Hi,
I've made a small programm that allows you to extract the information of your I/O so you can know what characteristics your I/O has, what games it can be compatible with, etc.
Here is the program and source code. Notice that the source code can be improved
the COM port is still hardcoded so I uploaded 2 executables one for COM1 and one for COM3. It's compiled using Bloodshed Dev C++ (www.bloodshed.net)
http://www.mediafire.com/file/jtjb6m6yylmdqpi/JVS+Info.7z
In order to connect it to a normal PC, you need a rs232-rs242 adapter like this one:
http://www.ebay.es/itm/Convertisseu...hash=item45facbc0d1:m:mPR-djXLSdtkuMFYQaiHcGw
For the JVS cable, I've used a normal USB connector from i.e. a printer cable.
You need to connect just 3 cables. Notice that we will ignore the pin SENSE and use only TX+,TX- and GND.

These are the answers that I got using it with the JVS I/O that I have:

SEGA (837-14572) TYPE 3
-----------------------
Sending ReadID command...
Answer received of 0000003c bytes read
e0 00 39 01 01 53 45 47 41 20 43 4f 52 50 4f 52 41 54 49 4f
4e 3b 49 2f 4f 20 42 44 20 4a 56 53 3b 38 33 37 2d 31 34 35
37 32 3b 56 65 72 31 2e 30 30 3b 32 30 30 35 2f 31 30 00 4c
in ASCII -> "SEGA CORPORATION;I/O BD JVS;837-14572;Ver1.00;2005/10"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0e 00 02 02 00 00 03 08 0a 00 12 14 00 00 00 66

SEGA (837-13551-92) TYPE 1
--------------------------
Sending ReadID command...
Answer received of 00000040 bytes read
e0 00 3d 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 42 44 20 4a 56 53 3b 38 33
37 2d 31 33 35 35 31 20 3b 56 65 72 31 2e 30 30 3b 39 38 2f 31 30 00 58
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O BD JVS;837-13551 ;Ver1.00;98/10"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0d 00 02 02 00 00 03 08 00 00 12 06 00 00 00 4d

SEGA (837-13741) TYPE 2
-----------------------
Sending ReadID command...
Answer received of 00000045 bytes read
e0 00 42 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 38 33 37 2d 31 33 38 34 34 2d 30 31 20
49 2f 4f 20 43 4e 54 4c 20 42 44 32 20 3b 56 65 72 31 2e 30
30 3b 39 39 2f 30 37 00 4c
in ASCII -> "SEGA ENTERPRISES,LTD.;837-13844-01 I/O CNTL BD2 ;Ver1.00;99/07"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0c 00 02 02 00 00 03 08 00 00 12 16 00 00 00 5c

SEGA (838-13683-93) JAMMA JVS
-----------------------------
Sending ReadID command...
Answer received of 0000003a bytes read
e0 00 37 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 38 33 38 2d 31 33 36 38 33
42 20 3b 56 65 72 31 2e 30 37 3b 39 39 2f 30 36 00 d4
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O 838-13683B ;Ver1.07;99/06"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000013 bytes read
e0 00 10 01 01 01 02 0f 00 02 02 00 00 03 08 00 00 00 33

SEGA (838-13683-02) JAMMA JVS
-----------------------------
Sending ReadID command...
Answer received of 0000003a bytes read
e0 00 37 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 38 33 38 2d 31 33 36 38 33
44 20 3b 56 65 72 31 2e 30 39 3b 39 39 2f 31 31 00 d4
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O 838-13683D ;Ver1.09;99/11"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0b 00 02 02 00 00 03 08 00 00 12 08 00 00 00 4d

CAPCOM JAMMA JVS
----------------
Sending ReadID command...
Answer received of 0000002d bytes read
e0 00 2a 01 01 4e 6f 20 42 72 61 6e 64 3b 4e 41 4f 4d 49 20
43 6f 6e 76 65 72 74 65 72 39 38 37 30 31 3b 76 65 72 32 2e
30 3b 20 00 f3
in ASCII -> "No Brand;NAOMI Converter98701;ver2.0;"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000013 bytes read
e0 00 10 01 01 01 02 0c 00 02 02 00 00 03 08 00 00 00 30

TAITO K91X1130A JVS
-------------------
Sending ReadID command...
Answer received of 00000037 bytes read
e0 00 34 01 01 54 41 49 54 4f 20 43 4f 52 50 2e 3b 55 20 4a 56 53 20 50 43 42 3b 46 4a 2d 74 79 70 65 3b 56 65 72 32 2e
32 33 3b 32 30 30 37 2e 30 38 2e 30 37 00 e7
in ASCII -> "TAITO CORP.;U JVS PCB;FJ-type;Ver2.23;2007.08.07"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 30 36
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 0000001f bytes read
e0 00 1c 01 01 01 01 13 00 02 01 00 00 03 07 0a 00 06 10 10 01 12 0d 00 00 13 06 00 00 00 a9
NAMCO V288 JV2RS PCB (FCB1)
---------------------------
Sending ReadID command...
Answer received of 00000039 bytes read
e0 00 36 01 01 6e 61 6d 63 6f 20 6c 74 64 2e 3b 46 43 42 3b 56 65 72 31 2e 30 32 3b 4a 50 4e 2c 54 6f 75 63 68 50 61 6e
65 6c 26 4d 75 6c 74 69 70 75 72 70 6f 73 65 00 88
in ASCII -> "namco ltd.;FCB;Ver1.02;JPN,TouchPanel&Multipurpose"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 30 36
Sending getfeatures_code command...
Answer received of 00000023 bytes read
e0 00 20 01 01 01 01 10 00 02 02 00 00 03 07 0a 00 04 02 00 00 06 10 10 01 12 06 00 00 13 02 00 00 00 a6
NAMCO FCA2B PCB (FCAF1) AND FCA PCB (FCAF11)
---------------------------
Sending ReadID command...
Answer received of 00000041 bytes read
e0 00 3e 01 01 6e 61 6d 63 6f 20 6c 74 64 2e 3b 46 43 41 2d
31 3b 56 65 72 31 2e 30 31 3b 4a 50 4e 2c 4d 75 6c 74 69 70
75 72 70 6f 73 65 20 2b 20 52 6f 74 61 72 79 20 45 6e 63 6f
64 65 72 00 9f
in ASCII -> "namco ltd.;FCA-1;Ver1.01;JPN,Multipurpose + Rotary Encoder"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 0000001f bytes read
e0 00 1c 01 01 01 01 10 00 02 02 00 00 03 07 00 00 04 02 00 00 12 06 00 00 13 04 00 00 00 73
I've made a small programm that allows you to extract the information of your I/O so you can know what characteristics your I/O has, what games it can be compatible with, etc.
Here is the program and source code. Notice that the source code can be improved

http://www.mediafire.com/file/jtjb6m6yylmdqpi/JVS+Info.7z
In order to connect it to a normal PC, you need a rs232-rs242 adapter like this one:
http://www.ebay.es/itm/Convertisseu...hash=item45facbc0d1:m:mPR-djXLSdtkuMFYQaiHcGw
For the JVS cable, I've used a normal USB connector from i.e. a printer cable.
You need to connect just 3 cables. Notice that we will ignore the pin SENSE and use only TX+,TX- and GND.

These are the answers that I got using it with the JVS I/O that I have:

SEGA (837-14572) TYPE 3
-----------------------
Sending ReadID command...
Answer received of 0000003c bytes read
e0 00 39 01 01 53 45 47 41 20 43 4f 52 50 4f 52 41 54 49 4f
4e 3b 49 2f 4f 20 42 44 20 4a 56 53 3b 38 33 37 2d 31 34 35
37 32 3b 56 65 72 31 2e 30 30 3b 32 30 30 35 2f 31 30 00 4c
in ASCII -> "SEGA CORPORATION;I/O BD JVS;837-14572;Ver1.00;2005/10"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0e 00 02 02 00 00 03 08 0a 00 12 14 00 00 00 66

SEGA (837-13551-92) TYPE 1
--------------------------
Sending ReadID command...
Answer received of 00000040 bytes read
e0 00 3d 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 42 44 20 4a 56 53 3b 38 33
37 2d 31 33 35 35 31 20 3b 56 65 72 31 2e 30 30 3b 39 38 2f 31 30 00 58
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O BD JVS;837-13551 ;Ver1.00;98/10"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0d 00 02 02 00 00 03 08 00 00 12 06 00 00 00 4d

SEGA (837-13741) TYPE 2
-----------------------
Sending ReadID command...
Answer received of 00000045 bytes read
e0 00 42 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 38 33 37 2d 31 33 38 34 34 2d 30 31 20
49 2f 4f 20 43 4e 54 4c 20 42 44 32 20 3b 56 65 72 31 2e 30
30 3b 39 39 2f 30 37 00 4c
in ASCII -> "SEGA ENTERPRISES,LTD.;837-13844-01 I/O CNTL BD2 ;Ver1.00;99/07"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0c 00 02 02 00 00 03 08 00 00 12 16 00 00 00 5c

SEGA (838-13683-93) JAMMA JVS
-----------------------------
Sending ReadID command...
Answer received of 0000003a bytes read
e0 00 37 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 38 33 38 2d 31 33 36 38 33
42 20 3b 56 65 72 31 2e 30 37 3b 39 39 2f 30 36 00 d4
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O 838-13683B ;Ver1.07;99/06"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000013 bytes read
e0 00 10 01 01 01 02 0f 00 02 02 00 00 03 08 00 00 00 33

SEGA (838-13683-02) JAMMA JVS
-----------------------------
Sending ReadID command...
Answer received of 0000003a bytes read
e0 00 37 01 01 53 45 47 41 20 45 4e 54 45 52 50 52 49 53 45
53 2c 4c 54 44 2e 3b 49 2f 4f 20 38 33 38 2d 31 33 36 38 33
44 20 3b 56 65 72 31 2e 30 39 3b 39 39 2f 31 31 00 d4
in ASCII -> "SEGA ENTERPRISES,LTD.;I/O 838-13683D ;Ver1.09;99/11"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000017 bytes read
e0 00 14 01 01 01 02 0b 00 02 02 00 00 03 08 00 00 12 08 00 00 00 4d

CAPCOM JAMMA JVS
----------------
Sending ReadID command...
Answer received of 0000002d bytes read
e0 00 2a 01 01 4e 6f 20 42 72 61 6e 64 3b 4e 41 4f 4d 49 20
43 6f 6e 76 65 72 74 65 72 39 38 37 30 31 3b 76 65 72 32 2e
30 3b 20 00 f3
in ASCII -> "No Brand;NAOMI Converter98701;ver2.0;"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 00000013 bytes read
e0 00 10 01 01 01 02 0c 00 02 02 00 00 03 08 00 00 00 30

TAITO K91X1130A JVS
-------------------
Sending ReadID command...
Answer received of 00000037 bytes read
e0 00 34 01 01 54 41 49 54 4f 20 43 4f 52 50 2e 3b 55 20 4a 56 53 20 50 43 42 3b 46 4a 2d 74 79 70 65 3b 56 65 72 32 2e
32 33 3b 32 30 30 37 2e 30 38 2e 30 37 00 e7
in ASCII -> "TAITO CORP.;U JVS PCB;FJ-type;Ver2.23;2007.08.07"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 30 36
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 0000001f bytes read
e0 00 1c 01 01 01 01 13 00 02 01 00 00 03 07 0a 00 06 10 10 01 12 0d 00 00 13 06 00 00 00 a9

NAMCO V288 JV2RS PCB (FCB1)
---------------------------
Sending ReadID command...
Answer received of 00000039 bytes read
e0 00 36 01 01 6e 61 6d 63 6f 20 6c 74 64 2e 3b 46 43 42 3b 56 65 72 31 2e 30 32 3b 4a 50 4e 2c 54 6f 75 63 68 50 61 6e
65 6c 26 4d 75 6c 74 69 70 75 72 70 6f 73 65 00 88
in ASCII -> "namco ltd.;FCB;Ver1.02;JPN,TouchPanel&Multipurpose"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 13 19
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 30 36
Sending getfeatures_code command...
Answer received of 00000023 bytes read
e0 00 20 01 01 01 01 10 00 02 02 00 00 03 07 0a 00 04 02 00 00 06 10 10 01 12 06 00 00 13 02 00 00 00 a6

NAMCO FCA2B PCB (FCAF1) AND FCA PCB (FCAF11)
---------------------------
Sending ReadID command...
Answer received of 00000041 bytes read
e0 00 3e 01 01 6e 61 6d 63 6f 20 6c 74 64 2e 3b 46 43 41 2d
31 3b 56 65 72 31 2e 30 31 3b 4a 50 4e 2c 4d 75 6c 74 69 70
75 72 70 6f 73 65 20 2b 20 52 6f 74 61 72 79 20 45 6e 63 6f
64 65 72 00 9f
in ASCII -> "namco ltd.;FCA-1;Ver1.01;JPN,Multipurpose + Rotary Encoder"
Sending formatversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 11 17
Sending jvsversion_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 20 26
Sending commver_code command...
Answer received of 00000007 bytes read
e0 00 04 01 01 10 16
Sending getfeatures_code command...
Answer received of 0000001f bytes read
e0 00 1c 01 01 01 01 10 00 02 02 00 00 03 07 00 00 04 02 00 00 12 06 00 00 13 04 00 00 00 73