So, this has perplexed me for a while but I've just accepted it. UNTIL NOW! 😀
My old SBPro defaulted to IRQ 5. SB16 defaults to IRQ5, too. So, why does DOSBOX use 7?
Because the oldest SBPros and SBs defaulted to 7.
I'm not certain, but I thought some very old games also assumed an SB IRQ of 7 and provided no way to tell the game otherwise.
Well if a game is hard-coded for IRQ 7, then it makes sense. Lots of games do seem to default to IRQ 5, however, but they are also re-configurable. And, of course, so is dosbox.conf so it doesn't matter whatsoever. Still an interesting choice to go with IRQ7 and I wondered why.
the reason Great Hierophant is why we chose 7
Water flows down the stream
How to ask questions the smart way!
