Search found 35 matches
- Wed Apr 04, 2018 6:23 pm
- Forum: SNESdev
- Topic: Compiling Verilog into SW Emulators
- Replies: 1
- Views: 3176
Compiling Verilog into SW Emulators
Hi All! With FPGA consoles and new SD2SNES co-processor cores being all the rage these days I feel like verilog and retro FPGA HW development is starting to heat up. For those interested in playing around with verilog I created a neat example of compiling a verilog model into C++ (using Verilator) a...
- Sun Dec 04, 2016 2:36 pm
- Forum: SNESdev
- Topic: Interest in "modern" SNES Development Hardware?
- Replies: 153
- Views: 50403
Re: Interest in "modern" SNES Development Hardware?
I agree 100% with your ambitions to bring home brew hardware into this community. That is also my goal as well with 21FX-TL and EP. The fact that SD2SNES was open source helped me so much and I want to keep creating new hardware and help out others. With that spirit all the hardware I make I will re...
- Thu Dec 01, 2016 1:20 pm
- Forum: SNESdev
- Topic: Questions on SNES APU Hardware
- Replies: 13
- Views: 5559
Re: Questions on SNES APU Hardware
ah thanks for the example, I stand corrected! That must be some really tight timing and short strides in any case back to the original point. If you were to redirect a non-DMA APU access you could perform the same re-direction on a DMA APU access (via /PARD /PAWR proxy or ROM patching).
- Thu Dec 01, 2016 1:07 pm
- Forum: SNESdev
- Topic: Questions on SNES APU Hardware
- Replies: 13
- Views: 5559
Re: Questions on SNES APU Hardware
Even though many games would use the IPLROM to transfer Blocks of data, there is still the possibility of implementing your own upload and download routines for the SMP. As long as it is not 100% proven that all official games use the "common-sense" way of transfering data (N-SPC APU driv...
- Thu Dec 01, 2016 11:33 am
- Forum: SNESdev
- Topic: Questions on SNES APU Hardware
- Replies: 13
- Views: 5559
Re: Questions on SNES APU Hardware
OK! well good luck on your architecture. I'm curious of your findings as you progress. I think a number of these implementations are worth looking into at some level. For me I think I may not pursue a "one size fits all" APU load/save solution, most likely i'll figure out solutions per ROM...
- Thu Dec 01, 2016 9:11 am
- Forum: SNESdev
- Topic: Questions on SNES APU Hardware
- Replies: 13
- Views: 5559
Re: Questions on SNES APU Hardware
...The FPGA APU would work from the cartridge port without any mods, you actually just need to reset the /MUTE Bit in the original APU control register and then put it in an endless loop... Fair enough, if that is the case then what I would do is look into creating either 1) an FPGA "Man in th...
- Wed Nov 30, 2016 5:45 pm
- Forum: SNESdev
- Topic: Questions on SNES APU Hardware
- Replies: 13
- Views: 5559
Re: Questions on SNES APU Hardware
Funny that you posted. I've created FPGA/CPLD hardware in the past that has performed load/save states on console (SNESTap, 21FX) and im working on a final variant 21FX-Toploader (MITM style cart): https://pbs.twimg.com/media/Cx2Lf0XXcAA4q3L.png , boards come in sometime this week. I've learned to j...
- Tue Nov 22, 2016 11:27 am
- Forum: SNESdev
- Topic: Introducing the VeriSNES (FPGA-based SNES)
- Replies: 307
- Views: 223629
Re: Introducing the VeriSNES (FPGA-based SNES)
Do you plan to make this public once it reaches some state of completion, or are you keeping it private for a product that you plan to sell? I would love for this community to have open source hardware :) .. However I understand and respect the author's decision either way. There has been a closed ...
- Sun May 01, 2016 11:19 pm
- Forum: SNESdev
- Topic: Some 21fx questions (attn: byuu)
- Replies: 12
- Views: 5421
Re: Some 21fx questions (attn: byuu)
FYI, since I mentioned it above. Here is some results of NMI hooking for load/save state of RAM and SuperFX.
https://t.co/wDfukT6LbR
https://t.co/VhwuNqdQpj
https://t.co/wDfukT6LbR
https://t.co/VhwuNqdQpj
- Sun May 01, 2016 6:54 pm
- Forum: SNESdev
- Topic: Some 21fx questions (attn: byuu)
- Replies: 12
- Views: 5421
Re: Some 21fx questions (attn: byuu)
>I still don't really get how this can work. The SMP is pretty much a black box. There's no way to reset it at will, short of the horrendous /RESET line assertion, which would cause lots of other issues if you were trying to deserialize to a clean state. And there's definitely no way to read out its...
- Sun May 01, 2016 3:13 pm
- Forum: SNESdev
- Topic: Some 21fx questions (attn: byuu)
- Replies: 12
- Views: 5421
Re: Some 21fx questions (attn: byuu)
So I haven't spoken too much about NMI/IRQ/*-vector hooking because 1) The primary intention of 21FX is for cart dumping and cart research and 2) hooking non-reset vectors is a very experimental feature. As byuu put it, there is no 1-size fits all solution to hooking non-reset vectors for all carts,...
- Sun Jan 03, 2016 3:02 pm
- Forum: SNESdev
- Topic: Super FX chip recreation
- Replies: 40
- Views: 20392
Re: Super FX chip recreation
So what I was suggesting wasn't to upgrade native SNES graphics to anything that modern consoles can do today, nor was I suggesting to just attach an ARM to a cart and emulate a whole bunch of graphics co-processors. What I see today is that a fair number of people seem to own SD2SNES (so you have a...
- Sat Jan 02, 2016 8:37 am
- Forum: SNESdev
- Topic: Super FX chip recreation
- Replies: 40
- Views: 20392
Re: Super FX chip recreation
All interesting ideas. The FPGA on the SD2SNES could be used be used to develop support for the remaining unsupported coprocessors (i.e. SA-1, SuperFX) and could be used to define a new community designed graphics accelerator. A new graphics accelerator wouldn't have to be a complicated CPU with its...
- Tue Dec 29, 2015 7:53 am
- Forum: SNESdev
- Topic: HDMI SNES?
- Replies: 46
- Views: 27060
Re: HDMI SNES?
So when I was hacking around with the expansion port (see snes-tap) I was able to passively snoop all reads and writes on route to the CPU/APU from my FPGA. With all this data snooped I had the FPGA forward it to my laptop through a FTDI USB 2.0 device. On my laptop I had a re-compiled version of Sn...
- Wed Sep 30, 2015 1:36 am
- Forum: SNESdev
- Topic: SNES-Tap: save your game whenever you want... really?
- Replies: 49
- Views: 16137
Re: SNES-Tap: save your game whenever you want... really?
OK so I moved the SNES-Hook discussion to a different thread.
Here is a quick update on SNES-Tap!
https://www.youtube.com/watch?v=dE_q4EpsLco
Thanks,
defparam
Here is a quick update on SNES-Tap!
https://www.youtube.com/watch?v=dE_q4EpsLco
Thanks,
defparam