// what is this code supposed to do?:
//  - setup dptr to point to the sample buffer
//  - wait for bit 2 on port B to become 0 (fixed trigger for now)
//  - activate time 1
//  - wait until timer 1 overflow bit is set and store a sample
//  - do this 16*0x100 times
//  - exit

// TIMER SETUP
	// timer 1 ticks a 1 us ->
	TH1 = 0xff - 2;			// set timer 1 reload value
	TL1 = 0xff - 2;			// set timer 1 value

			__sbit __at (0xB0+7) TF1;

// DATA ACQUISITION
			__asm
				// load sample ptr
				mov	dpl, #0 //#(samples & 0xff)	// is a 256 byte boundary so it is actually 0
				mov dph, #(_samples >> 8)
				mov	r0, #0
				mov	r1, #0

				// wait for trigger condition
			00001$:
				mov		A, _IOB
				anl		A, 0x02
				cjne	A, 0, 00001$

				// trigger condition is met, start timer
				orl		_TCON, #0x40

				// put sample into buffer
			00002$:
				mov		A, _IOB
				movx	@DPTR, A	// store samples
				inc		DPTR
			//	movx	@R0, A
				inc		R0
			//	cjne	dpl, #0, 00003$
				cjne	R0, #0, 00003$
				inc		r1
			//	inc		dph
				cjne	r1, #16, 00003$
				sjmp	00004$

			00003$:
			//	jbc		_TCON.7, 0002$
				jbc		TF1, 0002$
				sjmp	00003$

			00004$:

			__endasm;