From 9520558af1383f95147907cb648e5084d6c8141e Mon Sep 17 00:00:00 2001 From: RobertoFresca Date: Sun, 29 May 2016 16:29:44 -0300 Subject: [PATCH] Tetris + Cherry Master (+K, Canada Version, encrypted) hidden switch documentation... [Ioannis Bampoulas] --- src/mame/drivers/goldstar.cpp | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/src/mame/drivers/goldstar.cpp b/src/mame/drivers/goldstar.cpp index d414e9c44d3..e04c62e7e7b 100644 --- a/src/mame/drivers/goldstar.cpp +++ b/src/mame/drivers/goldstar.cpp @@ -13961,11 +13961,20 @@ ROM_END Probably tracing pin connections to the HX881 will confirm it. - You can switch the games pulsing their respective hidden buttons. - Hidden Switch: - Unknown, yet... + You can enter Cherry Master mode in same way like other Tetris versions. + + One wire goes to edge connector 35 + 36 (solder side), putting PPI (u34) + pin 14 (PC0) to GND (needed to get the switch working). + + One button adds GND to the edge connector 8 (solder side): + PPI pin 18 (PB0), to switch to Tetris game. + + The other button, adds GND to the edge connector 7 (solder side): + PPI pin 19 (PB1), to switch to Cherry Master game. + + Need proper implementation. */ ROM_START( cmtetrsb )