Control Data Cyber 170 State Hardware Reference Manual page 66

Central Memory Controls
. . .
- -
.
SET SWO UP TO MOVE BLOCK OF MEMORY CONTAINING ERROR TO UPPER HALF OF MEMORY.
64
MBYTES
I
SWO=UP
I
1/64 MBYTES//
/ /
(CONTAINS1
/
I
/ / / E R R O R ) / / /
64 MBYTES OF
1/64 MBYTES// 64 MBYTES
ERROR-FREE
//(CONTAINS/
/
MEMORY
/ I / ERROR)
/ I /
. . .
I
128 MBYTES
ERROR I N LOWER 64MBYTE BLOCK OF 128-MBYTE MEMORY.
SET SW1 UP TO MOVE 32-MBYTES BLOCK CONTAINING ERROR TO NEXT HIGHER 32 MBYTES.
THEN SET SWO UP TO MOVE BLOCK CONTAINING ERROR TO HIGHEST BLOCK OF MEMORY.
32 MBYTES SWl=UP 32 MBYTES
SWO=UP
32 MBYTES
32 MBYTES
96-MBYTES OF
ERROR-FREE
132 MBYTES/ 32 MBYTES
MEMORY
/ / l / l l l / / / l l
128 MBYTES
ERROR I N LOWEST 32-MBYTE BLOCK OF 128-MBYTE MEMORY.
SET SW2 UP TO MOVE 16 MBYTE BLOCK CONTAINING ERROR TO NEXT HIGHER BLOCK.
THEN SET SW1 UP TO MOVE 32 MBYTE BLOCK CONTAINING ERROR TO HIGHEST BLOCK
OF MEMORY.
16 MBYTES
16 MBYTES 112-MBYTES OF
16 MBYTES ERROR-FREE
16 MBYTES MEMORY
16 MBYTES
16 MBYTES
128 MBYTES
ERROR I N LOWEST 16-MBYTE BLOCK OF UPPER HALF OF 128-MBYTE MEMORY
Figure
3-4.
Reconfiguration Examples