Search found 504 matches

by kevtris
Mon Jan 01, 2018 9:11 pm
Forum: NES Hardware and Flash Equipment
Topic: Bootleg Vs. Super Mario Bros Arcade PCB
Replies: 4
Views: 3897

Re: Bootleg Vs. Super Mario Bros Arcade PCB

A very cool and amusing analysis. Can you guess why they took such a convoluted route? Ineptitude? Sheer brilliance and willpower? Cost savings? I wonder why a lot of the bootleg systems out of the far east try to duplicate successful tile-based hardware by using framebuffer-based displays.... do y...
by kevtris
Sun Dec 31, 2017 6:10 pm
Forum: NES Hardware and Flash Equipment
Topic: Bootleg Vs. Super Mario Bros Arcade PCB
Replies: 4
Views: 3897

Bootleg Vs. Super Mario Bros Arcade PCB

Well, awhile back I bought this very strange board off of ebay. It's a clone of Vs. SMB. This in and of itself isn't terribly interesting. What is, is that it does not use the conventional CPU/PPU combo! No sir, they recreated the CPU and PPU functionality in TTL logic! There's a stock 6502 now vs. ...
by kevtris
Fri Dec 08, 2017 11:36 am
Forum: NES Hardware and Flash Equipment
Topic: Details of MMC5 operation
Replies: 12
Views: 7022

Re: Details of MMC5 operation

I am also very curious about the unconnected pins. They are wired and cut out of edge from board, this is super crazy. Also, multimeter test shows internal connection. I think they might be related to the WRAM. https://obrazki.elektroda.pl/3167323600_1512436788_thumb.jpg Nah the answer is a lot mor...
by kevtris
Sun Nov 05, 2017 10:30 pm
Forum: SNESdev
Topic: Introducing the VeriSNES (FPGA-based SNES)
Replies: 307
Views: 135330

Re: Introducing the VeriSNES (FPGA-based SNES)

It seems to be a bit unpleasant to find out Super Nt is released... However the fact that the both are useless fakes soothes the pain. The battle of fakes is coming: who will be more similar to the Original? It could be an exact hardware copy of the original but who needs it? Everyone needs a fake....
by kevtris
Fri Aug 25, 2017 2:43 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

Why is it so hard to get one of these kits ? Each time game-tech.us get a batch, they are sold so quickly that I can't even buy one. It is the same problem with Marshallh's N64 HDMI kit. I know this is a hobbyist project, but there are other projects like Krikzz's that are never out of stock. Unfor...
by kevtris
Thu Jun 22, 2017 8:46 pm
Forum: GBDev
Topic: Concept for actually making VIN useful - "MBC-5B"
Replies: 23
Views: 5990

Re: Concept for actually making VIN useful - "MBC-5B"

[OLDER IMAGE] Did some of the changes, namely went to an OSC, added the decoupling cap, and the resistor from VIN to ground. I also did a little rewiring but I don't think it made much difference. The width of the power traces was fine since I used .5mm (19.86 mils) I suggest a 1uf between the outp...
by kevtris
Wed Jun 21, 2017 12:46 pm
Forum: GBDev
Topic: Concept for actually making VIN useful - "MBC-5B"
Replies: 23
Views: 5990

Re: Concept for actually making VIN useful - "MBC-5B"

https://my.mixtape.moe/yejcdq.png Well, here goes the first proto. This is meant to plug in between the GB itself and a flash cartridge. I don't know if splitting the lines like this and making them this much longer than they need to be will cause any issues. Also, I have no idea if this will work ...
by kevtris
Tue May 02, 2017 7:23 pm
Forum: NES Hardware and Flash Equipment
Topic: Analogue Nt mini - Problem with kevtris' jailbreak firmware
Replies: 2
Views: 2840

Re: Analogue Nt mini - Problem with kevtris' jailbreak firmw

Hi. Need some help here. Hope it's in the right section. I just bought the Analogue Nt mini.. After downloading kevtris' jailbreak firmware v2.0, I followed the instructions and flashed the Nt mini successfully. Now, I've copied my NES ROMs into the correct folder on the SD card, but there's a prob...
by kevtris
Sat Apr 29, 2017 1:35 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

Thank you again Kevtris ! Today i updated the Hi-Def Nes kits in 4 different PAL machines (German, Spanish, Dutch, French - secam) with the v3.01 firmware. All the glitches are gone !!! Simply Amazing ... :D Proof here -> https://youtu.be/oQx4ucVmeQI Best Regards Bjorn awesome! so glad it worked!
by kevtris
Thu Apr 27, 2017 12:13 am
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

I slightly changed the way DPCM works, so it should be correct now with regards to retriggering it. It will only retrigger now if the sample is done playing, instead of retriggering no matter what. Also, I bumped the volume up by a factor of 4 for sunsoft 5B since it was kinda quiet. I noticed somet...
by kevtris
Wed Apr 26, 2017 4:39 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

Hey Kevtris got a quick question for you. ive heard that the hdmi nes mod chip has the foot prints for the copy nes but there is no hardware revision with a usb port yet. so my question is can a usb be soldered on the chip manually in order to use the copy nes function? also when is a usb port revi...
by kevtris
Wed Apr 26, 2017 12:31 am
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

Well here it is, after 14 months! http://blog.kevtris.org/blogfiles/HiDefNES%20Update%20V3.00%20beta.nes Changes: * Audio DC level restoration to fix some monitors that'd be silent or have other weird audio volume issues. * FDS channel redone to be hopefully more accurate. * DPCM fixed to allow retr...
by kevtris
Tue Apr 25, 2017 8:57 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

looks like I fixed the "wigglin' pixels" PAL problem too. This was caused by capturing the data at the wrong place. Jason sent me 5 sets of PAL chips, 3 sets of laser H rev chips, and a weird ebay sourced counterfeit CPU for testing. 4/5 sets of PAL chips had the wiggling pixel issue (As people have...
by kevtris
Tue Apr 25, 2017 6:47 pm
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

IMG_20170425_170442.jpg Is this the result of the mentioned palette screwiness? That is on a NTSC Rev. G PPU with a Famicom Adapter. yes, that is it. This should be fixed now. for good, I hope. I haven't tried it on a twin famicom, but I do have one here. not sure if I will have time to open it up ...
by kevtris
Tue Apr 25, 2017 12:50 am
Forum: NES Hardware and Flash Equipment
Topic: Hi-Def NES HDMI Adapter for the NES
Replies: 623
Views: 212991

Re: Hi-Def NES HDMI Adapter for the NES

Sorry I been scarce awhile. I was working 12 hours a day getting that nt mini out the door last year and the start of this year. Those that don't know, this is a multiplatform FPGA videogame system I designed. It nominally plays NES but can play all my other cores too (well mostly). Anyways, I have ...