eeprom programmer

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 10:35 am

so i was on the egay looking at eeprom programmers and came across the following

http://cgi.ebay.com/TOP2007-Programmer- ... 7C294%3A50

would this suffice for making BIOS chips for the naomi? what blank chips do i need and does anyone have a good source? also will it program an eeprom for other pcb boards like to make a 4 player simpsons board into a 2 player provided i burn the correct roms? any help would be fagtastic :smt039

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 10:44 am

Bullshit, if you are looking for a good programmer. Anything over 500$ will do.

For naomi bioses, you need to aim at 27C160 which are 42pins if I'm not wrong. A cheapo programmer is the top 2048 but again it is pure bullshit.

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 1:34 pm

I use the Leaper48, middle of the road, but ideal for 90's PCBs.

Not good for old proms etc, but if your doing 16bit eproms it is fine and fast!!

Stay clear from parallel/serial unless you like waiting.

I can burn a Naomi eprom in about 20seconds, on older burners it can take like 2-5minutes.

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 3:55 pm

do you guys see one on ebay that you reccomend?

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 7:26 pm

Stay away from Willem and TOP series programmers... along with anything Chinese.

Also watch out for programmers with only 40 pin sockets. They won't do the larger EPROMs that are 42 or 44 pin.

I have the RomMax from eetools.com. It'll do up to 16meg EPROMs, EEPROMs, Flash ROMs, OTP ROMs, PAL/GAL/PEEL, and many old school PROMs. Very VERY versatile.

I have an old Data I/O series 22 for the old school stuff that the big programmer won't do.

BTW: EEPROM does NOT equal EPROM. EEPROMs are electrically erasible and typically use 5v only. EPROMs require from 12 to 25 volts (sometimes higher for ancient ones) to program and require UV light to erase.

RJ

OldFoo · Post by **OldFoo** » Thu Dec 04, 2008 10:04 pm

I got a cheap one (gq-3x) from http://www.mcumall.com - no problems.

Native USB and windows software. I've used to to program neo-geo & naomi bioses, also older eproms and modern SMD flash roms.

OldFoo · Post by **OldFoo** » Sun Dec 07, 2008 12:16 am

I also have one from mcumall(along with adapters to make it be able to use more chip types) and it works a treat. No problems whatsoever making naomi bios with it(but you will need an adapter to fit the 42 pin chips-at least you do on my model)..I think I paid a total of like $25-$30 for everything including shipping, and also got a uv eraser from them for like $20 maybe.

Nothing top of line or anything, but it does work and the price is definitely right. And again, I've had no problems with it.

OldFoo · Post by **OldFoo** » Sun Dec 07, 2008 12:46 am

The programmers from MCUMall work great. I would suggest that you get USB versions only because other types (serial/parallel) are problematic and not worth any 'savings' in getting it cheaper.

OldFoo · Post by **OldFoo** » Thu Dec 11, 2008 12:55 pm

invzim wrote:I got a cheap one (gq-3x) from http://www.mcumall.com - no problems.

Native USB and windows software. I've used to to program neo-geo & naomi bioses, also older eproms and modern SMD flash roms.

I quite like the look of this one. Presume you have this too to do the 42-pin stuff...

http://www.mcumall.com/comersus/store/c ... oduct=4289

Why do the Willams get such a bad rep?

I'm wanting to do a bit of EPROM programming, but can't really justify paying ?300 or more for something that will get about a dozen uses. If I find myself doing a load, then I may upgrade, but this Willam looks like a good starter for 10.

OldFoo · Post by **OldFoo** » Thu Dec 11, 2008 4:36 pm

Got this one, http://www.mcumall.com/comersus/store/c ... oduct=4290 - but I believe the only difference is the 42pin ZIF socket.