G - Physics – 06 – F
Patent
G - Physics
06
F
354/237
G06F 13/00 (2006.01) G06F 12/02 (2006.01)
Patent
CA 1170779
ABSTRACT OF THE DISCLOSURE Separate memory management units (17, 19) are des- cribed for use with a central processing unit (11) to separately control expanding stack and data memory por- tions within a single logical memory segment. The stack and data portions are prevented from expanding into each other by a break register (27 or 29) which contains an address between the two memory portions and is updated as the stack and data memory portions expand and contract. The stack memory management unit (17) only is enabled when a portion of the memory is addressed on one side of the break value while the data memory management unit (19) only is utilized when the address is on the other side of the break value.
398713
Hughes Ronald P.
Swartz Douglas G.
Weiner Bruce E.
Swabey Ogilvy Renault
Zilog Inc.
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