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author Derrick Renaud <derrickr@mamedev.org>2009-10-03 13:22:38 +0000
committer Derrick Renaud <derrickr@mamedev.org>2009-10-03 13:22:38 +0000
commitabd2ff050631ff13f5830f58aafd544c5270b3b7 (patch)
treeddfdef3782fb3c019c1119fde1c6f29d61190573 /src/emu
parentdffbe9eff3fc293b527b83205e437c8fee2ec041 (diff)
Oops, fixed bad commit.
Diffstat (limited to 'src/emu')
-rw-r--r--src/emu/sound/discrete.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/src/emu/sound/discrete.h b/src/emu/sound/discrete.h
index 4ce2dbc6f82..29c88358192 100644
--- a/src/emu/sound/discrete.h
+++ b/src/emu/sound/discrete.h
@@ -840,6 +840,36 @@
*
* EXAMPLES: see Polaris, Amazing Maze
*
+ * --------------------------------------------------
+ *
+ * DISC_OP_AMP_OSCILLATOR_2 | DISC_OP_AMP_IS_NORTON
+ * Basic Norton Op Amp Oscillator circuit.
+ *
+ * .-------------------------------------------> DISC_OP_AMP_OSCILLATOR_OUT_CAP
+ * |
+ * | r1
+ * +------ZZZZ-----.
+ * | |
+ * | |\ |
+ * | r2 | \ |
+ * +---ZZZZ--|- \ |
+ * | | >-+-------> DISC_OP_AMP_OSCILLATOR_OUT_SQW
+ * --- |+ / |
+ * --- .---| / |
+ * | | |/ |
+ * gnd | |
+ * | r3 |
+ * +--ZZZZ---'
+ * |
+ * Z
+ * Z r4
+ * Z
+ * |
+ * ^
+ * vP
+ *
+ * EXAMPLES: see Space Walk
+ *
***********************************************************************
*
* DISCRETE_OP_AMP_VCOn - Various single power supply op-amp VCO circuits