romanrex
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Rev.B two generators and two quartz
Rev.3 only two quarts
Why?
Rev.3 only two quarts
Why?
Lost two generators E-MU1212m Rev.3 ?
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Glassman
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Rev 3 looks like some old prototype, notice the ADAT chip with Alesis marking on Rev 3 vs. Wavefront on Rev B.. regarding the oscillator and crystal count, they probably planned to do what they did with 0404, which is using PLL to generate clocks instead of fixed oscillators..
Malus
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This is a little off topic, but I never noticed the Xilinx chip on the board. I didn't realize that they have incorporated an FPGA into the sound card. I wonder if there is a way to reprogram it.
Glassman
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it's being reprogrammed every time the drivers are loading
you haven't noticed since they put E-MU E-DSP sticker on it usually.. maybe you haven't noticed the main chip being plain Audigy EMU10k2 DSP
one sure could hook up JTAG cable and read the program off the FPGA and possibely alter a bit, also I'd say you would find the configuration streem inside some of the driver files..
one sure could hook up JTAG cable and read the program off the FPGA and possibely alter a bit, also I'd say you would find the configuration streem inside some of the driver files..
Malus
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Quote:
I knew about the DSP already, I just never noticed the Xilinx chip. I guess that explains the firmware updates with every driver revision. I'm almost tempted to fiddle with the program on the chip.
| Originally Posted by Glassman it's being reprogrammed every time the drivers are loading
one sure could hook up JTAG cable and read the program off the FPGA and possibely alter a bit, also I'd say you would find the configuration streem inside some of the driver files.. |
I knew about the DSP already, I just never noticed the Xilinx chip. I guess that explains the firmware updates with every driver revision. I'm almost tempted to fiddle with the program on the chip.
Glassman
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it also enable the EMU10k2 to work with higher samplerates as well as true 44.1 multiples, the oscillators are connected to the FPGA and clocks out the data from it.. I don't think you could do anything useful with it short of switching the DAC's digital filter from sharp to slow.. I for one would love to see 88.2 and 176.4 rates, but that would require new drivers too :-/
Malus
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Quote:
The rates should be relatively easy to add in the hardware, but I would have a hell of a time reverse engineering the drivers.
| Originally Posted by Glassman it also enable the EMU10k2 to work with higher samplerates as well as true 44.1 multiples, the oscillators are connected to the FPGA and clocks out the data from it.. I don't think you could do anything useful with it short of switching the DAC's digital filter from sharp to slow.. I for one would love to see 88.2 and 176.4 rates, but that would require new drivers too :-/ |
The rates should be relatively easy to add in the hardware, but I would have a hell of a time reverse engineering the drivers.
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