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Posted: Tue Jan 02, 2007 2:02 pm
by leonk
why don't you buy the bit to open the carts up? They're less than 3$ on eBay. Like this you won't be killing the covers every time.
Posted: Tue Jan 02, 2007 3:56 pm
by hayabusafmw
I bought it today but i didn't want to ''wait to unsolder ect''
I always try to do the more i can in 1 shot
What is the chips needed for the MMC1 ?
So maybe futurelec can ship it in the same order since it's not shipped out yet.
PS: i just check my order with FUTURLEC
My eprom order was Wrong
I got 32 pin ones......
wich was 4.50$
the 28 pin one are 6.50$
the ones needed at atmel (flash 256k 28 pin dip)
+ i email them saying if it isn't too late i will take 512k aswell.
On the website it didn't mention that my order was shipped yet (thank god)
Posted: Tue Jan 02, 2007 6:09 pm
by hayabusafmw
this is what i ordered i think .......
http://www.futurlec.com/cgi-bin/search/ ... o=AT29C256
I posted it the day i bought them i think...
I am 90% sure it's not the right chip....
+ just looked they are not in stock so.... Great my order must of not been shipped^^
so what i need for the MMC1 is
1 AT29C512 512k 120ns CMOS Flash Memory
& 1 AT29C256 256k 120ns CMOS Flash Memory
& the the Excitebike i will need 2x AT29C256 256k 120ns CMOS Flash Memory
Is it right??
but the AT29C256 256k 120ns CMOS Flash Memory are not in stock.... grr...
Posted: Tue Jan 02, 2007 10:22 pm
by Memblers
Weird.. it says it's 32-pin DIP on there. I can't even find that page you linked to, just this (the correct, apparently out of stock one -
http://www.futurlec.com/Memory/AT29C256pr.shtml
I looked on
http://findchips.com/ and there are a couple obscure suppliers that seem to have them. Never ordered from them before, but something you could try if you want. BTW, you want the one ending in PC (DIP), not JC (PLCC).
so what i need for the MMC1 is
1 AT29C512 512k 120ns CMOS Flash Memory
& 1 AT29C256 256k 120ns CMOS Flash Memory
No, those are kilobits. 512kbits = 64kbytes. You want 512kbytes, the 29F040 (or 29C040, same thing). If you order from them BTW, you might want to get the Atmel type. Someone here on the forum ordered the '020 AMD type and got sent some "PMC" brand chips that the Willem programmer won't support.. he sent me a couple and I couldn't get them to burn either. I guess because AMD doesn't make '020 FlashROMs, heh.
I could sell you a couple brand new AM29F040B-120PC chips if you want, for $6 each + shipping. A 512kB chip can replace a 256kB and 128kB chip too, BTW. Just wire the unused pin(s) to GND or VCC if needed.
but the AT29C256 256k 120ns CMOS Flash Memory are not in stock.... grr...
Yeah, that sucks. It's apparantly a very hard to find chip. Kinda surprising, considering how nice it is for replacing a 32kB EPROM. EPROM is definitely going out of style.
Posted: Tue Jan 02, 2007 10:41 pm
by hayabusafmw
thanks i pmed you
But maybe eprom like those (28 pins ) are going to desapear?
maybe the demand isn't there anymore thats why only 2 site have them....
thats sucks that they are that hard to find since it's needed for nes carts:S
Posted: Wed Jan 03, 2007 12:23 pm
by hayabusafmw
found some supplier
that sales AT29C256 & AT29C512
but minimum order 50$
free shipping + free sockets.
I will give it a try
they said they have VERY many in stock
& i also saw some other site saying they had like 160 000 atmel in stock...thats like crazy .
Posted: Wed Jan 03, 2007 3:32 pm
by hayabusafmw
today i found an old Game board i had laying here
It had several maybe 8 to 12 28 pins Eproms.... it fits in the nes pcb
I just wanna check if they can be UV erasable if so i will buy a darng uv eraser so i won't have any more trouble finding chips
it's written on the eprom
S 27c256 -20 fa
& some other i took from the same board is written underneath it
JL2764hs/048002 singapore 17
Let me know ^^
Posted: Wed Jan 03, 2007 8:56 pm
by Lloyd Gordon
If you want UV erasable EPROM's I might be able to send you some.
Posted: Wed Jan 03, 2007 9:03 pm
by Lord Nightmare
hayabusafmw wrote:today i found an old Game board i had laying here
It had several maybe 8 to 12 28 pins Eproms.... it fits in the nes pcb
what game board? is it dumped? what was it?
be sure you back up whatever it was if it was anything valuable.
Lord Nightmare
Posted: Wed Jan 03, 2007 10:35 pm
by hayabusafmw
I bought the UV erasable chip today from a contact near where i live
^_^
he has all UV eprom for cheap
About the PCB
Nah i didn't dump it didn't need i don't care about it it was a dead board but the eproms are still good im pretty sure.
I just dunno if they would be Compatible
ill know once i get my eprom eraser..
Now i need to learn how to split the game files manually
Posted: Sun Jan 07, 2007 5:33 pm
by hayabusafmw
Im still trying to Figure out how to Rip the games properly using Cajo nes.....
I didn't do fine with ''megaman 2 , megaman 1 ,''
all i was able to do is with ninja gaiden ,
I don'T know what i am doing wrong
even contra doesn't work ..
(i will receive my chips + burner this week i beleive so i need to get those file s ready & learn)
Posted: Tue Jan 09, 2007 7:54 am
by tokumaru
The other day I was in a rush, so I didn't have the time to get any tools or set them up, so I got the PRG from an UNROM (would work for any games using CHR-RAM, as is the case with the ones you mentioned) using DOS "EDIT".
It works, and for games that only have PRG ROM it's really easy. Just go to the command prompt and type "EDIT /80" to enter edit in binary mode. Open your ROM and make sure the cursor is over the first character of the first row (will only work if the beginning of the first row says "NES"). Now, hit "Delete" on your keyboard 16 times, to get rid of the iNES header.
What remains should be the PRG data. Save it now woth another name, such as "prg.bin", and check if the new file has the correct size. A 128KB game should have 131072 bytes, a 256KB game should have 262144 bytes - EXACTLY!