Dale -
You are correct in your assumption, but only if the 8-bit card will run at
the ISA bus speed the motherboard uses. Some older 8-bit cards won't run
reliably at >4.77MHz, since they were designed for the PC and XT, not the
later "TurboXT" that eventually became the ISA 8-bit standard.
Most CMOS Setup programs have an option to set the ISA bus speed, typically
to the CPU clock speed divided by some small integer, like 3, 4, or 5. For
example, a 386DX-33 with a divisor of 4 would be running the ISA bus at
8.25MHz, close enough to the spec that it shouldn't matter. Using a divisor
of 3 would yield an ISA bus speed of 11MHz - Not a good idea, there are I/O
cards that just won't work at that speed, for instance the Media Vision Pro
Audio sound cards.
Dave
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