Int 67/AX=2833h

Q87 v4+ - PREPARE TO UNLOAD AND GET XMS HANDLE FOR Q87 MEMORY

AX = 2833h
EAX = 29482833h (entire EAX value required)

Return:
EAX = XMS handle for memory allocated when Q87 was installed
EBX = status
00000000h Q87 is in demo mode (countdown running);
Q87 remains active
00000001h Q87 is in registered mode; memory manager's IDT, GDT,
and optionally CR0 (if BL <> 5Fh on entry) have
been restored
00000002h Q87 is in demo mode (demo time has expired);
Q87 remains active

Note: This call is used by UNLOAD87 to release the memory used by Q87

BUG: V4.00-v4.03 will hang on most machines when run under bare DOS with no memory manager, because neither Q87 nor UNLOAD87 checks whether there is a valid INT 67 handler before performing an installation check via INT 67

See Also: AX=4321h - INT 21/AX=4321h/BX=0000h

Category: Emulators - Int 67h - Q

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