Yellow Cart ?

[mantadoc]

What am i doing wrong here ?

 

The eprom is M27C801

Loaded with 1 meg games , no error in burning

Dip to 1M

 

My first real Yellow try , don´t want to destroy something

[+Ksarul]

You have to use the 27C800--a 42-pin, 1Mx8 chip. You can't use the 801s, as they have a completely wrong pin-out. . .You can also use the 27C400 (512Kx8) or the other 16-bit chips in this family down to 128Kx8. Note, these chips work as 8-bit or as 16-bit chips. We use them in the 8-bit mode.

Edited February 28, 2016 by Ksarul

[+Ksarul]

The equivalent chips from the Maxim 29F series work as well (the appropriate 2MB chip from that family is the 1615).

[mantadoc]

Ooh that explain why it won't work thanks

[mantadoc]

Do they have the same connections ?

Same memory capacity ?

[+Ksarul]

It is really simple with the Yellow boards--if the EPROM has less than 40 pins, it will NOT work. The 512K chips that work are the 27C400 and the 27C4100. Both are 40-pin chips. Willem-based programmers won't be able to program these without a 16-bit chip adapter. . .it was the main reason I initially only sold these boars as a complete cartridge, as I had the necessary hardware to program them already.