
INC24	MACRO m
	INC m		5
	BNE NZ@		3
	INC m+1
	BNE NZ@
	INC m+2
NZ@	MEND
TIMER	INC24 M5	8
	STA M0+2	3
	LDA #$FD        2 
	STA IRQEN       4
	LDA #2	        3
	STA IRQEN       4
	LDA M5	        3
	STA $BFFF       4
	LDA M0+2        3
	RTI	        7   =41

WORK	LDA #1
	STA M6
	LDA #0
	STA M2
	STA M2+1
	LDA #255-20
	STA M2+2
EE	LDA M2
	CLC
	ADC #1
	STA M2
	LDA M2+1
	ADC #0
	STA M2+1
	LDA M2+2
	ADC #0
	STA M2+2
	BCC EE
	RTS
* 3*(3+2+3)+3+2=24+5=29 MCK per iteration
* 29*21*256*256=39911424 MCK

MCK_freq=1773447.5 Hz

43609320 MCK to skutecne trvalo a to je 24.5901386987774 s

15600 radku za sekundu * 9 refreshu je 9*15600*24.5901386987774=3452455 ztracenych cyklu.

Dal mame 200 Hz preruseni a timer trva 7+6+2+41=56 to je dalsich 
56*200*24.5901386987774=275410 ztracenych cyklu, takze pro beh programu
zustava 43609320-275410-3452455=39881455

tedy 39881455/39911424 = 0.999249112234131 coz v toleranci chyby mereni
 
refresh zere 3452455/43609320 = 7.91 % vykonu.
timer   zere  275410/43609320 = 0.63 % vykonu.


 
