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 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 |
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