- Joined
- Jan 18, 2001
- Posts
- 4,229
How long were these in development?
I started beginning of March when the NeoCD debug thread began.
How long were these in development?
Also how many boards did you order for each type? All my MVS boards have a socketed BIOS, but I might end up getting a smaller one later on.
:golf clap:
great job ntm!
Which kind of makes me wonder if there could be a 4Mbit MVS bios with more features ... stuff like saving dip settings, high scores, default cheats, etc. to memory card like the new CD one does (well, not high scores yet, but you get what I'm saying).Technically the CD one would work on the 1b and 1c board if you used the larger 27c400 chip.
I am out of town till Tuesday, but if you think the one I sent you is damaged I'll send you another one when I get back. Like you mentioned before, the board I sent you is one I used in a lot of tests, so it was removed over and over and over again, but it still had pleanty of force behind it.
edit: Murray's and xiao_haozi's systems should be arriving either today or tomorrow. I'm interested in hearing if the NBMs stayed put through USPS. I'd think that's a good test of stability.
Forcing it all the way in made it pretty secure and now it works perfectly well. Just swapped a bunch of chips and they read fine. I'm stuck on something else now, will post later in debug thread if it turns out to be a real issue.
Haha yeah, that makes much more sense. I was wondering why those two would be soldered to ground.CE and OE need to be connected to pin 10 and 12 of the old bios, not to the ground points you soldered them to. NTM used those thru-holes only to route the wires to the other side of the board, he didn't solder to them. In your case the bios isn't there anymore so you can keep the wires on the top side and solder them straight to pads 10 and 12.
http://2dlives.com/nbm/install.pdf
I whipped up a quick install guide. I'll show actual examples on the order page, but I wanted this to be the real how to. People can route the wires however they like, I just dont want to add too much confusion. This details how to disable the existing bios as well. Of course if the bios isnt there, you just solder to the pads.
I didnt include the vias (holes) mainly because I am starting to see some boards with those vias soldered in. So to stop any confusion I'll just show the one install way.
Comments?
I don't know man. If someone's noob enough not to understand the combination of the printing on th NBM and the install doc, they need to put down their soldering iron and take a step back. It was crystal clear to me.Looks good but needs to be more clear for snapping it on and which direction it needs to face for each application. I understand it perfectly, but there are a lot of noobs that dont have common sense as to reading the direction on the NBM. Other than that it is great.