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Model-Driven Evolution of Software Architectures - Software and ...

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7.7. TargetMetamodel 149<br />

><br />

WAIT_FOR_WS<br />

WS available/ claim WS<br />

[else]<br />

><br />

WAIT_FOR_WS<br />

><br />

WAIT_FOR_UR<br />

CHECK_RCB<br />

entry / check RCB comm.<br />

[else]<br />

[UR available ]/ claim UR<br />

Concurrent_State<br />

[WS available]/ claim WS<br />

FINISH<br />

[UR available ]/ claim UR<br />

[else]<br />

[else]<br />

entry / finish_exchange<br />

exit / release<br />

/ WS_moved<br />

WS available/ claim WS<br />

MOVE<br />

entry / move UR to rotate<br />

exit / release<br />

/ UR_moved<br />

UR available / claim UR<br />

CHECK_RCB<br />

entry / check RCB comm.<br />

[WS available]/ claim WS<br />

><br />

WAIT_FOR_UR<br />

/ transfer_finished<br />

TRANSFER<br />

entry / transfer_W2U<br />

[combined_load ]<br />

exit / release<br />

[else]<br />

UR available / claim UR<br />

[RCB ok]<br />

REPORT<br />

entry / report done<br />

Figure 7.8:Normalisedunloadwaferrequest

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