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HwB: Atari 7800 Expansion Connector
Atari 7800 Expansion
Gnd +5v CVideo MLum0 Mlum3 Blank OscDis ExtMen Gnd --1-- --2-- --3-- --4-- --5-- --6-- --7-- ---8-- --9-- -18-- -17-- -16-- -15-- -14-- -13-- -12-- --11-- -10-- Gnd Audio Rdy MCol MLum2 MLum1 Msync Clk2 ExtOsc
(At the Atari)
UNKNOWN CONNECTOR at the Atari.
| Pin | Name | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | +5V | +5 VDC |
| 3 | CVIDEO | Input to RF modulator (Video+Audio) |
| 4 | MLUM0 | Maria Luminance Bit 0 |
| 5 | MLUM3 | Maria Luminance Bit 3 |
| 6 | BLANK | Blanking output |
| 7 | OSCDIS | Disable 14.31818 MHz Master Clock |
| 8 | EXTMEN | External Maria Enable Input |
| 9 | GND | Ground |
| 10 | EXTOSC | External clock to replace Master Clock |
| 11 | CLK2 | Phase 2 Clock from the 6502 |
| 12 | MSYNC | Maria Composite Sync |
| 13 | MLUM1 | Maria Luminance Bit 1 |
| 14 | MLUM2 | Maria Luminance Bit 2 |
| 15 | MCOL | Maria Color Phase Angle |
| 16 | RDY | Input to the 6502 |
| 17 | AUDIO | Audio |
| 18 | GND | Ground |