IBM System/360

2803 TAPE CONTROL (Continued)
Sense Bytes
Sense Byte 0
Bit Name
Command
Reject
Intervention
Required
Description
Set when a write, write tape mark, or erase
corr·mand is addre~sed to a file protected
tape unit, or a data. converter on mode set
corr mand is recognized on a TCU without the
data converter feature. In this case the
mode set is executed for parity, density, and
translator.
Set whenever status A is inactive. See "Sense
Byte 2.
11
2 Bus-out Check Set whenever even parity appears on bus-out
3
4
Equipment
Check
Data Check
Overrun
Word Count
Zero
during data transfer in initial selection or
write operations.
Set whenever an equipment check occurs.
See nsense Byte 5.
11
Set when a data check occurs. See
11
Sense
BytE 4."
Set if service is requested, but data cannot
be transferred during a read, write, or read
backward operation.
Set during a write operation if transfer of
data is prevented before the first byte of
data.
Data Converter See ·
1
Data Conversion Feature. n
Check
IBM CONFIDENTIAL
S/360 83