PABEOL escribió:En AtariAge, un usuario que entiende de hardware explica las
múltiples razones por la que la placa de Alejandro nunca podrá leer ni ejecutar jueguitos:
that pcb is not running any games, and cannot run a single game. it is missing... everything. there's no power supplies to run the FPGA. there's no RAM (they do show a DDR3 or DDR4 RAM module plugged in, but it is not connected to the FPGA, and it is simply too far away from it to actually function if it was even hooked up (dat speed of light). There's no HDMI drivers of any kind. Just... EVERYTHING is missing that is required to make it work.
Checking out the videos (I downloaded and saved all of them in case they poof), they show decent shots of the PCB front and back at various points, and there aren't even any traces going to most of that stuff! There's no connections to the cartridge slots, controller ports, video ports. The two HDMI sockets on the back appear to just be connected in parallel to each other, like a passthrough. The front USB connects to the back USB like a passthrough, which is how he can run a controller through it. It is not connected to the FPGA in any way.
I laughed so much at their "demonstration" video- you can see him turn the computer on behind the monitor at the start! And then he fakes the whole "blowing in the carts" thing, and hits a button on the controller to make it display the cart is installed. Then there's that obvious jump cut when the game starts. come on. who are you fooling? If you look, the board isn't even on. The fan's not turning (we'd hear it easily, with all the other ambient noise) and the LEDs aren't lit. It's just a fancy USB passthrough for the controller.
There is only a single 5V supply (lol) on the board. The FPGA will require something like 1V at 10-15 amps, along with 3-4 other voltages for RAM, HDMI, and other doodads. There is a CF card and an SD slot on the left, but you can see that they are both connected to an arduino and CPLD each and nowhere else. There's another arduino CPU and CPLD by the FPGA which appears to do nothing; it does not seem to be connected to anything. The FPGA is literally not connected to anything either- there is a shot where the chip isn't present and it's just a bare footprint. A couple big ceramic caps around the FPGA for... some purpose. The FPGA needs a lot of decoupling capacitors around it- and more importantly UNDER it- probably 40-60 or more. Those obviously aren't present.
The LEDs make me laugh. There's 8 LEDs and two chips to run them, probably something like a 555 timer and a binary counter or similar to make blinkenlites. They do not connect to anything except 5V.
Also, the PCB is 2 layers. a real board to use that FPGA would need to be at least 8 layers probably. I bet the PCB house that made and assembled it was like "wtf" when they saw it.
Going by the videos and PCB, this cannot work as it sits, and never was designed to work. They just threw some random parts onto a PCB and made it look like they knew what they were doing. They don't. I noticed too that the heatsink is way too high up off the pcb, so it's probably just hovering over that FPGA. But that's fine- the FPGA isn't even connected to anything so it won't be getting hot or anything.
It is debatable if this is a step up or down from the retroPOS. They did make a cardboard "PCB" and glued electronic parts on it. This is a real PCB, and has parts soldered to it, but those parts aren't even connected- at least the "important" ones (controller ports, cart ports, RAM, FPGA).
If you give these dorks money, you most likely are not going to see it again, and you won't be getting an FPGA system that works unless they totally redesign it.
Leyendo esto y viendo todo creo que ya se donde está el truco.
¿Os habeis fijado en la entrada auxiliar de 5V?
O lo que él dice que es una entrada auxiliar de 5V "para el firmware".
Esa entrada es una entrada USB normal y corriente, de las grandes. Yo no he visto nunca una entrada de alimenacion USB de las grandes, igual se usan pero no es lo normal para este tipo de aparatos. El dice que va conectada a la tele y que alimenta los 5 V. Tendria sentido si es para conectarle un pincho USB para actualizar y demas pero para alimentacion es extraño que se use ese puerto.
¿Que hace ese puerto realmente? Ese puerto está conectado directamente a un ordenador o algo similar que es el que realmente esta ejecutandolo todo. Y el mando que conecta a la super sega lo controla.
Ese conector USB no es una entrada de alimentacion es una salida para el controlador de la Xbox.
La super sega es en realidad un enorme HUB USB. Su unica función es hacer de puente entre el mando y el ordenador que habrá en algún sitio.
Ese puerto USB es el truco de todo.
Fijaos como estando el interruptor general apagado el mando sincroniza, sincroniza porque esta conectado a otro dispisitivo a traves de ese puerto USB. Tambien se puede ver, como mostró Giru en su video, como cuando se supone que pulsa el boton reset de la consola en realidad esta pulsando una combinacion de botones del mando, el boton reset no sirve para nada como casi nada de lo que hay en esa placa.
Y alquien que estará a pocos metros controla ese ordenador con un raton inalambrico.
Edtio: Aqui esta la prueba:
Fijaos como el puerto frontal USB está conectado directamente con la supuesta "alimentacion auxiliar para el firmware" de 5v trasera. En la imagen no se ve del todo bien pero se aprecia como la pista continua hasta llegar al USB trasero.
El mando tiene conexion directa con ese conector.
![[qmparto]](/images/smilies/net_quemeparto.gif "Que me parto!")
.![[+risas]](/images/smilies/nuevos/risa_ani3.gif "más risas")
![[carcajad]](/images/smilies/nuevos/risa_ani2.gif "carcajada")
. 
porque estando el cartucho de Máster puesto en el Slot no lo detecta la interfaz cuando va a lanzar el Panzer ☝️🤔.
