[08/02/96]

Conversion from Scramble to Karateco Super Cobra
------------------------------------------------

Whether this version of Super Cobra is licensed or a pirate I don't know.
I also don't know whether there has been any software changes to accomodate
the Scramble board rather than the original Super Cobra board.


Sound Board
-----------
Lift/Cut pin of 1C (LS00) pin 8.
Lift/Cut pin of 1C (LS00) pin 6.
Add link 1C (LS00) PAD 8 -> 1C (LS00) pin 9.
Add link 1C (LS00) PAD 6 -> 1C (LS00) pin 10.
Add link 3D (AY-3-8910) pin 8 -> 3D (AY-3-8910) pin 10. (?)

Video Board
-----------
4 2716 EPROMS have been piggy backed onto 2J, 2L, 2M & 2P. All the signals connect
through except pin 20. The ROM image files are appendixed as follows:-

_U = Upper piggy back ROM.
_L = Lower (normal) ROM.

2J_U (2716) pin 20 -> 3F (LS138) pin 15.
2L_U (2716) pin 20 -> 3F (LS138) pin 14.
2M_U (2716) pin 20 -> 3F (LS138) pin 13.
2P_U (2716) pin 20 -> 3F (LS138) pin 12.

The following track cuts are required:-
 Cut trace RIBBON (conn) pin 3 (Bottom).
 Cut trace RIBBON (conn) pin 5 (Bottom).
 Cut trace 4B (LS139) pin 5 (Bottom).
 Cut trace 3D (LS138) pin 4 (Top).
 Cut trace 4F (LS32)  pin 1 (Bottom).

Add link 3B (LS138) pin 15 -> 4F (LS32)  pin 13.
Add link 4B (LS139) pin  5 -> 3F (LS138) pin 4.
Add link 4B (LS139) pin  6 -> 3B (LS138) pin 4.
Add link 3B (LS138) pin 12 -> RIBBON (conn) pin 3.
Add link 3B (LS138) pin 11 -> RIBBON (conn) pin 5.




[May/25/2002]

This set is coming from an original SEGA Super Cobra !

This set run on a G.G.I Corporation PCBboard with a SEGA PCB number:

834-0131

About the color prom, the color prom is a MMI 6331, 
it has been read as a 82s123 from Phillips/sgs BUT, the checksum isn't 
recocgnized as the one used in MAME with Super Cobra !
I doubt about it, I'll redump it soon to be sure !

Provided to you on 25/5/2002.

-

[Apr/11/2005]

Super Cobras (Stern)  
Stern 1981  

ROMs: 6x TMS2532JL  
Note: Blister, no PCB  

Funzionamento Non testata  
In vendita No  

Dumped 21/05/2005  

-

[MAME]

Super Cobra 

Main CPU:
--------

There seems to be 2 main board types:

Type 1      Type 2

0000-7fff   0000-7fff	ROM (not all games use the entire range)
8000-87ff   8000-87ff	RAM
8800-8bff   9000-93ff	video RAM
9000-903f   8800-883f	screen attributes
9040-905f   8840-885f	sprites
9060-907f   8860-887f	bullets


read:
b000      	9800		watchdog reset

9800-9803	a000-a00f	PPI8255-0
      					Port A - IN0
	      				Port B - IN1
						Port C - IN2

a000-a003	a800-a80f	PPI8255-1


write:

9800-9803	a000-a00f	PPI8255-0

a000-a003	a800-a80f	PPI8255-1
						Port A - To AY-3-8910 port A (commands for the audio CPU)
						Port B - bit 3 = trigger interrupt on audio CPU

a801      	b004		interrupt enable
a802      	b006		coin counter
a803      	b002		? (POUT1)
a804      	b000		stars on
a805      	b00a		? (POUT2)
a806      	b00e		screen vertical flip
a807      	b00c		screen horizontal flip


Sound CPU:

0000-1fff   ROM
8000-83ff   RAM
9000-9fff   R/C Filter (2 bits for each of the 6 channels)

I/O:

10  		AY8910 #0 control
20			AY8910 #0 data port
40			AY8910 #1 control port
80			AY8910 #1 data port

-


