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author Roberto Fresca <robertof@mamedev.org>2014-05-13 20:40:02 +0000
committer Roberto Fresca <robertof@mamedev.org>2014-05-13 20:40:02 +0000
commit66d9abd7c6d0414ba133738d24218bcd5612e7d2 (patch)
tree9ffe55cbd514f5cbb39853b32737dfbe9bdd1f5b /src/mame
parente356264186d27a3841e972ca0afdd14ff30d25e1 (diff)
Coco Loco: Added AY-3-8910 channels discrete circuitry ASCII layout.
Diffstat (limited to 'src/mame')
-rw-r--r--src/mame/drivers/cocoloco.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/mame/drivers/cocoloco.c b/src/mame/drivers/cocoloco.c
index ab2a16d024f..99a3781e1d5 100644
--- a/src/mame/drivers/cocoloco.c
+++ b/src/mame/drivers/cocoloco.c
@@ -29,6 +29,37 @@
*******************************************************************************
+ AY-3-8910 channels discrete circuitry
+ -------------------------------------
+
+ +12v + --. EC
+ | .----| |----.
+ .------. R 4K7 | | --' |
+ | 03|---/\/\/\/--. +---+ 470uf 25v +----.
+ | | R 4K7 | | | | |
+ | 04|---/\/\/\/--+----. | '----| |----' -+-
+ | | R 4K7 | | EC | 0.1 uf GND
+ | 38|---/\/\/\/--' Z 10uf 16v |\|5 EC
+ | | Z 5K .-- 1| \ 100uf 25v
+ | AY-3 | Z <---------| |--------------| \LM383T + --.
+ | 8910 | Z POT '-- + | >-----+------| |-----------> SPKR (edge pin 22)
+ | | Z .-----| / 4 | --'
+ | | | + --. | 2| / Z R .----> SPKR (edge pin 21)
+ | | -+- .----| |--' |/|3 Z 220 |
+ | | GND | --' | Z -+-
+ | | | 470uf 25v -+- | GND
+ | | | EC GND | .--| |---.
+ '------' | | | 0.1 uf |
+ +-------------------------+---+ +----.
+ | | 0.1 uf | |
+ | R 2.2 '--| |---' -+-
+ '--/\/\/\/--. GND
+ |
+ -+-
+ GND
+
+*******************************************************************************
+
*** Memory Map ***
$0000 - $00FF RAM ; Zero Page (pointers and registers)