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switch to develop Display Stor. The Display Stor
line allows stat 4 to be set. The position of the stor-
age select rotary switch determines the setting of
stats 5 and 6 (Figure 176).
Halt loop decode of stats
4-7 branches ROS to QT220 for the selected routine
as follows:
Display Main Storage--20A, 200, 235.
Address keys to R register to SAR.
SOR displays data at the location specified.
Display Storage Protect Key--20A, 20E, 2BB,
2BE.
Address keys to R register to SAR.
Storage Protect Key to F register.
F register indicators display Protect Key
(CPU Roller #2, Position #4).
Display Local Storage--20B, 244, 2Cl, 21-
(branch on sector), 234.
Address keys 22-23 to LSFR, 24-27 to MD
(LS sector, address).
Local Storage to L register.
L register indicators display local
storai~e
(CPU Roller #1, Position #1).
Display MPX Bump Storage--20B, 244, 2C3, 21-
(branch on sector), 235.
Address keys 22-3i
to
SAR
(~::::-::::J
=
sector)
SDR indicators display bump area specified.
All display routines end by branching back to
the halt loop.
Store: The store pushbutton switch causes the data
specified by the data keylever switches to be stored
in the selected area. The MC Pulse Gated line AND's
with the store PB switch to develop the Write Stor
line. Write Stor allows the setting of stats 4 and 7.
The setting of stats 5 and 6 is dependent on the posi.-
tion of the storage select rotary switch. Halt loop
decoding of stats 4-7 branches ROS to QT220 for the
selected routine as follows:
Store in Main Storage--20A, 20D, 237.
Address keys to R register to SAR.
Data keys to SDR.
Store Storage Protect Key--20A, 20 F, 2BF.
Address keys to R register to SAR.
Data keys to F register.
F register to storage protect.
Store in Local Storage--20B, 244, 2Cl, 21-
(branch on sector), 236.
Address keys 22-23 to LSFR, 24-27 to MD
(LS sector, address).
Data keys to Local Storage.
Store in MPX -Bump--20B, 244, 2C3, 21-
(branch on sector), 237.
Address keys 22-31 to SAR (sector, address).
Data keys to SDR.
All store routines end with ROS branching back
to the halt loop.
Appendix B--System Control Panel
(3/71)
161
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