diff --git a/Adafruit_BusIO_Register.cpp b/Adafruit_BusIO_Register.cpp
index 33d98bd..127bf5a 100644
--- a/Adafruit_BusIO_Register.cpp
+++ b/Adafruit_BusIO_Register.cpp
@@ -104,6 +104,9 @@ bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
     if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
       addrbuffer[0] &= ~0x80;
     }
+    if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
+      addrbuffer[0] |= 0x80;
+    }
     if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
       addrbuffer[0] &= ~0x80;
       addrbuffer[0] |= 0x40;
@@ -181,6 +184,9 @@ bool Adafruit_BusIO_Register::read(uint8_t *buffer, uint8_t len) {
     if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
       addrbuffer[0] |= 0x80;
     }
+    if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
+      addrbuffer[0] &= ~0x80;
+    }
     if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
       addrbuffer[0] |= 0x80 | 0x40;
     }
diff --git a/Adafruit_BusIO_Register.h b/Adafruit_BusIO_Register.h
index 72ac780..c76944b 100644
--- a/Adafruit_BusIO_Register.h
+++ b/Adafruit_BusIO_Register.h
@@ -8,6 +8,7 @@
 typedef enum _Adafruit_BusIO_SPIRegType {
   ADDRBIT8_HIGH_TOREAD = 0,
   AD8_HIGH_TOREAD_AD7_HIGH_TOINC = 1,
+  ADDRBIT8_HIGH_TOWRITE = 2,
 } Adafruit_BusIO_SPIRegType;
 
 /*!