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6
=
data overrun in host write data (the host wrote
more data than was specified in the request)
7
=
block mode data transfer is not allowed for the
request
8
=
data transfer length is too large
9
=
cannot execute control card request - not enough space
254
=
transmit not allowed in simplex receive mode
255
=
receive not allowed in simplex transmit mode
length of data transfer field
HP 27130B
This field gives the length in bytes of the data transfer initiated by the card for the host read or
write request.
Note that the length does not reflect any early termination initiated by the host. For example, if
the host started a host read request of 200 bytes and the card is able to send 200 bytes, the card
will return the length as 200 even if the host invoked END to terminate the transfer early.
message type field
=
text terminated on single text terminator. The text terminator which terminated the message
is given in byte 6
4
=
text terminated by count
5
=
text terminated by parity error
6= text terminated by data overrun
7
=
text terminated by framing error
8
=
text terminated by alert 1 condition
9
=
text terminated by the card, more data coming
12
=
text terminated by the card, no more data
13
=
text terminated by buffer overflow
14
=
host initiated text termination
"E"
=
record contains an error
4-41
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