Building a 32mbit flash cart

Here's the wiring diagram for putting a AMD AM29F032B 32mbit flash ROM into a GameBoy Color cart. You can get a AM29F032B-xxEx (x = don't care) from http://www.marshall.com for about US$15 + shipping.

I recommend using a Zelda DX cart as it is one of the few non-Japanese carts that contains 32k bytes of cart RAM.

Game & Watch Gallery 2 can be used but only has 8k bytes of cart RAM.

To program the finished cart you need ReadPlus V3.25 or later.

Finished 32mbit cart http://home.hiwaay.net/~jfrohwei/gameboy/32mbit.jpg
MBC5 Pinouts http://home.hiwaay.net/~jfrohwei/gameboy/mbc5.gif
23C16120 Pinouts http://home.hiwaay.net/~jfrohwei/gameboy/23c64000.gif
LH538 Pinouts http://home.hiwaay.net/~jfrohwei/gameboy/lh534.gif
Published GBC carts http://home.hiwaay/net/~jfrohwei/gameboy/gbcmbc.txt

 

Zelda DX for GBC Game & Watch Gallery 2 for GBC
AM29F032B-xxEx (x = don't care)
|
|         SEC KM23C16120 ROM
|         |

Pin    Pin
1       2
2       3
3       34
4       35
5       36
6       37
7       38
8       39
9       12
10     23
12     Cart Pin 30
13     40
14     41
15     42
16     4
17     5
18     6
19     7
20     8
21     9
22    10
23    11
24    31
25    15
26    17
27    19
28    21
29    13
30    32
31    23
32    24
33    26
34    28
35    30
37    14
38    Cart pin 3
39    44
40    43		 AM29F032B-xxEx (x = don't care)
|
|         LH538 ROM
|         |

Pin    Pin
1       1
2       31
3       30
4       2
5       3
6       29
7       28
8       4
9       22
10     32
12     Cart Pin 30
13     25
14     23
15     26
16     27
17     5
18     6
19     7
20     8
21     9
22    10
23    11
24    12
25    13
26    14
27    15
28    17
29    16
30    16
31    32
32    18
33    19
34    20
35    21
37    24
38    Cart pin 3
39    MBC5-RA21
40    MBC5-RA20