Machine organization Question to be answered: If memory location x0012 contains the value x4000, identify how the routine will be invoked.

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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Machine organization

Question to be answered:

If memory location x0012 contains the value x4000, identify how the routine will be invoked.

Suppose we define a service routine starting at memory location x4000. This
routine reads in a character and echoes it to the screen.
. ORIG x4000
ST R7, SaveR7
GETC
OUT
LD R7, SaveR7
RET
SaveR7 .FILL x0000
Transcribed Image Text:Suppose we define a service routine starting at memory location x4000. This routine reads in a character and echoes it to the screen. . ORIG x4000 ST R7, SaveR7 GETC OUT LD R7, SaveR7 RET SaveR7 .FILL x0000
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