#8668 - Azura - Thu Jul 17, 2003 5:40 pm
I want to have a go at building my own flash cart.
(am pretty confident with electronics & pcb design)
Would it be possible to use the 49lf020 Flash device ?
How many games were made that would will fit on a 27c256 ?
Has anyone got any links to some easy to follow diy carts ?
I have a gb pocket, gb colour & gb advance, so dont care what one to work with for my 1st homebuilt cart.
#8678 - tepples - Thu Jul 17, 2003 9:04 pm
Commercial GBA games are 4 MBytes or larger, usually 8 MBytes. Homebrew games can be as small as 32 KBytes.
To learn how to build a homemade GBA cart, read Reiner's page.
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#8727 - Cyberman - Fri Jul 18, 2003 5:39 pm
ampz has a nice little schematic for an 8mbit flash cartridge
a few people have speculated about making a Rom Emulator using SDRAM or DRAM (which is not a BAD idea it's just not close to EASY ;) ). Static Ram would work as well but you need a fair amount of it (IE 64mb or at least 32mb). PSRAM is possible Again you need at least 32mb (which is obtainable).
256Kbit is TOO small for most things. This is 64KB of memory, I could fit probably a fair amount of stuff in that in C or C++ myself but .. if you want to develope using a library etc. It's not enough :)
I believe to do what you would like to you need
1 EEPROM based CPLD <this handles addressing and Static RAM and should be EEPROM based because these are 'instant' on programable logic devices>
2 4mbit SRAM for keeping game save state information for several different games (handy to have this ability for 16 32KB games even if you are developing).
3: 128mbit or 256mbit flash memory.
Reminds me I should finish my own flash 256Mbit cartridge, I just need to complete the guts of the CPLD :)
I am looking at the idea of using a SDRAM and some cute caching to make an emulated ROM possible as well. This requires a SRAM based FPGA instead and so it's a much more complicated device to deal with.
Cyb
#14072 - goku_ssj3 - Mon Dec 29, 2003 12:33 am
hi
i am the ultimate newbie u can get here
im not qualified
but i want to be
i want to make my own flash card aswell
i kno ppl hav sed this before
but where do i begin?
if anyone has a site or info (i got tht reiner bookmarked - makes no sense to me at all)
plzz help
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#14077 - tepples - Mon Dec 29, 2003 2:34 am
If you are in fact an "ultimate newbie" then it may just be cheaper to go to mwelectronics.com (or another flash cart retailer listed in the Retailer Feedback section) and drop $100 or so on an EZ-Flash cart.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.
#14099 - goku_ssj3 - Mon Dec 29, 2003 8:56 pm
but want to learn how to build my own
i may be 16
but playing on my gbasp and ps2 arent the only things i do on them
i found a way on how to surf the internet on my ps2
but that was piss easy
and i learnt nothing out of that
and i modded my ps2 myself, even though it is a fliptop method
so now i want to make my own flash cart, and has any one seen that picture of gbasp connected to a cd drive? i want to make that aswell
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#15746 - x86asm - Wed Jan 28, 2004 10:11 pm
| goku_ssj3 wrote: |
but want to learn how to build my own
i may be 16
but playing on my gbasp and ps2 arent the only things i do on them
i found a way on how to surf the internet on my ps2
but that was piss easy
and i learnt nothing out of that
and i modded my ps2 myself, even though it is a fliptop method
so now i want to make my own flash cart, and has any one seen that picture of gbasp connected to a cd drive? i want to make that aswell |
I'm 17, pick up electronics, its a lot of fun, when I was like 12, my dad bought me a book on microprocessors and I never stopped reading about digital electronics since.
How are you going to solder those SMD CPLD's onto the board, I wanna see how you do that if you go through with it, drop me an email. I'm also thinking of making a 128KB flash card for my original GB, I won't need a CPLD as the MBC5 is already included (The legend of the river king is not worth my game playing time anyway :D )
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#15748 - Dan_attacker - Wed Jan 28, 2004 10:45 pm
Is it possible to make a cart with ram in it, like maybe a sodimm or something? It's just there's like no ram in a GBA. (256k bleh)
#15753 - Cyberman - Thu Jan 29, 2004 4:34 am
| Dan_attacker wrote: |
| Is it possible to make a cart with ram in it, like maybe a sodimm or something? It's just there's like no ram in a GBA. (256k bleh) |
Err.. what good would the RAM do without a boot ROM program? All things are possible just not all are practical. When all else fails be specific :)
What do you want to do? :)
Cyb
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