add syschdir

libsrc/telestrat/syschdir.s

@@ -0,0 +1,34 @@
+;
+; Jede (jede@oric.org), 2021-02-22
+;
+; unsigned char _syschdir (const char* name, ...);
+;
+
+        .export         __syschdir
+        .import         addysp, popax
+		.importzp       tmp1
+
+        .include        "telestrat.inc"
+        .include        "zeropage.inc"
+        
+
+__syschdir:
+        ; Throw away all parameters except the name
+        dey
+        dey
+        jsr     addysp
+
+        ; Get name
+        jsr     popax
+		
+		stx     tmp1
+        ldy     tmp1
+        
+        ; Call telemon primitive
+        
+        BRK_TELEMON(XPUTCWD)
+        
+        rts
+
+
+