RTC problem on MVS

pnauts

Kuroko's Training Dummy
Joined
Jun 7, 2017
Posts
76
Hi, I have a uncommon problem with this function.
Quartz 32,768 Khz is ok, 4990 also, I test with another one chip. I swapped also the NEO-F0, the problem is similar.
when I access to the RTC screen with Diagnostioc bios there is a random reset which occurs (most quickly with higher frequency but the reset doesn't reach the same value).
In which chip the watchdog function is done ?

edit: with unibios, black screen. With OEM EPROM "Calendar error" message.
 
Last edited:

Xian Xi

JammaNationX,
Joined
Dec 1, 2005
Posts
27,702
Usually the B1 even video interrupts can trigger a reset from incompatible fast video ram.
 

pnauts

Kuroko's Training Dummy
Joined
Jun 7, 2017
Posts
76
it's a 1st gen, A0-B0-C0.
FVRAM are the same that my others slot.
other selftest are ok.

edit: what do you call Even signal on neo-B1 ?
 
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