________
| RF | _____
| | | |
| M | |_____|
| O ||| | |
| D ||| | |
| U ||| | |
| L | ___
| A | ___
| T | ___
| O | __* LUM1
| R | __* SYNC
| | __* LUM3 ______
| | __* LUM2 _
|________| /\ / \
| \/ \_/
|- | | | ____ ___
|- | | | __* e aud ___
|- | * | __* aud __* 26CR
|- LUM0 ___ ___
____ ___
____ ___
___
___ ________
___78CR*__ || 74LS32 |
/\___ ___ ||________|
\/___ |
There are nine A/V connections you need to make, plus power and ground which I'm not including.
LUM 0 is located just below the RF modulator in a bank of three vertical components.
It is the middle one. Pull the signal from the bottom of the resistor.
LUM 1 is located to the right of the RF modulator in a bank of seven horizontal components.
It is the fourth from the top. Pull the signal from the right side of the resistor.
LUM 2 is located to the right of the RF modulator in a bank of seven horizontal components.
It is the seventh from the top. Pull the signal from the right side of the resistor.
LUM 3 is located to the right of the RF modulator in a bank of seven horizontal components.
It is the sixth from the top. Pull the signal from the right side of the resistor.
The SYNC signal is located to the right of the RF modulator in a bank of seven horizontal components.
It is the fifth from the top. Pull the signal from the right side of the resistor.
The 7800 Chroma signal is located to the left of the 74LS32 in a bank of two horizontal components.
It is the top component. Pull the signal from the left side of the resistor.
The 2600 Chroma signal is located above the 74LS32 in a bank of seven horizontal components.
It is the third from the top. Pull the signal from the right side of the resistor.
The external audio signal is located between the RF modulator and the 74LS32 in a bank of six horizontal components.
It is the second from the top. Pull the signal from the right side of the resistor.
The audio signal is located between the RF modulator and the 74LS32 in a bank of six horizontal components.
It is the third from the top. Pull the signal from the right side of the resistor.
http://www.geocities.com/atari7800mod/7800_vidmod_construction.html
http://home.earthlink.net/~resqsoft/7800_mod.htm
©2001 by Mitchell Orman