Category: emulators
INT 21 - Q87, Q387 - INSTALLATION CHECK AX = 4321h BX = 0000h EAX = 87654321h (entire EAX value is required, not just AX) Return: EAX = 12345678h if installed Program: Q387 (renamed to Q87 as of v3.7) is a math coprocessor emulator from Quickware Note: this function is available only in virtual-86 mode in older versions; newer versions also provide it in MS Windows 16- and 32-bit protected mode SeeAlso: AX=4321h/BX=0001h,AX=4321h/BX=0002h,INT 67/AX=4321h