Atari 5200 Expansion connector
| Pin | Name |
|---|---|
| 1 | +5 VDC |
| 2 | Audio Out (2 port) |
| 3 | Ground |
| 4 | R/W Early |
| 5 | Enable E0-EF |
| 6 | D6 |
| 7 | D4 |
| 8 | D2 |
| 9 | D0 |
| 10 | IRQ |
| 11 | Ground |
| 12 | Serial Data In |
| 13 | Serial In Clock |
| 14 | Serial Out Clock |
| 15 | Serial Data Out |
| 16 | Audio In |
| 17 | A14 |
| 18 | System Clock 01 |
| 19 | A11 |
| 20 | A7 |
| 21 | A6 |
| 22 | A5 |
| 23 | A4 |
| 24 | A3 |
| 25 | A2 |
| 26 | A1 |
| 27 | A0 |
| 28 | Ground |
| 29 | D1 |
| 30 | D3 |
| 31 | D5 |
| 32 | D7 |
| 33 | Not connected |
| 34 | Ground |
| 35 | Not connected |
| 36 | +5 VDC |
Atari 7800 Expansion connector
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
| 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 |
correct
incorrect