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diff --git a/amforth-6.5/common/lib/hardware/i2c-value.frt b/amforth-6.5/common/lib/hardware/i2c-value.frt
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index 0000000..7638be6
--- /dev/null
+++ b/amforth-6.5/common/lib/hardware/i2c-value.frt
@@ -0,0 +1,23 @@
+\
+\ an I2C value
+\
+
+#require values.frt
+#require quotations.frt
+#require i2c.frt
+
+\ initial hwid ...
+\ 17 $3D i2c.cvalue "name"
+: i2c.cvalue ( n addr hwid -- )
+ (value)
+ dup , \ store the hwid
+ [: dup @i ( hwid) i2c.c@ ;] ,
+ [: dup @i ( hwid) i2c.c! ;] ,
+ i2c.c! \ store inital data
+;
+
+\ use case: port extender
+\ $ff $3d i2c.cvalue keys
+\ $00 to keys ( turn all off )
+\ keys $01 and if ( if key 1 is pressed )
+\