Strange behaviour with MATDIM (Advantage ROM) on NoV-64D

[emefff]

Hello,

thank you both for your answers.

@AndiGer: Initially, I had SF 28, that's right. But when I CF 28 and repeat "3,003 ENTER" "XEQ MATDIM", I get the same result "0,3003". When I do "XEQ DIM?" I get:
"001F 0CE ___" ? and I am trapped in some weird state. I have to remove the batts briefly.

Interestingly, "3003 ENTER" "XEQ MATDIM" gives the same result.

FLAG 29 set or not, doesn't have an influence, as FLAG 28 also doesn't.

Thanks,

Mario.