488 CONTROLLER
6
Contents (continued)
Chapter
Page
6. Controller Pass-Thru Operation ...................................................................................................................74
6.1
Introduction..........................................................................................................................................74
6.2
Serial and IEEE Terminator Substitution ...........................................................................................74
6.3
IEEE Address Selection ........................................................................................................................75
6.4
Talk Back On Terminator.....................................................................................................................75
6.5
Plotter Applications ..............................................................................................................................76
6.6
Printer Applications .............................................................................................................................78
7. Peripheral Pass-Thru Operation ...................................................................................................................79
7.1
Introduction..........................................................................................................................................79
7.2
Serial and IEEE Input Buffers .............................................................................................................79
7.3
IEEE Data Transfers..............................................................................................................................80
7.3.1
Blind Bus Data Transfers .........................................................................................................80
7.3.2
Controlled Bus Data Transfers ................................................................................................81
7.4
Serial Poll Status Byte Register ............................................................................................................82
7.5
Use of Serial and Bus Terminators ......................................................................................................83
7.6
IEEE 488 Bus Implementation ............................................................................................................83
7.6.1
My Talk Address (MTA)...........................................................................................................83
7.6.2
My Listen Address (MLA) .......................................................................................................83
7.6.3
Device Clear (DCL and SDC) .................................................................................................84
7.6.4
Interface Clear (IFC) ...............................................................................................................84
7.6.5
Serial Poll Enable (SPE) ..........................................................................................................84
7.6.6
Serial Poll Disable (SPD) .........................................................................................................84
7.6.7
Unlisten (UNL)........................................................................................................................84
7.6.8 Untalk
(UNT) ..........................................................................................................................84
7.7
IEEE Address Selection ........................................................................................................................84
8. IEEE 488 Primer.............................................................................................................................................85
8.1
History ...................................................................................................................................................85
8.2
General Structure .................................................................................................................................85
8.3
Send It To My Address..........................................................................................................................87
8.4
Bus Management Lines ........................................................................................................................87
8.4.1
Attention (ATN) ......................................................................................................................87
8.4.2
Interface Clear (IFC) ...............................................................................................................87
8.4.3
Remote Enable (REN).............................................................................................................87
8.4.4
End or Identify (EOI)..............................................................................................................87
8.4.5
Service Request (SRQ) ............................................................................................................87
8.5
Handshake Lines ..................................................................................................................................88
8.5.1
Data Valid (DAV) .....................................................................................................................88
8.5.2
Not Ready For Data (NRFD) ...................................................................................................88
8.5.3
Not Data Accepted (NDAC)....................................................................................................88
8.6
Data Lines .............................................................................................................................................89
8.7
Multiline Commands............................................................................................................................89
8.7.1
Go To Local (GTL) ..................................................................................................................89
8.7.2
Listen Address Group (LAG) ..................................................................................................89
8.7.3
Unlisten (UNL)........................................................................................................................89
8.7.4
Talk Address Group (TAG) .....................................................................................................89
8.7.5
Untalk (UNT) ..........................................................................................................................89
8.7.6
Local Lockout (LLO) ..............................................................................................................89
8.7.7
Device Clear (DCL) .................................................................................................................89
