What are the best IRQ and DMA and memory settings for hardware in DOS and Windows ?
Is there a known list of recommendations ?
Holy cow what is your aversion to pertinent details? What hardware? What Windows?
EDIT:
Maybe this is of interest? http://www.catb.org/~esr/faqs/smart-questions.html
Maybe not!
Life? Don't talk to me about life.
Any configuration that does not share IRQs or DMAs will be fine.
I have traveled across the universe and through the years to find Her.
Sometimes going all the way is just a start...
@badmojo Cool, never seen that page - thanks for the link! 😎
wrote:What are the best IRQ and DMA and memory settings for hardware in DOS and Windows ?
Is there a known list of recommendations ?
Hi, I'd go with the default settings, since some applications are hard-coded to them.
Here you find the standard resources (IRQ/DMA etc.) of the PC/AT architecture.
http://www.folder101.com/CompHardware/Notes/E … ses/IRQ_DMA.htm
https://ccm.net/contents/394-hardware-interru … q-and-conflicts
https://en.wikipedia.org/wiki/Interrupt ... )#Overview
http://www.pchell.com/hardware/irqs.shtml
http://www.escotal.com/IRQ.html
In case of Sound Blasters, the defaults are:
IRQ7, DMA1, HIGH DMA5, Port 220h;
IRQ5 is often used in ATs, too, but never in XTs (since IRQ5 used by HDD).
IRQ7 is more compatible, since some games were hard-coded to that (Prince of Persia ?)
MPU-401 (MIDI): IRQ2/9, Port 330h for MT-32 (or GM), Port 300h for General MIDI
SB-MIDI: Port 220h (the default address of Sound Blaster DSP)
AdLib Port 388/389h
GamePort: Port 201h
Edit: Typos fixed.
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wrote:In case of Sound Blasters, the defaults are:
Early Sound Blasters did indeed have IRQ7 as default factory configuration.
I believe however that somewhere during the lifetime of the Sound Blaster Pro 2, the default was changed to IRQ5.
I've seen many SB Pro 2 and later cards (SB16 etc) configured to IRQ5, so I believe they came factory-configured that way.
But indeed, some early SB software is hardcoded to IRQ7, so that is the most compatible option.
