Is there a wise way to debug a large code?

[Jerson]

If you want goto premakro to run when ticker>=150, perhaps you need to reframe that part with the else....endif

I wouldn't mind looking over the code if you want.

[CuriousOne]

"premakro" works fine, when I press a button, it gets called.
The issue as I see, that somehow, HPWM statement, when duty cycle is less than 100%, disrupts the code.
I'm using hardware PWM generators at PORTC.1 for brightness control PWM, and PORTC.2 for alarm buzzer sound

[CuriousOne]

I modified DIMMER subroutine and set it to always make 255 duty cycle - then nothing fails. So how to relate these things together?

[HenrikOlsson]

How often is dimmer called? Every hour, every minute, every time thru the main loop?
What if you make it always outout a dutycycle of 200, which is what it's getting set to 18.00 when the problem starts? Perhaps you have a hardware issue?

Also, as a test try to get rid of the "one-liners" and do:

IF Z2=06 THEN
  HPWM 2,150,2000
ENDIF

IF Z2=08 THEN
  HPWM 2,200,2000
ENDIF

/Henrik.

[CuriousOne]

DIMMER gets called every second. I can fix this, but issue happens each minute, not second.
I tried inserting HPWM 1,200,2000 at random places in main loop - no issues. They only happen when that DIMMER sub is being called.
For the one-liners, they're great way to save yourself from a lot of scrolling, I'm writing code in that way for last 40 years, so I don't think that now is the time to change.
For the hardware issue, ADC reading is done at PORTA.0 and PWM output is at PORTC.1, so I don't think this can be a RMW issue.

The main loop can be divided into the following sections:

1. Get current time (read RTC)
2. If oldminute<>currentminute, then go seganime (animate all segments at each 1 minute change)
3. Convert hours into Z2
4. If autodim is enabled, then goto dimmer
5. alarm check and call subroutine
6. 12/24 hour check and conversion subroutine
7. Display current time routine
8. Keyboard handling code (ADC reading and debouncing)
9. middle dot blinking

[HenrikOlsson]

4. If autodim is enabled, then goto dimmer

GOTO?

For the one-liners, they're great way to save yourself from a lot of scrolling, I'm writing code in that way for last 40 years, so I don't think that now is the time to change.

OK but I thought we've showed by now that PBP is not "the same" as interpreted BASIC on you ZX Spectrum from '82.If you're sure that your one-liners work then fine but you wanted suggestion on how to debug the code and I was trying to give you ideas on what to try but never mind.