ToToTEK.COM

[toseye]

I found this on http://dana.ucc.nau.edu/~dbt/VBProg.html can this be done is so can it be done tototek's Genesis 64M Flash Cart

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Making a Genesis Copier to VB adapter
By David Tucker (dbt@dana.ucc.nau.edu)
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The basic concept is this, you have to wire an adapter up to the VB cart
to make it look like a genesis cart (the reverse can be applied to play
games back on a VB). The easiest approach would be to take an old Genesis
cart that you no longer wanted, remove the ROM, and wire up the cart to a
VB edge connector. The only source I know of for VB edge connectors, is
a real VB (ouch). If your not willing to cut up an existing VB for the
edge connector, you can use thin 'solid' copper wires that can be pushed
into the holes on the VB cartridge, than each time you change a cartridge you
have to reinsert the wires into all the holes (a creative amount of hot melt
glue would help keep the wires in the proper order for quicker swapping...
To wire up the adapter, simple hook the wires from the Genesis cartridge
to the corresponding pins on the VB cartridge following the pinouts of both
cartridges below. The important lines are the 'data', 'address' and '/CS'/'/CE' lines.
The ROM in the genesis cartridge is identical to the ROM in the VB (different
size/pinout though), if it helps you can simply run the wires from the VB edge
connector to the old holes where the ROM sat in the genesis cartridge.


-------------------------
Genesis Cartridge pinout
-------------------------
The cartridge pins are numbered A1-A32 and B1-B32, left-to-right, with
the A row toward the back of the Genesis and the B row toward the front.

The "i" and "o" labels describe whether a signal is an input and/or an output
to/from the Genesis.

Signals with an "o" are output from the Genesis to the cartridge.
Signals with an "i" are input to the Genesis from the cartridge.

N/A - not applicable to the current design...

Pin Signal Pin Signal
--------------------------------------
A1 -- gnd B1 N/A
A2 -- +5v B2 N/A
A3 o a8 B3 N/A
A4 o a11 B4 o a9
A5 o a7 B5 o a10
A6 o a12 B6 o a18
A7 o a6 B7 o a19
A8 o a13 B8 o a20
A9 o a5 B9 o a21
A10 o a14 B10 o a22
A11 o a4 B11 o a23
A12 o a15 B12 N/A
A13 o a3 B13 N/A
A14 o a16 B14 N/A
A15 o a2 B15 N/A
A16 o a17 B16 o /C_OE (Output Enable)
A17 o a1 B17 o /C_CE (Chip Enable)
A18 -- gnd B18 N/A
A19 io d7 B19 N/A
A20 io d0 B20 N/A
A21 io d8 B21 N/A
A22 io d6 B22 io d15
A23 io d1 B23 io d14
A24 io d9 B24 io d13
A25 io d5 B25 io d12
A26 io d2 B26 N/A
A27 io d10 B27 N/A
A28 io d4 B28 o /LDSW (not used)
A29 io d3 B29 o /UDSW (not used)
A30 io d11 B30 N/A
A31 -- +5 B31 N/A
A32 -- gnd B32 i /CART_IN (not used)


-----------------------------
Virtual Boy Cartridge Pinout
-----------------------------

---------------------
- Cartridge Pinout -
---------------------

Edge
Con Rom Ram
--- --- ---
1 (gnd)
3 27 (/WE)
5 (/NC)
7 26 (CS2)
9 (/NC)
11 2 (A18)
13 3 (A17)
15 4 (A7) 3 (A7)
17 5 (A6) 4 (A6)
19 6 (A5) 5 (A5)
21 7 (A4) 6 (A4)
23 8 (A3) 7 (A3)
25 9 (A2) 8 (A2)
27 10 (A1) 9 (A1)
29 11 (A0) 10 (A0)
31 12 (/CE)
33 (gnd) 13 (GND)
35 14 (/OE) 22 (/OE)
37 15 (D0) 11 (D0)
39 16 (D
41 17 (D1) 12 (D1)
43 18 (D9)
45 19 (D2) 13 (D2)
47 20 (D10)
49 21 (D3) 15 (D3)
51 22 (D11)
53 (+5v)
55 (pin 55-57)
57 (pin 55-57)
59 (gnd)
----------------------------
2 (gnd)
4 (/NC)
6 20 (/CS1)
8 (+5v)
10 (/NC)
12 (/NC)
14 44 (/NC)
16 43 (A19)
18 42 (A 25 (A
20 41 (A9) 24 (A9)
22 40 (A10) 21 (A10)
24 39 (A11) 23 (A11)
26 38 (A12) 2 (A12)
28 37 (A13)
30 36 (A14)
32 35 (A15)
34 34 (A16)
36 (+5v) 33 (/BYTE)
38 31 (D15)
40 30 (D7) 19 (D7)
42 29 (D14)
44 28 (D6) 18 (D6)
46 27 (D13)
48 26 (D5) 17 (D5)
50 25 (D12)
52 24 (D4) 16 (D4)
54 (+5v) 23 (Vdd)
56 (pin 56-5
58 (pin 56-5
60 (gnd)
-----------------------------
(ROM)
Toshiba TC53x200 or equivalent mask ROM. Can be replaced with a 27Cx00 EPROM,
or 29Wx00 flash ROM, where x is 2, 4, 8, or 16.
1 - /NC
44 - /NC Used for the 32mbit ROM... (would be A20)
23 - +5v
33 - /BYTE (Held high the chip is in word mode)
13,32 - GND

(RAM)
Cypress CY6264 or equivalent SRAM.

Note - when reading the ROM, you should drive pins 3 and 6 high (+5v) and
pin 7 low (gnd) so the ram does not interfere with the read operations.

[rbudrick]

How the hell? I can't believe someone figured something like this out...

-Rob