diff --git a/asminc/stdio.inc b/asminc/stdio.inc
index 18a7541e0..3b22c47f6 100644
--- a/asminc/stdio.inc
+++ b/asminc/stdio.inc
@@ -47,6 +47,8 @@ FILENAME_MAX    = 64+1
 FILENAME_MAX    = 12+1
 .elseif .defined(__LUNIX__)
 FILENAME_MAX    = 80+1
+.elseif .defined(__TELESTRAT__)
+FILENAME_MAX    = 50+1
 .else
 FILENAME_MAX    = 16+1
 .endif
diff --git a/asminc/telestrat.inc b/asminc/telestrat.inc
index 8a51e1c32..8e6a66bbd 100644
--- a/asminc/telestrat.inc
+++ b/asminc/telestrat.inc
@@ -16,6 +16,7 @@ FUNCTKEY        = $A5
 FNAME_LEN       = 11            ; maximum length of file-name
 
 
+
 ; ---------------------------------------------------------------------------
 ; Zero page
 
@@ -26,6 +27,15 @@ RESB            := $02
 
 TR0             := $0C
 TR1             := $0D
+TR2             := $0E
+TR3             := $0F
+TR4             := $10
+TR5             := $11
+TR6             := $12
+TR7             := $13
+
+
+
 
 PTR_READ_DEST   := $2C           ; used for XFREAD and XWRITE only in telemon 3.0
 
@@ -109,6 +119,7 @@ XTEXT            = $19
 XHIRES           = $1A
 XFILLM           = $1C
 XMINMA           = $1F
+XVARS            = $24          ; only in TELEMON 3.0, in telemon 2.4, it's XNOMFI ($24)
 XFREAD           = $27          ; only in TELEMON 3.0
 XOPEN            = $30          ; only in TELEMON 3.0
 XCOSCR           = $34          ; switch off cursor
@@ -129,12 +140,18 @@ XINK             = $93
 XEXPLO           = $9C 
 XPING            = $9D
 
+; ---------------------------------------------------------------------------
+; ROM entries variables
+
+PWD_PTR          = $00
+
 ; ---------------------------------------------------------------------------
 ; Page $200
 SCRX             := $220
 SCRY             := $224
 ADSCRL           := $218
 ADSCRH           := $21C
+IRQVECTOR        := $2FA
 
 
 ; ---------------------------------------------------------------------------
@@ -146,8 +163,8 @@ BUFEDT           := $590
 MAX_BUFEDT_LENGTH=110
 
 ; Hardware
-CH376_DATA       :=$340
-CH376_COMMAND    :=$341
+CH376_DATA       := $340
+CH376_COMMAND    := $341
 
 ; MACRO 
 
diff --git a/cfg/telestrat.cfg b/cfg/telestrat.cfg
index 395a936e1..42e8d2cb5 100644
--- a/cfg/telestrat.cfg
+++ b/cfg/telestrat.cfg
@@ -4,7 +4,7 @@ SYMBOLS {
     __RAMEND__:    type = weak, value = $9800;
 }
 MEMORY {
-    ZP:      file = "", define = yes, start = $00E0,            size = $001A;
+    ZP:      file = "", define = yes, start = $00B0,            size = $003A;
     ORIXHDR: file = %O, type   = ro,  start = $0000,            size = $001F;
     BASHEAD: file = %O, define = yes, start = $0801,            size = $000D;
     MAIN:    file = %O, define = yes, start = __BASHEAD_LAST__, size = __RAMEND__ - __MAIN_START__;
diff --git a/include/stdio.h b/include/stdio.h
index c2c735cb0..a3facd513 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -75,6 +75,8 @@ extern FILE* stderr;
 #  define FILENAME_MAX  (12+1)
 #elif defined(__LUNIX__)
 #  define FILENAME_MAX  (80+1)
+#elif defined(__TELESTRAT__)
+#  define FILENAME_MAX  (50+1)
 #else
 #  define FILENAME_MAX  (16+1)
 #endif
diff --git a/libsrc/telestrat/initcwd.s b/libsrc/telestrat/initcwd.s
new file mode 100644
index 000000000..f359ebeb4
--- /dev/null
+++ b/libsrc/telestrat/initcwd.s
@@ -0,0 +1,31 @@
+;
+; Jede (jede@oric.org) 24.09.2017
+;
+
+        .export         initcwd
+        .import         __cwd
+
+        .include        "zeropage.inc"
+        .include        "telestrat.inc"
+
+
+initcwd:
+       
+        ldx     #PWD_PTR
+        BRK_TELEMON XVARS
+        
+        sta     ptr1
+        sty     ptr1+1
+        
+        ldy     #$00
+        
+loop:        
+        lda     (ptr1),y
+        beq     done
+        sta     __cwd,y
+        iny
+        bne     loop
+       
+done:   
+        sta     __cwd,y
+        rts