AUTOMATIC INTERRUPT SYSTEM FOB A DATA PROCESSOR

AUTOMATIC INTERRUPT SYSTEM FOR A DATA PROCESSOR
Filed Nov. 50, 1962 14 Sheets-Ghnet

PFC

COUNT REAL
H TIME CLOCK
CONTROL

AUTOMATIC INTERRUPT SYSTEM FOR A DATA PROCESSOR Filed Nov. 30, 1962 14 Sheets-Sheet 6

FIG.4B

BRANCH TO
M INTERRUPT
ADDRESS

INVENTORS.

BLAfR C.THOMPSON
CORNELIUS C. PERKINS
JOSEPH SHIFMAN

AUTOMATIC INTERRUPT SYSTEM FOR A DATA PROCESSOR Filed Nov. 30, 1962 14 Sheets-Shoot V

... FXECUTEDly~LOGIC"

6-10—-"(START)

INVENTORS.

FIG.6 BLAIR C. THOMPSON

CORNELIUS C. PERKINS
JOSEPH SHIFMAN
STANLEY J. PEZELY

AUTOMATIC INTERRUPT SYSTEM FOR A DATA PROCESSOR Filed Nov. 30, 1962 , , 14 Sheota-Shest 3

TERMINAL DEVICE l_7.
ORIGINATES REQUEST

AUTOMATIC INTERRUPT SYSTEM FOR A DATA PROCESSOR Filed Nov. 30, 1962

14 Sheets-Sheet 3

CONTROL MODE-*
8-I6B 8-18

1—

INTERRUPT

EXAMINE CONTROL
PROGRAM DIRECTIONS

-26

GO TO APPROPRIATE
CONTROL ROUTINE

-36

ALTERNATE
TEMPORARY
STORAGE LOCATION

I/O CONTROL UNIT
TRANSMITS DESCRIPTOR
TO IN PROCESS LIST
(LIST A)

I/O CONTROL UNIT
TRANSMITS RESULT
DESCRIPTOR TO
LISTC

GENERATE NEW DESCRIPTOR
FROM TERMINATED ITEM AND
ADD IT TO WAITING LIST(LISTB)

EXECUTED AUTOMATICALLY

BY LOGIC

RETURN TO
PROGRAM

■54

FIG.8

INVENTORS.

BLAIR C. THOMPSON
CORNELIUS C. PERKINS
JOSEPH SHIFMAN
STANLEY J. PEZELY