ROM-Lover
New Challenger
- Joined
- Mar 11, 2008
- Posts
- 53
Hi,
my loved KoF 2001 for MVS isn´t working anymore, just the crosshatch appears.
I´ve tried to clean it or set it to another slot with the same result.
So it must be the P1 faulty, i think.
I´ve own a willem eprom programmer and i´ve burned unibioses with it till now.
A look in the forum told me that i´ve to use a 27c800 eprom to replace it.
First problem getting the file.
I´ve set my willem to 27c800 settings with 12,5VCC and 5,5VDD.
Desoldered the P1 and put it into the willem, read it and save the file. It has a size of 1MB.
Then i´ve written it to an empty eprom but it won´t work. Maybe the faulty chip gives no good data.
After that i´ve checked an old download from a neo geo emulator.
There´re all games packed in *.rar with all data named like chips.
Size was the same as the file i read from the original chip.
Another try to burn. Failure.
Ereasing eprom´s.
Now it it´s on the chip but it don´t want to work, too.
Are the files right or have i read them wrong or it takes special settings to burn Neo Geo files?
The second problem
I used the willem just for 27c1024 for bioses till now. These works fine. Only one time a chip won´t written.
But after some eareasings and no better results i think it was a faulty one.
With the 27c800 i´ve got often problems to write.
The willem is a PCB45. Somebody use this and can tell me settings for these chips?
Thank´s
my loved KoF 2001 for MVS isn´t working anymore, just the crosshatch appears.
I´ve tried to clean it or set it to another slot with the same result.
So it must be the P1 faulty, i think.
I´ve own a willem eprom programmer and i´ve burned unibioses with it till now.
A look in the forum told me that i´ve to use a 27c800 eprom to replace it.
First problem getting the file.
I´ve set my willem to 27c800 settings with 12,5VCC and 5,5VDD.
Desoldered the P1 and put it into the willem, read it and save the file. It has a size of 1MB.
Then i´ve written it to an empty eprom but it won´t work. Maybe the faulty chip gives no good data.
After that i´ve checked an old download from a neo geo emulator.
There´re all games packed in *.rar with all data named like chips.
Size was the same as the file i read from the original chip.
Another try to burn. Failure.
Ereasing eprom´s.
Now it it´s on the chip but it don´t want to work, too.
Are the files right or have i read them wrong or it takes special settings to burn Neo Geo files?
The second problem
I used the willem just for 27c1024 for bioses till now. These works fine. Only one time a chip won´t written.
But after some eareasings and no better results i think it was a faulty one.
With the 27c800 i´ve got often problems to write.
The willem is a PCB45. Somebody use this and can tell me settings for these chips?
Thank´s
