;***************************************************
;* Mutiply 32x32 -> 64 bit
;* 
;*  R24:R21 x R5:R2 -> R15:R8
;*
;*  88 cycles + 4 (RET) = 92 Cycles
;*
mult32:
		clr	R16
		mul	R21,R2
		movw	R8,R0
		clr	R10
		clr	R11
		clr	R12
		clr	R13
		clr	R14
		clr	R15
		mul	R22,R2
		add	R9,R0
		adc	R10,R1
		mul	R23,R2
		add	R10,R0
		adc	R11,R1
		mul	R24,R2
		add	R11,R0
		adc	R12,R1

		mul	R21,R3
		add	R9,R0
		adc	R10,R1
		adc	R11,R16
		adc	R12,R16
		adc	R13,R16
		mul	R22,R3
		add	R10,R0
		adc	R11,R1
		adc	R12,R16
		adc	R13,R16
		mul	R23,R3
		add	R11,R0
		adc	R12,R1
		adc	R13,R16
		mul	R24,R3
		add	R12,R0
		adc	R13,R1

		mul	R21,R4
		add	R10,R0
		adc	R11,R1
		adc	R12,R16
		adc	R13,R16
		adc	R14,R16
		mul	R22,R4
		add	R11,R0
		adc	R12,R1
		adc	R13,R16
		adc	R14,R16
		mul	R23,R4
		add	R12,R0
		adc	R13,R1
		adc	R14,R16
		mul	R24,R4
		add	R13,R0
		adc	R14,R1

		mul	R21,R5
		add	R11,R0
		adc	R12,R1
		adc	R13,R16
		adc	R14,R16
		adc	R15,R16
		mul	R22,R5
		add	R12,R0
		adc	R13,R1
		adc	R14,R16
		adc	R15,R16
		mul	R23,R5
		add	R13,R0
		adc	R14,R1
		adc	R15,R16
		mul	R24,R5
		add	R14,R0
		adc	R15,R1
		ret