JVS-PAC operation


To control MAME and frontends you can use "shift-keys". It works by putting the JVS-PAC in shift-mode by holding down player 1 start, and then enter a secondary input.

"Shift key" sequences

Player 1 start + Action
player 2 start ESC
player 1 left Enter
player 1 right Tab - enter MAME menu
player 1 up ~ - volume adjustmests++ in MAME
player 1 down p - pause MAME
player 1 button 1 5 - increase credit
player 1 button 2 INS-speed up MAME
player 1 button 3 F2 - MAME test key
player 1 button 5 switch to default keyboard mapping
player 1 button 6 switch to MVS keyboard mapping (see below)

Default Keyboard mapping

Cabinet Input Keyboard mapping
Cabinet related
credit increase slot 1 5
credit increase slot 2 6
player 1 serivce button 9
player 2 serivce button 0
test button F2
Player 1 controls
player 1 start 1*
player 1 left cursor left
player 1 right cursor right
player 1 up cursor up
player 1 down cursor down
player 1 button 1 left CTRL
player 1 button 2 left ALT
player 1 button 3 space
player 1 button 4 left SHIFT
player 1 button 5 z
player 1 button 6 x
player 1 button 7 c **
player 1 button 8 v **
Player 2 controls
player 2 start 2
player 2 left d
player 2 right g
player 2 up r
player 2 down f
player 2 button 1 a
player 2 button 2 s
player 2 button 3 q
player 2 button 4 w
player 2 button 5 i
player 2 button 6 k
player 2 button 7 j**
player 2 button 8 l**
*) it issues "1" after you release the button.
**) Depends on I/O board capabilities

MVS layout

This is a special mapping some people like to use when playing SNK Neo-Geo games on control panels with 6 button Japanse layout. Numbers in figure indicate button number. Shift keys are always the same, regardless of layout.
mvs layout

page was last modified: December 02 2015 07:53 CET