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7A09--BX8020

Category: IBM workstation/terminal emulators

INT 7A - IBM 3270 Workstation Program API - WINDOW SERVICES

	AH = 09h
	BX = 8020h (synchronous request)
	CX = 00FFh
	DX = ID of window service controller (WSCTRL)
	AL = service number (see #03836)
	ES:DI -> control block
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