Measurement-computing Micro 488/EX rev.2.1 Manual de usuario descargar pdf (Pagina 177)

Section 7 Peripheral Pass-Thru Operation

7.5

Serial Poll Status Byte

DIO8 DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1

1428163264128

IEEE Input Bu

ffer Not Empt y

Not Used - Al ways '0'

Serial Handsh ake

Not Used - Al ways '0'

Serial Input Buffer Not Em pty

Request Servi

ce - rsv bit

IEEE Input Bu ffer Full

Last Serial I nput Terminat or

DIO7 rsv

This bit is defined by the IEEE 488 Specification and is used to

indicate to the bus controller that the Micro488/EX is the bus

device that requested service. It is cleared when the interface is

serial polled by the controller.

DIO6

Not Defined - Always "0"

DIO5

Serial Input Buffer

NOT

EMPTY

This bit is set when the serial input buffer contains one or more

data bytes which have not been sent out the IEEE bus. It is

cleared, set to "

", when the buffer is empty.

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Measurement-computing Micro 488/EX rev.2.1 Manual de usuario Pagina 177