friedskater wrote:An update - I swapped out the switching regulator for a linear one. No discernable difference.
I took out the 74LS373 latch and swapped it for a 74HC373 and I think there is a very slight improvement. The player sprite is almost correct in Castlevania III (it was really corrupt before) and I get less glitching on the ED menu, especially on the bottom bar on the menu - there is no glitching there at all.
Unfortunately I don't have a way to capture 240p at the moment, so here's another crappy video of a TV screen
https://imgur.com/a/jMIWNiu
Good to hear the 74HC versions of U2 and U3 improved the Everdrive glitches. I will recommend these be used instead of the 74LS chips in my upcoming Youtube video and official documentation.
After thorough testing of the v1.2 NESessity it is now available for sale on
https://www.tindie.com/products/low_bud ... s-console/
I am also working on fully assembled NESessity circuit boards (minus CPU & PPU.)
I have received many helpful suggestions from customers, some of which I was able to incorporate into v1.2
I made it a little easier to install the IGR board by adding solder pads for reset in/out and pads for all the controller pins.
I am not able to incorporate a Nintendo style A/V multi-out connector in the current design due to available room; However, I am now including a connection PCB for the s-video and 8p mini-DIN connectors included with the NESRGB. This PCB allows JST connectors to be used for the NESRGB to video out connection, which makes the install a bit neater.
I also added an "insert coin" button, but it doesn't quite work as intended, let me explain:
I was able to load some of the Nintendo Vs. arcade game roms (in .nes format) using the Everdrive, but I could not insert a coin in order to play them. So I found this helpful guide
https://www.raphnet.net/electronique/ne ... ction_id=8 and decided to give it a try for v1.2.
So this was designed to have solder pads for a momentary pushbutton switch that would activate the coin input. My first test of the NESessity v1.2 I didn't install this switch. I loaded Vs. Super Mario Bros and I found that somehow the microphone input activates this. Yeah, tapping on or yelling at the NES will "insert a coin" and allow you to play Vs. Super Mario Bros. Weird. The color palette is wrong, because Nintendo used a primitive form of anti bootleg protection by using different pallete RGB PPUs in their arcade games.
Next I tried Duck Hunt. This game has the correct palette with a NES PPU. This game has audio glitches and I have yet to try the light gun, but it loads ok.
I also tried Vs. Castlevania, but could not get this game to boot. I am trying to locate more Vs. roms in .nes format to test out.
Anyway, there are still many limitations to playing the Nintendo Vs. arcade games, so I'm not advertising this as a feature. It does not interfere with NES / Famicom games whatsoever because they don't read D5 of the data bus when the player 1 inputs are being read. I also don't have the Vs. arcade game DIP switches, that may be causing some incompatibility.