Control Data 3100 Reference Manual page 30

Parameters:
Bl = Return address (jump to (Bl) on channel Busy)
B2= Connect code (ch,x)
B3= Function code (ch,x)
A = ReadIWrite address (ch,P,m)
Q
= Terminal address
+
1 (n)
Where: ch = I/O channel
x = Connect or Function code
P = ReadIWrite parameters (if used, i.e. B, N or Hand INT)
m,n = Certain addresses (refer to designators in Section 7)
If any parameters are not used, they are assigned the following values:
Bl=OOOOO
B2=00000
B3=00010
A =00000000
Q
=00000000
SLS
=
Set new parameters
_ SJl = Repeat last parameters (overrides SLS)
SJl- SLS = Rewind tape unit 0 and read/write at location 00000. Jump to location 00000
on Channel Busy
(Bl) = 77625 for Repeat
(Bl) = 77644 for Stop
Addresses
77625
through
77637
are used during the execution of the subroutine.
ADDRESS INSTRUCTION ADDRESS INSTRUCTION
77640 23377222 77660
23377223
77641 00177646 77661 01077641
77642 72377124 77662 47377627
77643 24377330
77663
47277625
77644 00007476 77664 47177636
77645
77604360 77665 01077625
77646 43377144 77666 77000000
77647 00177665 77667
01077625
77650 14700000 77670 77100000
77651 77700000 77671 01077627
77652 40077632 77672 00000000
77653 13000030 77673 00000000
77654 44077631 77674 01077631
77655 05300001 77675 77600XXX*
77656 14300010 77676 01077634
77657 01077662 77677 01000000
*XXX The maximum number of 110 channels in the system (Pause Mask).
Rev. B
3-4