0]
B
Extended Trigger Direction
ETRGEN[7-0]
B
Extended Trigger Enable
ETRIG
B
Enable Trigger Lines
F
FAIR
MXI
Fair Bus Requester
G
GIN
MBS
Daisy-chain Grant In
GOUT
MBS
Daisy-chain Grant Out