Bus Messages; Hp 1630 Hp-Ib Implementation - HP 1630A Operating And Programming Manual

An HP-113 Overview Model 1630A/D/G
BUS MESSAGES
Since interface functions are the physical agency through which bus messages are implemented, each device
must implement one or more functions to enable it to send or receive a given bus message .
The following table lists the functions required to implement each bus message . Each device's operating
manual lists the functions implemented by that device. Some devices, such as the 98034A Interface, list the
functions implemented directly on the device .
a.
b.
c.
d .
e .
f.
9.
h .
1-
k .
I .
m.
Functions Used By Each Bus Message
'Since more than one decive can receive (or send) this message simultaneously, each device must have the
function indicated by an " .
HP 1630 HP-113 IMPLEMENTATION
Functions Implemented (ANSI/IEEE 488-1978)
HP-IB Implementation when 1630 is
Source Handshake (SH1)
Acceptor Handshake (AH1)
Talker (T6) Serial Poll
Talker-Extended (TEO) No
Listener (L4)
Listener-Extended (LEO) No
Service Request (SR1)
Remote/Local (RL1) Yes
Parallel Poll (PP1)
Device Clear (DC1)
Device Trigger (DT1)
Controller (CO) No
Drive Electronics (E2) Tri-state
non-controller
Bus Message
Functions Required
sender function - receiver
function(s) (support functions)
Data
T - L- (SH, AH)
Trigger C - DT* (L, SH, AH)
Clear C - DC' (L, SH, AH)
Remote CS - RL- (SH, AH)
Local C - RL* (L, SH, AH)
Local Lockout C - RL- (SH, AH)
Clear Lockout/Set Local CS - RL'
Require Service SR' - C
Status Byte T - L- (SH, AH)
Status Bit PP' - C
Pass Control CA - CB (T, SH, AH)
Abort CS - T, L'C