Watchdog disable bit (WDOG_CS1 b7) isn't working on a PA4.

[CustomSarge]

I set an infinite loop, just after program start. If a reset happens it saves the SYS_SRS and loops on resetting watchdog until I manually suspend. It shows a watchdog reset occurred ($20) regardless of watchdog disabled bit. I'm I missing something?  I'm next going to set the watchdog clock to external, which doesn't exist, so should never count.

[CustomSarge · Accepted solution]

Again, more carefully read... I see the "unlock" for config access.

Oh, that And you have to write all registers, exc Window, unless selected.

Boy the latest generation is a Lot different.

Somebody lost a lot of sleep thinking this one up.

[CustomSarge]

Found something interesting...

LDHX   #$xxxx

STHX   WDOG_TOVAL

doesn't seem to satisfy the "set all register" rule

(watchdog TOs still happen)

LDA   #$xx

STA   WDOG_TOVALH

LDA   #$xx

STA   WDOG_TOVALL

does (TOs don't happen)... HMMM