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Re: Is there any ISA sound card that only needs +5V

Most ICs would actually be quite happy with +5V alone. But, since you want to decouple from all the noise in the system's power rails, often linear regulators are used to provide a clean(er) 5 volts on audio cards. To do this, you need to come in somewhat higher, which ends up being the second …

Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Yeah there is a limitation with the Apogee Sound System, it doesn't like GUS devices with IRQ higher than 7. I've never looked into why exists this limitation, but the developers did it anyway: There seems to be a small hint in the notes you linked: - GUS only supports IRQs below 8. At higher IRQs, …

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