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Diffstat (limited to 'src/mame/audio/pinsnd88.cpp')
-rw-r--r--src/mame/audio/pinsnd88.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mame/audio/pinsnd88.cpp b/src/mame/audio/pinsnd88.cpp
index 796174a8548..ebd7b0d9a98 100644
--- a/src/mame/audio/pinsnd88.cpp
+++ b/src/mame/audio/pinsnd88.cpp
@@ -127,7 +127,7 @@ pinsnd88_device::pinsnd88_device(const machine_config &mconfig, const char *tag,
0 0 0 * * * * * * * * * * * * * RW - 0x0000 - SRAM @U7
0 0 1 0 0 0 x x x x x x x x x * RW - 0x2000 - YM2151 @U16
0 0 1 0 0 1 x x x x x x x x x x x - 0x2400 - open bus (hypothesis: leftover from cvsd_clock_set_w circuit)
-0 0 1 0 1 0 x x x x x x x x x x W[1]- 0x2800 - ANALOG SWITCH, input sound and output stereo control; on NARC, latch to respond to main pcb
+0 0 1 0 1 0 x x x x x x x x x x W[1]- 0x2800 - ANALOG SWITCH, goes to active low inputs of an ADG201 quad analog switch; on NARC, latch to respond to main pcb
0 0 1 0 1 1 x x x x x x x x x x x - 0x2C00 - open bus (hypothesis: leftover from cvsd_digit_clock_clear_w circuit; on NARC, secondary command_w)
0 0 1 1 0 0 x x x x x x x x x x W - 0x3000 - 7224 DAC write
0 0 1 1 0 1 x x x x x x x x x x R[2]- 0x3400 - Latch Read and de-assert MC68B09E /IRQ