Gallag - Gallaga Bootleg

PCB

Screen shots

Pinouts

This is the same way up as the picture, so 22 is on top nearest the cyan capacitor.

Components Solder

Ground

22

Z

Ground

Ground

21

Y

Ground

+5v 

20

X

+5v 

+5v 

19

W

+5v 

+12v 

18

V

+12v 

N.C.

17

U

Speaker+

N.C.

16

T

N.C.

N.C.

15

S

N.C.

N.C.

14

R

N.C.

N.C.

13

P

N.C.

N.C.

12

N

Test

Coin 1

11

M

Coin 2

Start 1

10

L

Start 2

Fire 1

9

K

Fire 2

Left 1

8

J

Left 2

Right 1

7

H

Right 2

N.C.

6

F

Table

N.C.

5

E

N.C.

+5v

4

D

+5v

+5v

3

C

+5v

Ground

2

B

Ground

Ground

1

A

Ground

Speaker- can be connected to Ground.

Video 

1

2

3

4

5

Ground

Sync Red Blue Green

Upgrades

Replacing the eprom at 4C with the equivalent one from Galaga (gg1-2 or gg1-2b.3m depending upon the bootleg) , the name will be changed to Galaga and the copyright message put back to normal.

If you also replace the eprom on the video board at 5R with the character rom from Galaga (gg1-9.4l) then the logo will be back as well.

You can also fix the off-white colouring by replacing some of the resistors on the video board. Check out Jrok's web site here for instructions on this.