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-rw-r--r--src/mame/nec/pc98_kbd.cpp14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mame/nec/pc98_kbd.cpp b/src/mame/nec/pc98_kbd.cpp
index 36b0ef7b35f..237100283cb 100644
--- a/src/mame/nec/pc98_kbd.cpp
+++ b/src/mame/nec/pc98_kbd.cpp
@@ -22,6 +22,20 @@ TODO:
STOP is correct, verified with branmar2
- Problems with natural keyboard (most nonprinting keys don't work);
+===================================================================================================
+
+Keyboard TX commands:
+0xfa ACK
+0xfc NACK
+0x95
+---- --xx extension key settings (00 normal 11 Win and App Keys enabled)
+0x96 identification codes
+0x9c
+-xx- ---- key delay (11 = 1000 ms, 10 = 500 ms, 01 = 500 ms, 00 = 250 ms)
+---x xxxx repeat rate (slow 11111 -> 00001 fast)
+0x9d keyboard LED settings
+0x9f keyboard ID
+
**************************************************************************************************/
#include "emu.h"