Subject: [stella] Hardware Problems|
From: "Chris Larkin" <clarkin@xxxxxxxxxxxxx>
Date: Wed, 4 Dec 2002 17:06:14 -0800
As the work on my flash cart continues on I'm still hitting some major bumps... During a routine test this morning, I programed the cart with Pitfall, and placed it in the VCS... when I fired it up.... nothing.... So I checked over everything, every little last detail, still nothing....
So I manually manipulated the Address Lines and read the data out of the EEPROM with a multimeter on the cartridge connector pins, and it coinsided perfectly with the data in the ROM image... I even checked the FFD start address, and it is correct in the EEPROM...
This was working fine before, and as usual now it is Caput... so I seek the help of you all... I removed everything from the breadboard except the EEPROM and the hex inverter... the only thing I think this can be is the length of wire coming from the PCB to the EEPROM, it's about 6 inches a wire... do and of you think this could be the problem???
Or the EEPROM is corrupt some how, I cannot check all 4096 addresses by hand, so I checked about 35 different area's of the ROM, and they all came out correct.