Genesis:Connector Pinouts: Difference between revisions

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==Cartridge Port==
==Cartridge Port==
<small>Note: The "A" row is towards the back and numbered from left to right. The "B" row pins are towards the front and also numbered from left to right. This table is oriented so the front of the port is facing left.</small>
{| class="wikitable"
|+
!Pin #
!Description
!Pin #
!Description
|-
|'''B1'''
|SL1 (External Left Audio) / Unused on Genesis 3
|'''A1'''
|Ground
|-
|'''B2'''
|/MRES
|'''A2'''
|5V
|-
|'''B3'''
|SR1 (External Right Audio) / Unused on Genesis 3
|'''A3'''
|VA8
|-
|'''B4'''
|VA9
|'''A4'''
|VA11
|-
|'''B5'''
|VA10
|'''A5'''
|VA7
|-
|'''B6'''
|VA18
|'''A6'''
|VA12
|-
|'''B7'''
|VA19
|'''A7'''
|VA6
|-
|'''B8'''
|VA20
|'''A8'''
|VA13
|-
|'''B9'''
|VA21
|'''A9'''
|VA5
|-
|'''B10'''
|VA22
|'''A10'''
|VA14
|-
|'''B11'''
|VA23
|'''A11'''
|VA4
|-
|'''B12'''
|YS (Blanking) / Unused on Genesis 3
|'''A12'''
|VA15
|-
|'''B13'''
|VSYNC (Vertical Sync) / Unused on Genesis 3
|'''A13'''
|VA3
|-
|'''B14'''
|HSYNC (Horizontal Sync) / Unused on Genesis 3
|'''A14'''
|VA16
|-
|'''B15'''
|EDCLK / Unused on Genesis 3
|'''A15'''
|VA2
|-
|'''B16'''
|/CAS0
|'''A16'''
|VA17
|-
|'''B17'''
|/CE_0 (Cartridge Enable)
|'''A17'''
|VA1
|-
|'''B18'''
|/AS (Address Strobe)
|'''A18'''
|Ground
|-
|'''B19'''
|VCLK / Unused on Genesis 3
|'''A19'''
|VD7
|-
|'''B20'''
|/DTACK (Data Transfer Acknowledge)
|'''A20'''
|VD0
|-
|'''B21'''
|/CAS2 / Unused on Genesis 3
|'''A21'''
|VD8
|-
|'''B22'''
|VD15
|'''A22'''
|VD6
|-
|'''B23'''
|VD14
|'''A23'''
|VD1
|-
|'''B24'''
|VD13
|'''A24'''
|VD9
|-
|'''B25'''
|VD12
|'''A25'''
|VD5
|-
|'''B26'''
|/ASEL
|'''A26'''
|VD2
|-
|'''B27'''
|/VRES (68000 Reset)
|'''A27'''
|VD10
|-
|'''B28'''
|/LWR
|'''A28'''
|VD4
|-
|'''B29'''
|/UWR
|'''A29'''
|VD3
|-
|'''B30'''
|/M3 (Master System enable, must be held low to activate) / Unused on Genesis 3
|'''A30'''
|VD11
|-
|'''B31'''
|/TIME
|'''A31'''
|5V
|-
|'''B32'''
|/CART / Unused on Genesis 3
|'''A32'''
|Ground
|}


==Controller Port==
==Controller Port==

Revision as of 18:32, 11 February 2023

AV Out (Model 1)

Note: Connector is the female end at the console.

8pindin262.png
Pin # Description
1 Composite Video Out / Unused (French Mega Drive)
2 Ground
3 Audio Out
4 Green
5 5V
6 Composite Sync
7 Red
8 Blue

AV Out (Model 2 and 3)

This connector is also used in the Genesis Nomad, Mega Jet, 32X, CDX, and most X'Eye consoles. Ground is at the cable shroud.

Note: Connector is the female end at the console.

9pinminidin.png
Pin # Description
1 Blue
2 5V
3 Green
4 Composite Video
5 Composite Sync
6 Mono Audio
7 Red
8 Left Audio / Mono Audio (Genesis 3)
9 Right Audio / Unused (Genesis 3)

Cartridge Port

Note: The "A" row is towards the back and numbered from left to right. The "B" row pins are towards the front and also numbered from left to right. This table is oriented so the front of the port is facing left.

Pin # Description Pin # Description
B1 SL1 (External Left Audio) / Unused on Genesis 3 A1 Ground
B2 /MRES A2 5V
B3 SR1 (External Right Audio) / Unused on Genesis 3 A3 VA8
B4 VA9 A4 VA11
B5 VA10 A5 VA7
B6 VA18 A6 VA12
B7 VA19 A7 VA6
B8 VA20 A8 VA13
B9 VA21 A9 VA5
B10 VA22 A10 VA14
B11 VA23 A11 VA4
B12 YS (Blanking) / Unused on Genesis 3 A12 VA15
B13 VSYNC (Vertical Sync) / Unused on Genesis 3 A13 VA3
B14 HSYNC (Horizontal Sync) / Unused on Genesis 3 A14 VA16
B15 EDCLK / Unused on Genesis 3 A15 VA2
B16 /CAS0 A16 VA17
B17 /CE_0 (Cartridge Enable) A17 VA1
B18 /AS (Address Strobe) A18 Ground
B19 VCLK / Unused on Genesis 3 A19 VD7
B20 /DTACK (Data Transfer Acknowledge) A20 VD0
B21 /CAS2 / Unused on Genesis 3 A21 VD8
B22 VD15 A22 VD6
B23 VD14 A23 VD1
B24 VD13 A24 VD9
B25 VD12 A25 VD5
B26 /ASEL A26 VD2
B27 /VRES (68000 Reset) A27 VD10
B28 /LWR A28 VD4
B29 /UWR A29 VD3
B30 /M3 (Master System enable, must be held low to activate) / Unused on Genesis 3 A30 VD11
B31 /TIME A31 5V
B32 /CART / Unused on Genesis 3 A32 Ground

Controller Port

Note: Female is connector at the console. Male is connector at the controller. Diagram pictured is of the connector at the controller end.

DB9 Female.svg
Pin # Description
1 Up/Button Z
2 Down/Button Y
3 Left/Ground/Button X
4 Right/Ground/Mode
5 5V
6 Button B/A
7 Multiplexer Select
8 Ground
9 Button C/Start

Expansion Port

EXT Port

This connector is only found on older model 1 consoles, all model 1 Japanese Mega Drive consoles, the TeraDrive and Wondermega. It is located at the rear of these consoles, and is essentially identical to the controller ports, though is typically used to send serial data to the VDP instead of being used as an extra controller port. The most notable accessory to use this connector is the Mega Modem, which was only released in Japan.

Note: Diagram pictured is of the connector at the console end.

DB9 Female.svg
Pin # Description
1 Up
2 Down
3 Left/Ground
4 Right/Ground
5 5V
6 Button B/A
7 Multiplexer Select
8 Ground
9 Button C/Start
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