By my calculations 8Mbits is enough for 11.36 seconds of 16 bit mono audio, or 6.58 seconds of stereo at 44kHz.
With the current configuration there is 1Mb (megabyte) external SRAM for heap (buffers), 64Kb CCM for stack, and 64Kb SRAM for code. Plus 48Kb SRAM used by the firmware. This can be reconfigured in different ways.
1Mb is 5.46 seconds of 32-bit floats at 48kHz, which is the default sampling rate and data type.
The device also has 1Mb Flash memory, used by the bootloader, firmware, factory patches, and user programs.
midiguru wrote:The photo has 8 knobs, not 4. It seems to have only 4 CV inputs. I see two "push" jacks, which I would guess are for pushbutton equivalents, but there doesn't seem to be a gate in/out.
I'm guessing cv input 5 is the expression input.
That's right, that's the centre jack marked EXP, corresponding to patch parameter E.
The second row of knobs set the amount of CV modulation for parameters A, B, C and D.
The two jacks labelled PUSH are Gate in and out (in on the left, out on the right, as per the stereo in/out labels). It's a lot easier to see the labels clearly when you have the module in front of you.
The LED in the centre is a two-colour illuminated pushbutton.