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AX = DE1Ch
Return:
Nothing
Notes: Similar to AX=101Bh, but begins the critical region without ensuring that DOS is free. The official documentation states that this call should be paired with "ENDC" (AX=101Ch); no mention is made of AX=DE1Bh. This API call may be made from within a hardware interrupt handler
See Also: AX=101Bh - AX=101Ch - AX=DE13h - AX=DE1Bh
Category: DESQview/TopView and Quarterdeck Programs - Int 15h - D
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