Abit KT7A arrived today, tested with the YMF719 ISA card, still doesn't output any PCM audio. Tested on Win98 and XP. So it seems there's a problem between the KT133(A) chipset and this particular ISA card (or maybe there's a non-standard ISA implemented on these boards, and there could be more than just YMF719 cards misbehaving, but that requires some extensive testing with a bunch of soundcards).