Measurement-computing Digital HS Manual de usuario descargar pdf (Pagina 48)

4.7.9 Serial Poll Disable (SPD)

The

SPD

command disables all devices from sending their Serial Poll status byte.

($19)

4.7.10 Serial Poll Enable (SPE)

A device which is Addressed to Talk will output its Serial Poll status byte after

SPE

is sent and

ATN

is unasserted. ($18)

4.7.11 Group Execute Trigger (GET)

This command usually signals a group of devices to begin executing a triggered

action. This allows actions of different devices to begin simultaneously. ($08)

4.7.12 Take Control (TCT)

This command passes bus control responsibilities from the current

Controller

another device which has the ability to control. ($09)

4.7.13 Secondary Command Group (SCG)

These are any one of the 32 possible commands (0 to 31) in this group. They must

immediately follow a talk or listen address. ($60 to $7F)

4.7.14 Parallel Poll Configure (PPC)

This configures devices capable of performing a

Parallel

Poll

as to which data bit

they are to assert in response to a

Parallel

Poll

. ($05)

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Measurement-computing Digital HS Manual de usuario Pagina 48