U UNIVAC 1218 - Bitsavers
U UNIVAC 1218 - Bitsavers
U UNIVAC 1218 - Bitsavers
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Bit<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
Designation<br />
Bus Out Check<br />
Not used<br />
Not used<br />
Not used<br />
Inhibit Status<br />
in FF state<br />
Not used<br />
3.4.3.2 SENSE BYTE 4<br />
Sense byte 4 contains the following.<br />
Bit<br />
o<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
Designation<br />
Selective Reset<br />
Master Termination<br />
Not used<br />
Bus Parity Error<br />
Format Regi ster<br />
FF 2<br />
Format Register<br />
FF 1<br />
Master Function<br />
Register FF 2<br />
Master Function<br />
Register FF 1<br />
Interpretation<br />
CHANGE 2<br />
Even parity on bus out during transfer of<br />
data or command to ICCU from slave channel.<br />
Transmitted as zero.<br />
Transmitted as zero.<br />
Transmitted as zero.<br />
Number 1 whenever the FF is set.<br />
Transmitted as zero.<br />
Interpretation<br />
An operation has been terminated by the<br />
slave with selective reset (error detected<br />
by slave channel).<br />
An operation has been terminated by the<br />
master before normal completion. (Will<br />
always be a 0 to a sense command, status<br />
FF 7 is set by same condition.)<br />
Always transmitted as zero.<br />
A parity error has been detected on the<br />
slave output bus. (Will always be a 0<br />
to a sense command, bit 2 of first sense<br />
byte is set by the same condition.)<br />
Same as bit 3 of last MEFW. If the master is<br />
off-line, then same as bit 0 of slave sense<br />
command byte (Subsection 3.4.1).<br />
Same as bit 2 of last MEFW. If the master is<br />
off-line, then same as bit 1 of slave sense<br />
command byte (Subsection 3.4.1).<br />
Same as bit 1 of last MEFW.<br />
Same as bit 0 of last MEFW.<br />
II-G-21
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