Multitasking Systems: Difference between revisions

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 <pre>
 PUSH                           ;; put the accumulator's content on stack
-LOAD [current_pid]             ;; put it in the accumulator
+LOAD [current_pid]             ;; load the current PID in the accumulator
-STORE_SP [context_table+ACC]
+STORE_SP [context_table+ACC]   ;; save the stack of the suspended task
-;; get somehow the next pid into ACC, without using the stack
+;; get somehow the PID for the next task into ACC, without using the stack
-STORE [current_pid]            ;; we'll need it here for the next run
-LOAD_SP [context_table+ACC]
+LOAD_SP [context_table+ACC]    ;; load the stack of the chosen task
+STORE [current_pid]            ;; store it's PID
 POP                            ;; get back the accumulator's content
 IRET                           ;; end of interrupt

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