Hi all,
I'm trying to switch Parados Dual Os.
When i try to write dual os image on eprom i'm getting the error belowe.
İs any one know abot this error, and what can i do?
I'm trying to use file on the link.
File:DualOS.ROM - CPCWiki (https://www.cpcwiki.eu/index.php/File:DualOS.ROM)
"Programming FLASH ...
ERROR! Address:0x000004 Buffer Data:0x72 Verify:0x70
Programming ...Failed"
Bad chip?
To fast write?
Bad connect?
Bad programmer?
chip is 256k, 16k bios can write without any errors.
only 32k dual parados bios cant write.
Quote from: unay on 10:24, 26 March 25chip is 256k, 16k bios can write without any errors.
only 32k dual parados bios cant write.
The file has 0x72 at address 0x00004. So if your programmer writes a 72 but then reads a 70 then it's a problem with the Eprom or your programmer but it can't be a problem of the file.
What chip is it exactly? (exact model number)
Was the Eprom properly erased between programming attempts? Can you program other 32K files properly?
I also assume it's inserted directly into the programmer without any adapter?
The chip number is M27C256B.
I was trying some various ways, eventually it works.
Dont ask me how :D
Thanks.
Quote from: unay on 12:36, 26 March 25The chip number is M27C256B.
I was trying some various ways, eventually it works.
Dont ask me how :D
Thanks.
Probably just a bad connection between the EPROM Pins and the programmer. Happens often with older EPROMs.
Bryce.