Sony IR Remote

[fratello]

You should modulate your signal on a carrier of about 38 kHz. You can generate this with assembly or use a pic12f683 and use the internal pwm generator. Then you can modulate this signal by switching the trisio pin.

I intend to build remote using 12F675 (I have a lot...and none of 12F683). How generating a carrier of 39 kHz with assembly ? I found something about 40 kHz pulse on Mr.Bruce site, but...
Please, one clue ?!
?!?
Pulse: '// Emits # of 39kHz bursts held in variable Cycles
ASM ;// with auto delay between bursts
bsf gpio, 0 ;// 1uS, LED=on [need 25uS total ???????
goto $+1 ;// 3uS (2uS per goto $+1)
goto $+1 ;// 5uS
goto $+1 ;// 7uS
goto $+1 ;// 9uS
goto $+1 ;// 11uS
' goto $+1 ;// 13uS 'comment this for 39 kHz ???
bcf gpio, 0 ;// 14uS, LED=off
goto $+1 ;// 16uS
goto $+1 ;// 18uS
goto $+1 ;// 20uS
goto $+1 ;// 22uS
decfsz _Cycles,F ;// 23uS
goto _Pulse ;// 25us
ENDASM
PAUSEUS 500 '// 500uS delay between each data bit
RETURN '// Return to Main

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