I'm finding it difficult to find slower chips for a decent price and so was wondering if 90ns is too fast?
Also, are the TSOP 40 to DIP36 adapters on buyicnow compatible with SNES reproductions?
Finally, what TSOP adapter should I get? I have a similar one to this: http://www.bakersfieldads.net/East-Bake ... 27C512.jpg so it's pretty basic.
Thanks.
Is 90ns TSOP40 too fast for SNES Reproduction?
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- For making cartridges of your Super NES games, see Reproduction.
any speed of 29f032 will be sufficient. if the chip is capable of going faster, it will just be an "unused" capability.
Otherwise, the BuyICNow Type 3 is the most "correct" adapter, as it does not invert address lines like the Type 2 does, and the Type 1 requires additional jumpers on the end to be set.
Otherwise, the BuyICNow Type 3 is the most "correct" adapter, as it does not invert address lines like the Type 2 does, and the Type 1 requires additional jumpers on the end to be set.
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Will using a Japanese ToP as a donor work since it'll already be configured correctly to run off two roms?
http://www.snescentral.com/pcbboards.ph ... VC-LJ3M-01 - Snescentral page that details the board pretty well although I don't understand any of it :p.
http://www.snescentral.com/pcbboards.ph ... VC-LJ3M-01 - Snescentral page that details the board pretty well although I don't understand any of it :p.
Yes if you replace the two ROM chips with the correct rom data. But I'm not certain how you should split it up.
On that PCB it seems each ROM socket can contain a 32 megabit ROM. So you'll have to figure out, do you split the ToP ROM first 32M and last 16M (duplicate the last half to 32M size) and put the first part of rom in socket U0 and the second in U1. Or maybe you need to do something different. I don't know and cannot tell from the documentation. But I'd try putting the first 32M (4 megabytes) of the ToP ROM (cut out any 512 byte header if there is one) and put that in the U0 socket. Take the last 16M (2 megabytes) of ROM and duplicate it, you can just do copy /b last16m.bin + last16m.bin U1.BIN or use a hex editor. Then put that one in the U1 socket.
That might work. Or it might not. I don't know for sure.
On that PCB it seems each ROM socket can contain a 32 megabit ROM. So you'll have to figure out, do you split the ToP ROM first 32M and last 16M (duplicate the last half to 32M size) and put the first part of rom in socket U0 and the second in U1. Or maybe you need to do something different. I don't know and cannot tell from the documentation. But I'd try putting the first 32M (4 megabytes) of the ToP ROM (cut out any 512 byte header if there is one) and put that in the U0 socket. Take the last 16M (2 megabytes) of ROM and duplicate it, you can just do copy /b last16m.bin + last16m.bin U1.BIN or use a hex editor. Then put that one in the U1 socket.
That might work. Or it might not. I don't know for sure.
It depends on the board. If a game has only 1 ROM socket and a 36 pin DIP socket, it should probably support a 32 megabit / 4 megabyte game just fine.
When boards have multiple ROM sockets there is decoding going on and if you replace them with ROMs bigger than what were originally used, it won't work unless you aren't using the bigger chip's full capacity.
When boards have multiple ROM sockets there is decoding going on and if you replace them with ROMs bigger than what were originally used, it won't work unless you aren't using the bigger chip's full capacity.