MiniMig with AGA

[NovaCoder]

So, soft-core porn is OK?

I have to spend my time doing something....

[Darrin]

"Only 32? :-( "
Sorry, it's 64MByte. The schematic is correct, my memory isn't
/Mike

Damn, your memory is fading badly!  You forgot to mention the built in Radeon 7200 RTG emulation using Picasso 2010, the 5 Zorro IV slots & 5 PCI slots on the bottom of the mobo and the softcore 3GHz PPC core for running OS4.3.

... and 10 A1200 type clock ports.

[unknown1]

Finally found mikej's posting on pricing back on page 40!!

Replay RevB Pricing.

The exchange rates are all over the place, and until I get production scheduled and the boards in my hand these prices are subject to change.

The NRE costs for production are much higher than I expected, so I have to recover some of these costs over the first 50 boards.

So, the full card (with SVHS/Composite out) is looking like 220Euro today. The "light" card without SVHS/composite is 200Euro. Thats about the same as a Minimig with the memory upgrade, and what I've been saying all along.

The bad news is I have to pay sales tax here on the first boards, so thats an additional 25%. I'll include a EU plug power supply for the first 50 boards

Being totally honest up-front, boards after the first 50 will be at least 25% cheaper and sales tax will be payable on import if you are outside the EU so thats another 25%.

From the quotes I've been getting from China we should be able to get down to 150 Euros for the fully loaded board for production quantities, assuming there is enough interest after the first 50.

I have all the parts for the first 50 so they are going to happen for sure, after that I'll set up a list - if we get to 50 or more we'll do another run.

I'll mail all of you who have expressed an interested with a firm price when the board is finally ready for shipping.

Let me know what you think.
/Mike

Sounds reasonable to me...

[NovaCoder]

Can I ask a stupid question.

This board is meant to fix in a standard PC Mini-IT type case but the ports don't appear to all on the same side so how will this work?

Also are we going to have another ACube situ with a lack of metal with holes in type deal?



This thread is almost at 100k views (currently 99,022), that's pretty damn impressive don't ya think?

[mikej]

All the important ports are in the ATX window at the back.
On the side is the micro-usb used for updating the ARM firmware, and maybe connecting USB peripherals in the future. There is a header on the board so you can cable this off to a back panel if you want.

The serial port is on the other side, but this is primarily used for debug and not necessary normally.

Power is on the other side as well. If it is a case you would use either the molex or the two pin 5v pin header for power input.

The holes line up with the ATX case spec (well, the two that can do do, but it's quite solid).

I'm talking to some manufactures about a IO panel for the atx/itx cases.

Best,
Mike

[yaqube]

The newest Minimig AGA core has just got a 16-bit AHI support for the Replay's Audio DAC.
The playback is DMA driven with very versatile sampling frequency selection.
Some other improvements are planned for the future.

[Hattig]

That's good news! I didn't even know that the Replay had a different audio mechanism. Does it mix with the standard Amiga audio output?

[Gulliver]

Great, now its time to hack a Picasso96 gfx driver!!!  

[freqmax]

Rather a Picasso96 re-implementation.. as drivers are likely to already exist.

However I suspect the softcore CPU, and other basic functions need more work before other stuff can be dealt with efficiently.

[yaqube]

That's good news! I didn't even know that the Replay had a different audio mechanism. Does it mix with the standard Amiga audio output?

The Replay is equipped with 24-bit Audio DAC (capable of 192 kHz sampling rate) but right now only 16-bit precision is used. It may change when the CPU core is fast enough to mix channels in the Hi-Fi mode with reasonable rate but I'm rather sceptical if it's of any use as the noise floor of the board isn't as low.

Does it mix with the standard Amiga audio output?

The standard Amiga audio output is mixed with the 16-bit AHI output.

Great, now its time to hack a Picasso96 gfx driver!!!  

I think I have enough information to write a new one from scratch. Only time is the limit.

[Hattig]

Can the DAC also do sampling in? Of course that would require a Mic input...

Good work, btw, both yaqube and mikej. It's much appreciated.

[yaqube]

Can the DAC also do sampling in? Of course that would require a Mic input...

No, a DAC connot sample incoming signal. That's the task for an ADC (or a codec which integrates DACs and ADCs).

[freqmax]

I think he meant if the Replay Audio implementation can record (sample) as well. Ofcourse it would require an physical ADC. A stopgap fix could be to (mis)use an LVTTL input for 1-bit sampling.

[yaqube]

Any link that describe the "Replay" hardware in detail?

Only schematics available.

[freqmax]

I think I got temporarly confused with the Action Replay.. didn't recall any audio capabilty there..

Looking at the schematics I can see 5 possible solutions:
 (0) Resistor + Zener protect a single LVDS configured pin. Misused for 1-bit clipped sampling.
 (1) Connect an ordinary I2S ADC (possible integrated ADC/DAC) to free FPGA pins.
 (2) Use the ARM controller AT91SAM7S256-AU-001 "ADC..BUS[3:0]" which is connected to the AD4-7 multiplexed ADC inputs capable of 583 ksps. Provided there's time and codespace for this ..?
 (3) Connect the ARM USB port to a PC which is used for input.
 (4) Use some I/O on the FPGA as USB port, and connect an ordinary USB-audio device.

Is there any BOM (parts list), netlist (connection dump), gerber (layout) files available?

Thx for the link btw.

[Darrin]

I think I have enough information to write a new one from scratch. Only time is the limit.

Looks like my joke about "Picasso 2010" wasn't too far off the mark!  Picasso 2011?