MiSTer FPGA Forum

I ordered from Nat, and i'm very pleased! :) I had just gotten my de10 nano from digikey, and failed to realise the importance of a proper heatsink... they didn't have to model i wanted anyway... so i didn't order from them, not even from Nat. However, with my order, which was a 32mb sdram and a 4amps psu and a psu switch shunt, Nat had sent me a l...

That's why i designed the pcb with only 10bit dacs... i knew already back then that only 9bits was needed, due to the pwm.

And i BADLY want to connect it to the Mister to feed it raw Paula dat, straight to the parallel interfaced 10bit dacs.... both filter and the LF347 love og God, opamp! I really love the sound and personality of that opamp! For me, it is what makes the Amiga sound so special..... not Paula... yes, a good deal, but it's opamp that really forms the so...

I got it all in hardware! My great pride, first and only pcb i'we ever made!

Steeper yes, -12db pr octave... and about 3khz cutoff i think.... it's hard to understand the analog electronics, which path has which cutoff value, from capacitors and resistors... the 2 pole led filter has a "weird" configuration in real life... :D one pole is at about 3khz and the other is at about 3.4khz if i remember correctly... Yes...

Am gonna fix the led filters too... later... i have it implemented already, but only in the multicycle version, which only works with both filters enabled using fixed point math.... Hey Rob.... could you please add some filter selector mechanism to the osd menu for me please, and share the code? I dont know that stuff quite well myself yet... I nee...

Well, mine IS free running, if i remember the state machine correctly, i tried the reset for each new sample approach last year, and it didn't seem right... to my ear. I only commented out the //volcntr stuff from the state machine that was already there... AND added the counter and gating mechanism, plus the notch filter... but it makes all the di...

But we really need 20bits hdmi audio output in the framework! For headroom in regards to mixing many 16 bits streams together without having to halve the volumes before mixing, of having to clamp and hardclip the mix. 20bit 192Khz HDMI audio would be nice!

Now... who knows hdmi enough to fix that?

Hey Robinson, you were right! It looks like the weird stuff being talked about here indeed is a clock domain crossover, i re enabled it, and now both the old multiplier volume paula, and the new pwm volumed paula works perfectly fine! :) I am having some trouble with my filter now on the mister, i am currently testing the filter on both sample stre...

Aha, Robinson... that would explain a couple of thing during my test runs. The first build had a smaller rbf, and had no hdmi picture sync, but audio fell through occasionally, the second build worked fine, but the sound was metallic and awful, as if the framework filters didn't operate at the correct frequency, too little cutoff.... BUT the boom f...

Am compiling a first mister port of my mist paula now... but without filters, first run. Will you the framework filter at 4khz for that to begin with, due to long compile time... and possible constraint errors with the float maths.... Have sat up the core such that the LED controls a switch between the old behavour and my new implementation of the ...

Cores should output at 16bits.. but the framework should mix and work and output at 20bits.. for headroom! Really! ;) Also... what if a core output 8 bits...... AND you just sign extend that up to 16bits..... what happens then? eh.... you get very low sound output! And have to mick around with 2x 4x 8x output fixes (wrong!), as is currently done in...

From the Amiga core, emu top module... reg [15:0] aud_l, aud_r; always @(posedge CLK_AUDIO) begin reg [15:0] old_l0, old_l1, old_r0, old_r1; old_l0 <= {ldata[14],ldata}; old_l1 <= old_l0; if(old_l0 == old_l1) aud_l <= old_l1; old_r0 <= {rdata[14],rdata}; old_r1 <= old_r0; if(old_r0 == old_r1) aud_r <= old_r1; end Whatta F..... IS this?! What are yo...

Hi guys! I want to hook up my custom Amiga audio DAC to the MISTer, for now my board has a 10x2 parallel interface (Stereo), and one LED filter pin, and i am thinking about hacking my own local version of the SYS framework and the minimig core, to be able to output directly from minimig Paula to by PCB DACs... first... just to test it for a very fi...