RCA Spectra 70 - Page 40

Program Interrupt
11.
9
Extract Key, Decimal Code,
and Privilege Mode bits from
ISR of Initiated State
12.
I
Store Identity of Terminated
State in IS R of
Initiated State
13.
I
Store Weight of Interrupt in
GR
No. 15 of Initiated State
(See
Note 4.)
14.
Supervisor Call Interrupt?
Yes
I
15.
Store Call
in ISR of State in
No
which the Supervisor call
was executed
16.
Static ize and Execute
instruction specified by
P
Counter of Initiated State
Interrupt Analys is Program
Figure 3. Functional Logic of Automatic Interrupt (Cont'd)
31