A Linux user with a 1212m allowed me to log in via ssh, and I loaded the
(patched - see my previous post) emu10k1 driver.  No sound, but it's
promising.  I played something with aplay and the bits showed up in the
cache data registers, but the wavetable synth seemed to fail silently
without allocating any voices.  Probably they disabled it (it's not
mentioned in the datasheet).

The IO registers confirm that it does not use the p16v chip - they
appear to have modified the emu10k2 core to run at 44.1, 48, 96, and 192
KHz.

I suspect that the ADCs might be wired to the mysterious "EMU32" ports,
rather than the EXTIN/EXTOUTs.  Probably the EXTIN/EXTOUTs are hardware
limited to 16 bit ADC connections.

1302 
1303 #define A_FXBUS(x)      (0x00 + (x))    /* x = 0x00 - 0x3f FX buses */
1304 #define A_EXTIN(x)      (0x40 + (x))    /* x = 0x00 - 0x0f physical ins */
1305 #define A_P16VIN(x)     (0x50 + (x))    /* x = 0x00 - 0x0f p16v ins (A2 only) "EMU32 inputs" */
1306 #define A_EXTOUT(x)     (0x60 + (x))    /* x = 0x00 - 0x1f physical outs -> A_FXWC1 0x79-7f unknown   */
1307 #define A_FXBUS2(x)     (0x80 + (x))    /* x = 0x00 - 0x1f extra outs used for EFX capture -> A_FXWC2 */
1308 #define A_EMU32OUTH(x)  (0xa0 + (x))    /* x = 0x00 - 0x0f "EMU32_OUT_10 - _1F" - ??? */
1309 #define A_EMU32OUTL(x)  (0xb0 + (x))    /* x = 0x00 - 0x0f "EMU32_OUT_1 - _F" - ??? */
1310 #define A_GPR(x)        (A_FXGPREGBASE + (x))
1311 

So, the next thing to try is to connect the FX buses to those EMU32 outs
and see what happens.

Anyway here's a dump of /proc/asound/1212m.

Jame, any news from EMU on a hardware sample? ;-)

Lee