Mega Drive Expansion

From HwB

(Difference between revisions)

Revision as of 16:50, 29 March 2007

Todo: This page needs some editing.

Available at Sega Mega Drive/Genesis. Used for connection of Sega Mega-CD.

Pinout

Edge connector

Pin	Name
A01	GND
A02	NC
A03	/C_OE
A04	D00
A05	D01
A06	D02
A07	D03
A08	D04
A09	D05
A10	D06
A11	D07
A12	GND
A13	D08
A14	D09
A15	D10
A16	D11
A17	D12
A18	D13
A19	D14
A20	D15
A21	Connected to pin 87 of chip 315-5364
A22	/LO_MEM
A23	Connected to pin 91 of chip 315-5364
A24	Connected to pin 86 of chip 315-5364
A25	Connected to pin 10 of chip 315-5309
A26	+5v
A27	NC
A28	VCC IN*
A29	Audio*
A30	GND

Pin	Name
B01	GND
B02	Connected to pin 11 of chip 315-5309
B03	A01
B04	A02
B05	A03
B06	A04
B07	A05
B08	A06
B09	A07
B10	A08
B11	A09
B12	GND
B13	A10
B14	A11
B15	A12
B16	A13
B17	A14
B18	A15
B19	A16
B20	A17
B21	/LDS
B22	/UDSW
B23	Cart B21*
B24	Connected to pin 85 of chip 315-5364
B25	Connected to pin 10 of chip 315-5309
B26	+5v
B27	NC
B28	VCC IN*
B29	Audio*
B30	GND

Notes:

VCC IN - It appears the SGCD is capable of powering the main console through these pins. Power from them is routed directly to the console power switch through a pair of diodes.
Cart B21 - This pin connects to the cartridge slot B21, function unknown.
Audio - This is assumed functional, but is untested.

Sources

GameSX: Sega Genesis/MegaDrive Expansion Port Pinout

@@ Line 6: / Line 6: @@
 Edge connector
-pin	Name
+{| {{border}}
-A01	GND
+! Pin !! Name
-A02	NC
+|-
-A03	/C_OE
+| A01 || GND
-A04	D00
+|-
-A05	D01
+| A02 || NC
-A06	D02
+|-
-A07	D03
+| A03 || /C_OE
-A08	D04
+|-
-A09	D05
+| A04 || D00
-A10	D06
+|-
-A11	D07
+| A05 || D01
-A12	GND
+|-
-A13	D08
+| A06 || D02
-A14	D09
+|-
-A15	D10
+| A07 || D03
-A16	D11
+|-
-A17	D12
+| A08 || D04
-A18	D13
+|-
-A19	D14
+| A09 || D05
-A20	D15
+|-
-A21	Connected to pin 87 of chip 315-5364
+| A10 || D06
-A22	/LO_MEM
+|-
-A23	Connected to pin 91 of chip 315-5364
+| A11 || D07
-A24	Connected to pin 86 of chip 315-5364
+|-
-A25	Connected to pin 10 of chip 315-5309
+| A12 || GND
-A26	+5v
+|-
-A27	NC
+| A13 || D08
-A28	VCC IN*
+|-
-A29	Audio*
+| A14 || D09
-A30	GND
+|-
+| A15 || D10
+|-
+| A16 || D11
+|-
+| A17 || D12
+|-
+| A18 || D13
+|-
+| A19 || D14
+|-
+| A20 || D15
+|-
+| A21 || Connected to pin 87 of chip 315-5364
+|-
+| A22 || /LO_MEM
+|-
+| A23 || Connected to pin 91 of chip 315-5364
+|-
+| A24 || Connected to pin 86 of chip 315-5364
+|-
+| A25 || Connected to pin 10 of chip 315-5309
+|-
+| A26 || +5v
+|-
+| A27 || NC
+|-
+| A28 || VCC IN*
+|-
+| A29 || Audio*
+|-
+| A30 || GND
+|}
-pin	Name
+{| {{border}}
-B01	GND
+! Pin !! Name
-B02	Connected to pin 11 of chip 315-5309
+|-
-B03	A01
+| B01 || GND
-B04	A02
+|-
-B05	A03
+| B02 || Connected to pin 11 of chip 315-5309
-B06	A04
+|-
-B07	A05
+| B03 || A01
-B08	A06
+|-
-B09	A07
+| B04 || A02
-B10	A08
+|-
-B11	A09
+| B05 || A03
-B12	GND
+|-
-B13	A10
+| B06 || A04
-B14	A11
+|-
-B15	A12
+| B07 || A05
-B16	A13
+|-
-B17	A14
+| B08 || A06
-B18	A15
+|-
-B19	A16
+| B09 || A07
-B20	A17
+|-
-B21	/LDS
+| B10 || A08
-B22	/UDSW
+|-
-B23	Cart B21*
+| B11 || A09
-B24	Connected to pin 85 of chip 315-5364
+|-
-B25	Connected to pin 10 of chip 315-5309
+| B12 || GND
-B26	+5v
+|-
-B27	NC
+| B13 || A10
-B28	VCC IN*
+|-
-B29	Audio*
+| B14 || A11
-B30	GND
+|-
+| B15 || A12
+|-
+| B16 || A13
+|-
+| B17 || A14
+|-
+| B18 || A15
+|-
+| B19 || A16
+|-
+| B20 || A17
+|-
+| B21 || /LDS
+|-
+| B22 || /UDSW
+|-
+| B23 || Cart B21*
+|-
+| B24 || Connected to pin 85 of chip 315-5364
+|-
+| B25 || Connected to pin 10 of chip 315-5309
+|-
+| B26 || +5v
+|-
+| B27 || NC
+|-
+| B28 || VCC IN*
+|-
+| B29 || Audio*
+|-
+| B30 || GND
+|}
+Notes:
 * VCC IN - It appears the SGCD is capable of powering the main console through these pins. Power from them is routed directly to the console power switch through a pair of diodes.
 * Cart B21 - This pin connects to the cartridge slot B21, function unknown.
@@ Line 78: / Line 143: @@
 [[Category:Connector]]
+[[Category:Expansion]]
 [[Category:Obsolete]]