Hello guys! Here is another newbie question...
I have made some carts using different size for PRG and CHR eproms. 128kbit and 256kbit. The PRG eprom is 32Kb (256 Kbit) and nothing strange about that.
But a friend of mine told me that if I have a CHR file that is smaller than the actual eprom, I have to "double it up". I've done this in a HEXeditor, and then I've put the CHR-file on eprom.
When trying the eproms in my test cart, I sometimes get a grey screen when turning the power on and off. The program works all the time though. So I was thinking that I was doing something wrong "doubleing" the CHR file up... Is it just to copy all data, go up to the start of the file, paste it in?
Anyway, the cart works fine everytime I have the power turned off for at least 10 seconds and then turning it on. But Turning it on/off fast makes this problem occur... Hmm...
I have made some carts using different size for PRG and CHR eproms. 128kbit and 256kbit. The PRG eprom is 32Kb (256 Kbit) and nothing strange about that.
But a friend of mine told me that if I have a CHR file that is smaller than the actual eprom, I have to "double it up". I've done this in a HEXeditor, and then I've put the CHR-file on eprom.
When trying the eproms in my test cart, I sometimes get a grey screen when turning the power on and off. The program works all the time though. So I was thinking that I was doing something wrong "doubleing" the CHR file up... Is it just to copy all data, go up to the start of the file, paste it in?
Anyway, the cart works fine everytime I have the power turned off for at least 10 seconds and then turning it on. But Turning it on/off fast makes this problem occur... Hmm...