John Bennett
Senior Member
[ukvac] Tech: Nemesis RAM
I've just picked up an untested Nemesis PCB which doesn't work :-(
When I connect it up I get a test screen showing error "CHARA RAM
BAD" (all other checks are good) and "37FA" appears at the bottom
right of the screen.
Everything looks complete and free from damage. The bottom board has
two ICs wired together (F23 and E17). Removing the wiring corrupts
the test screen making it impossible to read anything.
I've swapped the bottom board with a working Salamander one and I get
a similiar corrupt test screen.
I'm going to try piggy backing some of the 8128s on the top board but
does anyone know which are the character RAMs?
James
DATA Imported from archives: originally posted by jamesortonuk (james_orton@hotmail.com)
I've just picked up an untested Nemesis PCB which doesn't work :-(
When I connect it up I get a test screen showing error "CHARA RAM
BAD" (all other checks are good) and "37FA" appears at the bottom
right of the screen.
Everything looks complete and free from damage. The bottom board has
two ICs wired together (F23 and E17). Removing the wiring corrupts
the test screen making it impossible to read anything.
I've swapped the bottom board with a working Salamander one and I get
a similiar corrupt test screen.
I'm going to try piggy backing some of the 8128s on the top board but
does anyone know which are the character RAMs?
James
DATA Imported from archives: originally posted by jamesortonuk (james_orton@hotmail.com)