diff --git a/AppleIISd.bin b/AppleIISd.bin
index 7fd6750..dfb6e64 100644
Binary files a/AppleIISd.bin and b/AppleIISd.bin differ
diff --git a/AppleIISd.hex b/AppleIISd.hex
index 6a00ac3..912b571 100644
--- a/AppleIISd.hex
+++ b/AppleIISd.hex
@@ -1,72 +1,72 @@
 :10000000A220A200A203A23C0878A960853D203D61
 :1000100000BABD00018DF807290F28853D0A0A0A9C
-:100020000A852BAA2CFFCFA000B9DECAF0080980F0
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+:100020000A852BAA2CFFCFA000B916C9F0080980B9
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 :10004000ADF8073A854164406C40002000C8A90122
 :100050008542A62B8643A9088545644464476446C7
-:100060002CFFCF2004CAA9018542A62B8643A90AEA
-:10007000854564446447A90185462CFFCF2004CA06
+:100060002CFFCF2070CAA9018542A62B8643A90A7E
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 :10008000A62B4C0108D848A52B48A53D48A54048BB
 :10009000A541480878A960853D203D00BABD000112
 :1000A0008DF807290F28853D0A0A0A0A852BAA2CF4
-:1000B000FFCF20DEC99004A92F802CA9803C83C0EB
+:1000B000FFCF204ACA9004A92F802CA9803C83C07E
 :1000C000F020A542F00DC901F00EC902F00FA90100
-:1000D00038801420F6C9800F2004CA800A206DCA17
+:1000D0003880142062CA800F2070CA800A20D9CAD2
 :1000E00080052000C890DBBA9D05016885416885C0
-:1000F0004068853D68852B6860000000FFFF97859C
+:1000F0004068853D68852B6860000000FFFFB7857C
 :10010000A9039D81C0BD83C009019D83C0A9079D2E
 :1001100082C0A00AA9FF9D80C03C81C010FB88D08E
-:10012000F5BD83C029FE9D83C0A9058540A9CB8567
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+:10016000C92081C9A9618540A9C98541206DC920DF
+:1001700081C9C901F0E0C900D026A95B8540A9C9A1
+:100180008541206DC9209AC9C900D014A43DB97811
 :10019000042940F048BD83C009109D83C04CEFC8BE
-:1001A0004C04C9A91D8540A9CB85412016C9A92F9A
-:1001B0008540A9CB85412016C9202AC9C901F0E391
-:1001C000C900D0034CDDC8A90B8540A9CB854120CF
-:1001D00016C9202AC9C901F0F6C900D027A9178578
-:1001E00040A9CB85412016C9202AC9C900D015BD18
+:1001A0004C04C9A9558540A9C98541206DC9A967D5
+:1001B0008540A9C98541206DC92081C9C901F0E3E5
+:1001C000C900D0034CDDC8A9438540A9C985412099
+:1001D0006DC92081C9C901F0F6C900D027A94F8592
+:1001E00040A9C98541206DC92081C9C900D015BD6C
 :1001F00083C009809D83C0BD81C009049D81C01852
 :10020000A000900338A027BD83C009019D83C0A929
-:10021000009D82C098605AA000B1409D80C03C8182
-:10022000C010FBC8C00690F17A60A9FF9D80C03C59
-:1002300081C010FBBD80C08980D0EF48A9FF9D80A0
-:10024000C06860202AC9485AA0044C52C9A9FF9D21
-:1002500080C03C81C010FBBD80C04888D0EFA43D69
-:100260006899F805689978056899F8046899780498
-:100270007AA9FF9D80C06860DA5A8AA8A63DA54683
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-:1002E000403C83C018F00138686048A9203C83C0B6
-:1002F00018F001386860A90020EAC99002A92BA271
-:10030000FFA0FF602078C9BD83C029FE9D83C0A9DE
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-:10033000C0A000BD80C09144C8D0F8E645BD80C0D3
-:100340009144C8D0F8C645BD80C0BD80C0BD80C046
-:10035000BD81C029EF9D81C018A9000848BD83C098
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-:1003B000C0BD80C0291FC905D01A18A9000848A9C6
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-:1004400000000000000000000000000000000000AC
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+:1003B000F8C645BD80C0BD80C0BD80C0BD81C0291C
+:1003C000EF9D81C018A9000848BD83C009019D8325
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 :10045000000000000000000000000000000000009C
 :10046000000000000000000000000000000000008C
 :10047000000000000000000000000000000000007C
diff --git a/src/AppleIISd.s b/src/AppleIISd.s
index 9e3c3a2..72c4512 100644
--- a/src/AppleIISd.s
+++ b/src/AppleIISd.s
@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.1
+; Version 1.2
 ; Main source
 ;
 ; (c) Florian Reitz, 2017
@@ -29,14 +29,14 @@
 ; 65535 blocks 
 ; Removable media 
 ; Non-interruptable 
-; 2 drives 
+; 4 drives 
 ; Read, write and status allowed 
 ; 
 ;******************************* 
 
             .segment "SLOTID"
             .dbyt  $FFFF      ; 65535 blocks
-            .byt   $97        ; Status bits
+            .byt   $B7        ; Status bits
             .byt   <DRIVER    ; LSB of driver
 
 
@@ -365,7 +365,7 @@ INIT:       LDA   #$03        ; set SPI mode 3
             RTS
 
 
-TEXT:       .asciiz "  Apple][Sd v1.1 (c)2017 Florian Reitz"
+TEXT:       .asciiz "  Apple][Sd v1.2 (c)2017 Florian Reitz"
 
 CMD0:       .byt $40, $00, $00
             .byt $00, $00, $95
diff --git a/src/Helper.s b/src/Helper.s
index 4f7061c..eb537ab 100644
--- a/src/Helper.s
+++ b/src/Helper.s
@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.1
+; Version 1.2
 ; Helper functions
 ;
 ; (c) Florian Reitz, 2017
@@ -118,16 +118,29 @@ GETBLOCK:   PHX               ; save X
             STA   R33,X       ; in R30-R33
             LDA   BLOCK+1
             STA   R32,X
-            LDA   #0
-            STA   R31,X
-            STA   R30,X
+            STZ   R31,X
+            STZ   R30,X
 
             LDA   #$80        ; drive number
             AND   $43
-            BEQ   @SDHC       ; D1
+            BEQ   @SLOT       ; D1
             LDA   #1          ; D2
             STA   R31,X
 
+@SLOT:      LDA   SLOT
+            PHA               ; save SLOT
+            LDA   #$70        ; slot number * 16
+            AND   $43
+            STA   SLOT
+            CPY   SLOT
+            BEQ   @RESTORE    ; slot number = real slot?
+            LDA   R31,X       ; is phantom slot
+            INC   A
+            STA   R31,X
+
+@RESTORE:   PLA               ; restore SLOT
+            STA   SLOT
+
 @SDHC:      LDA   #SDHC
             AND   SS,Y        ; if card is SDHC,
             BNE   @END        ; use block addressing
diff --git a/src/ProDOS.s b/src/ProDOS.s
index 44f68ed..e85bfd4 100644
--- a/src/ProDOS.s
+++ b/src/ProDOS.s
@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.1
+; Version 1.2
 ; ProDOS functions
 ;
 ; (c) Florian Reitz, 2017