Re: [AL] Sound

[Russ G. <ru...@rn...>]

Quantum <al...@ho...> wrote:
>Anyway, to keep this at least slightly Allegro related I'd really
appreciate
>it if someone who has the knowledge would write a SBLive driver (even w/o
>all the Live specific features).  From what I read I think that SBLive
has a
>SB16 compatibility mode or something like that.  I'll try looking into
it,
>but since I have no idea how drivers work I doubt I'll find anything
useful.

The reason the existing AWE32/AWE64 drivers don't work is because of the
switch to the PCI bus.  It is not *possible* to emulate the SB16 hardware
I/O from the PCI bus - its a physical limitation.  The ISA bus allows one
to pretty much specify whatever i/o ports and IRQ's that is desired.  In
contrast, each PCI slot has a specified IRQ and address range (with good
bios's, one can even set this, some what).  That is also why they provided
a software emulation driver as well as a cable (well, that can be baught,
if you purchased the value edition...) that can be plugged into a
motherboard to allow true hardware emualtion.

I don't *think* it will take much to get the existing drivers to work - as
it should mostly be allowing the different address/irq combinations (in
fact, that may be all...);  Since I haven't looked at the SB Live code in
XFree yet, and I haven't received my EMU10K doc's yet, I don't know for
sure...

I will shortly.

--> Russ