Omega Engineering OMB-CHARTSCAN 1400 User Manual page 256

Appendix E
Bus States, Bus Lines, and Data Transfer Aspects
Bus State
Bus Management Lines
IFC
REN
IEEE 488 Interface: Bus Management Lines
ATN
EOI
SRQ
IEEE 488 Interface: Handshake Lines
DAV
NDAC
NRFD
Serial Interface: Bus Management Lines
DTR
RI
RTS
Serial Interface: Handshake Lines
CTS
DCD
DSR
Hexadecimal & Decimal Values
Bus State
DCL
GET
GTL
LAG
LLO
MLA
MTA
PPC
PPD
PPU
SCG
SDC
SPD
SPE
TAG
TCT
UNL
UNT
Hexadecimal & Decimal Values
ChartScan User's Manual,
11-97
Bus Line
Interface Clear
Remote Enable
Attention (&H04)
End-Or-Identify (&H80)
Service Request (&H40)
Data Valid (&H08)
Not Data Accepted (&H10)
Not Ready For Data (&H20)
Data Terminal Ready (&H02)
Ring Indicator (&H10)
Request To Send (&H01)
Clear To Send (&H04)
Data Carrier Detect (&H08)
Data Set Ready (&H20)
Hex Value (QuickBASIC)
Decimal Value
IEEE 488 Bus Command
(ATN is asserted "1")
Device Clear
Group Execute Trigger (&H08)
Go To Local (&H01)
Listen Address Group (&H20-3F)
Local Lock Out (&H11)
My Listen Address
My Talk Address
Parallel Poll Config
Parallel Poll Disable (&H07)
Parallel Poll Unconfig (&H15)
Second. Cmd. Group (&H60-7F)
Selected Device Clear (&H04)
Serial Poll Disable (&H19)
Serial Poll Enable (&H18)
Talker Address Group (&H40-5F)
Take Control (&H09)
Unlisten (&H3F)
Untalk (&H5F)
Hex Value (QuickBASIC)
Decimal Value
Data Transfer (DIO) Lines
8 7 6 5
0 0 0 0
1 0 0 0
0 1 0 0
0 0 0 0
0 0 0 1
0 0 1 0
0 0 0 0
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
0 0 1 0
&H80 &H40 &H20 &H10
128 64 32 16
Data Transfer (DIO) Lines
8 7 6 5
0 0 0 1
0 0 0 0
0 0 0 0
0 0 1 a
0 0 0 1
0 0 1 a
0 1 0 a
0 1 1 0
0 0 0 0
0 0 0 1
0 1 1
c
0 0 0 0
0 0 0 1
0 0 0 1
0 1 0 a
0 0 0 0
0 0 1 1
0 1 0 1
&H80 &H40 &H20 &H10
128 64 32 16
4 3 2 1
0 1 0 0
0 0 0 0
0 0 0 0
1 0 0 0
0 0 0 0
0 0 0 0
0 0 1 0
0 0 0 0
0 0 0 1
0 1 0 0
1 0 0 0
0 0 0 0
&H08 &H04 &H02 &H01
8 4 2 1
4 3 2 1
0 1 0 0
1 0 0 0
0 0 0 1
d d r n
0 0 0 1
d d r n
d d r n
S P2 P1 P0
0 1 1 1
0 1 0 1
o m m d
0 1 0 0
1 0 0 1
1 0 0 0
d d r n
1 0 0 1
1 1 1 1
1 1 1 1
&H08 &H04 &H02 &H01
8 4 2 1
E-1