picbasic +12c508a+soft_stack error

[mister_e]

You know what that means RIGHT?
Yup, this ain't over yet!

yup.. sounds like a challenge... 100% PBP??? Maybe doable... scratch, scratch...mmm...

[Darrel Taylor]

12C508A's bad enough,
you want 100% PBP??? too?

Did you know it doesn't even have an overflow flag on timer0?
I didn't, Oi vey!

I had so much fun this time last year with what ended up as the 12-byte cylon scanner,
perhaps I'm a bit over zealous.

The OP is satisfied, and probably wouldn't use it anyways,
So even if the program size was only 83 words, like I have it now,
It'll never be used.

We need a real Optimization contest.
They're just too fun.
<br>

[mister_e]

yup, no eeprom either... so nothing interesting. Think it's like a 16F84A, 16C54... but in 8 pin package

There's always place for an optimization contest, next time, no rules (pic, language etc etc )... agreed?

[skimask]

yup, no eeprom either... so nothing interesting. Think it's like a 16F84A, 16C54... but in 8 pin package
There's always place for an optimization contest, next time, no rules (pic, language etc etc )... agreed?

Make it tough...use a 10F200...no SOT->DIP adapters allowed, only hand soldering, dead bug style. In fact, no soldering, hand wrap wires around the legs....
and no power supply, hand crank a motor to charge up a cap...

[Bruce]

Any chance we can see that 12-byte cylon scanner?

[Darrel Taylor]

Sure,

The 12-byte version is toward the end on page 2.
http://www.sfcompiler.co.uk/forum/viewtopic.php?t=72

Edit: Hey, you were there to.
<br>

[Bruce]

Yipes I totally forgot that one. That was way interesting and the end result was really creative.

Nice work DT..;o}

Tim B and I got into one of these a long time back, and here's one he came up with.

Can we beat this without EEPROM?

Standard cyclone thingie moving the LED back & forth with ~1S delay periods.

  	list      p=16F628A
	#include "P16F628A.inc"
	errorlevel  -302        ; suppress message 302 from list file
	__CONFIG _CP_OFF & _BODEN_ON & _MCLRE_ON & _WDT_ON & _PWRTE_ON & _LVP_OFF & _INTOSC_OSC_NOCLKOUT

	movlw	0x01
	movwf	PORTB	     ; Set Portb,0
	bsf	STATUS,RP0   ; Bank 1
	clrf	TRISB	     ; RB all outputs
	bcf	OPTION_REG,0 ; 1:64 prescaler to WDT
	bcf	STATUS,RP0   ; Bank 0

Left
	sleep		    ; go to sleep for 64 * 18mS ~1 second
	rlf	PORTB,F     ; rotate bit across portb from lsb to msb
	btfss	PORTB,7     ; jump to Right after Portb,7 = 1
	goto	Left
	
Right
	sleep		    ; go to sleep for 64 * 18mS ~1 second
	rrf	PORTB,F     ; rotate bit across Portb from msb to lsb
	btfss	PORTB,0     ; jump back to left after Portb,0 = 1
	goto	Right       ; loop until Portb,0 = 1
	goto	Left        ; now rotate back to the left.
	
    End

[mister_e]

seems to be hardly optimized to me

food for thought... let's see...