Category: <b>hardware</b>
<br>Flags: callout or callback (usually hooked rather than called)<p>
<pre><b>INT 75 - IRQ13 - MATH COPROCESSOR EXCEPTION (AT and up)</b>

Desc:	redirected to INT 02 by the BIOS, for compatibility with the PC
Notes:	may be masked by setting bit 5 on I/O port A1h
	not all clones wire the coprocessor to generate this IRQ; some systems
	  generate an NMI (see INT 02) or assert the -ERROR pin on the CPU
	  (see INT 10"COPROCESSOR")
	under DESQview, only the INT 15h vector and BASIC segment address (the
	  word at 0000h:0510h) may be assumed to be valid for the handler's
	  process
SeeAlso: INT 10"COPROCESSOR",INT 5D"IRQ13",MEM 0040h:006Bh
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