INT 74 C - IRQ12 - POINTING DEVICE (PSIBM PS/2, any model)
Notes:	may be masked by setting bit 4 on I/O port A1h
	DOS 3.3+ revectors IRQ12 to a stack-switching routine unless STACKS=0
	  has been set in CONFIG.SYS.  MS/PC-DOS use the IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. Interrupt Sharing
	  Protocol (see #02568) when hooking this IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated.
	under DESQview, only the INT 15h vector and BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN.  There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular.	All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM. segment address (the
	  word at 0000h:0510h) may be assumed to be valid for the handler's
SeeAlso: INT 33/AX=0000h,INT 33/AX=0024h,INT 5C"NetBIOSOne of a number of low-level device-independent network interfaces; the other major interfaces are Novell's IPX and the Internet's IP (Internet Protocol, the lower-level portion of TCP/IP).",MEM 0040h:006Bh