IBM System/360 2050 Maintenance Manual page 55

Processing unit
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FLT Compare
and Branch
QY510-F4C
Actual Response (From Adr
Specified in Loe 80 of MS)
to SOR
F4F
Store Actual Response in Loe
80 of MS
FOF
Mask (From Adr Specified in
Loe
84
of MS)
ta SOR
FCO
OR Actual Response (From Loe
80) with Mask in SOR
F80
Step Bin Tgr if SOR Is All 1 's
F40
Expected Response to SOR and
Step Bin Tgr if Ali 1 's
FCC
Set
Pass/
Fail Tgn
Increment Scan Test Ctr
Fint Branch Adr (X) to SOR
Branch Adr
Values
X (This Test)
Result Of
Scan test ctr not zero
(15
Times).
X+ 1 (Next Test) Test passed--or bath
fail
and pass
tgn off and start PB.
X+ 2 (Scopex)
Test failed and tennination bit On
(SOR contains segment and test
number that failed).
X + 3 (This Test) Test failed, termination bit
was
1,
and start PB.
X+4(NextTest) Test failed, termination bit
was
1,
FLT
mode
switch on
11
Force Pass",
and start PB.
i
Stepping the bin trigger
l
at this point, turns
it
on.
i
Bin Tgr On--Set Fail Tgr
j
Bin Tgr Off--Set Pass Tgr
Zero
F4A
Second Branch Adr
(X+
1)
ta SOR
QY510-F06
Third Branch Adr
(X + 2) to SOR
On
Tennination bit (all FLT
programs have
this bit)
~l
F46
Trap (Normal failure)
Foil Tgr and Term Bit
Reset P/F Tgn
Fourth Branch Adr
(X +
3) to
SOR
Fifth Branch Adr
(X + 4)
to
SOR
Off
FB2
F04
Off
On
Trap (Intermittent Failure)
Both Pass and Foil Tgn On
On
Adr=X+2
.-----<.
FCl
Trap (Checking Failure)
Pass
and Fail Tgn Off
FCO
Reset
P
/F Tgn
Adr= X+
3 - - - - •
I
Resu It of FLT mode
switch on force pass
and start PB
Entry from scan test ctr
not zero (15 times)
I
-Adr= X
Adr=X+4
- -
QY310-F48
NOTE: Result of start PB
Branch Adr to IAR
Reset Bin Tgr Off
Start Scan- In
FIGURE 33. FLT COMPARE ANO BRANCH KERNEL
Off

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