hmmm

rjo__

I'm having problems with both REP... and INA on both de2-115 and P123 A7. I have modified my code to output binary longs to Proptool's Terminal. In rep.jpg I am sending a patterned binary... in response to me typing an "i" into the terminal.

Notice that it repeats indefinitely... whereas in my code it should just output the number once.

In INA.jpg, I am trying to output the value of INA... and get all 1's, when some of them should be zeroes:)

In the what.jpg... I insert an arbitrary line after the end of the repeat loop... and then it only outputs two 1's each time I enter "i." even though it should repeat at least 30 times and give me something each time.

Normally, I am sending serial to a diy terminal and that is when I found the problem with INA... in trying to get something that could be used without my terminal, I generated this code and along the way found a problem with REP.

ozpropdev

Rich
You cannot use CALLs/JMPs in a REP loop

rjo__

now you tell me:)

What's the deal with INA?

I have no problem transmitting any other long:)

ozpropdev

I checked out INA on my P123-A7 board.
Here's the code used.

'INA test P123-A7

dat		orgh
		org

		setb	outb,#62
		setb	dirb,#62

again		mov	ax,ina 
		cmp	bx,ax wz,wc
	if_e	jmp	#again		'if change update value
		mov	bx,ax

		mov	cx,#32	'show binary value
.loop		rcl	ax,#1 wc
		mov	dx,#"0"
	if_c	mov	dx,#"1"
		call	#tx_byte
		djnz	cx,#.loop

		mov	dx,#13
		call	#tx_byte
		jmp	#again


tx_byte		or	dx,#$100	'transmit byte
		shl	dx,#1
		getct	timer
		rep	@.loop,#10
		addct1	timer,bit_time
		testb	dx,#0 wz
		setbnz	outb,#62
		waitct1
		shr	dx,#1
.loop
		ret

bit_time	long	50_000_000 / 115_200		
		
timer		res	1
ax		res	1
bx		res	1
cx		res	1
dx		res	1

Pins were pulled down to GND via resistor and all pins checked out OK.
I'm curious what results you get running the same code.

rjo__

of course it works:)

I wasn't pulling anything low.

wow

rjo__

Thank you