http://www.youtube.com/watch?v=a_OEUKEE ... ata_playerYou don't need to go to great lengths to get 32mbit on a Snes cart AND fit inside the cart......
From what I've heard the 29F032 flash chips are actually pretty abundant as they were produced pretty well. But that's a fair point that they are difficult to solder compared to DIP.
I find TSOP a lot easier to solder and desolder than DIP. I takes less than a minute to put a TSOP onto a board or remove it for me. Without any special tools.
Those that can solder a tsop are not novice people. And if you have a good source for the 29F032, then please let me know cause I can't find any.
These are boards I made for my personal use (along with other pcbs for other projects) and thought I would offer them up to anyone interested.
These are not for profit but if I can recover some of my costs to make these, then that would be nice. If no one wants them, no big deal either way.
While I still find TSOP easier and cheaper than using 4 EPROM per game, I find your design very clever and interesting! Must have been hard to line up everything perfectly like that.
I wish I was that good!
Got it all lined up on the first try. Thanks
Hey,
I agree with above a TSOP is alot less work to solder to a board, and there are millions of them out there.
For me it takes about less then 3 minutes to fully solder a TSOP to a board with pin headers.
Its not that hard i think its just how you tackle it, drown it in flux use a correct tip and have a good wick handy for mistakes.
And i have always found a x10 glass with light in it is perfect for small jobs, use the drag method aswell
I believe the only issue with the TSOP is the programming of them,
However your design is nice but how much does it cost to make a game like that but?
Markfrizb wrote:
Those that can solder a tsop are not novice people. And if you have a good source for the 29F032, then please let me know cause I can't find any.
BuyICNow.com has lots of 29F032s available. They even have them premounted on their adapters for SNES, and offer programming services as well.
http://www.buyicnow.com/search.php?sear ... 02503&zl=0
That is nice. They were out of stock for a long time.... I thought that was over since spansion stopped making their flash part.
Good to know
I was able to buy 100 from my guy not too long ago. He said he had in 700 and already sold 300 to other peeps.
Hey, I bumped this topic in response to the other post. I meant to copy and paste this an insert it in the other topic about stacking roms...
I'm on board with the "TSOPs aren't that bad" crowd. Really, all it takes is practice. I started out barely able to solder wire-to-board for audio projects and just decided one day that I wanted to try surface mount, so I bought some parts and started practicing. Sure, I wrecked a few chips early on, but that was my fault for STARTING with 0.5mm pitch TSOPs. Get some 1.27mm SOICs or something. You can get 7400-series chips for next to nothing. Solder them down, then pull them off, then do it again. Then move on to something smaller. All it takes is practice. Of course, a good iron/tip never hurts, but I did just fine with the piece of crap I used to own, it just made me appreciate my nice one when I got it. Also, get good 60/40 (or my favorite, 62/36/2) solder, forget the lead-free junk.
Another thing, for games less than 32Mbit, Micron still produces 5V Flash ROMs in 8Mbit and 16Mbit sizes. M29F160's sell for ~$3. Most distributors will list them as out of stock, but really they're just a "non-stocked" item, meaning they have to order them from Micron, and don't keep stock on hand. Avnet has them in stock though. That's what I used for my Zelda: Parallel Worlds cart.
Man, that is GOOD TO KNOW. Thanks!
I have breakout boards available for the M29F160/M29F080. Here's my Zelda: Parallel Worlds cart with one (along with my F-RAM adapter for non-volatile saves). I've since updated the breakout board to cut off some of the unnecessary space on the right hand side so it doesn't overhang the edge of the main board anymore.
So that flash rom is not a .05 pitch?
Since the original posting of this thread, I have gotten much better at mounting the Tsop roms.
It's amazing how helpful some thin strip tape is.
Those Frams... Is that a 5v device?
qwertymodo wrote:
I have breakout boards available for the M29F160/M29F080. Here's my Zelda: Parallel Worlds cart with one (along with my F-RAM adapter for non-volatile saves). I've since updated the breakout board to cut off some of the unnecessary space on the right hand side so it doesn't overhang the edge of the main board anymore.
surprising qwertymodo
these data will be alright ...?
M29F160 (16 Mbit (2Mb x8 or 1Mb x16, Boot Block)) (TSOP 48)
you use for the ROM?
M29F080A (8Mbit (1M x 8))
SRAM you use it for?
What's means F-RAM?
Somehow changing some mad-1 to 741398/138 or something like that
FRAM or FeRAM ==
ferroelectric random access memory. It's good for replacing battery-backed SRAM in games that use SRAM only as save memory (especially on Super NES), but early FRAM parts didn't work so well in games that use SRAM for both working memory and save memory (especially on NES) because the write endurance may theoretically cause a problem. Newer FRAM is rated in the
quadrillions (10^15) of writes, which is enough to last centuries at 3.6 MHz.
Another thing to mention is that (at least for the Ramtron chip I used), the FRAM has data latches, so you have to
decode the /CS signal in order to toggle it for every access
excellent
thanks for the info, tepples and qwertymodo
qwertymodo wrote:
Another thing to mention is that (at least for the Ramtron chip I used), the FRAM has data latches, so you have to
decode the /CS signal in order to toggle it for every access
damn MAD-1 (do it all) handle more than 32 Mbits of ROM, more than 2 maskrom address, manage sram, set switch for battery, when connected to not take the battery cartridge and someone says it is not a special chip, then, who could replace? 8 output decoder
demons, never hate a chip...
regards