1 files changed, 28 insertions, 0 deletions
diff --git a/src/h/header.h b/src/h/header.h
new file mode 100644
index 0000000..3b131f1
--- /dev/null
+++ b/src/h/header.h
@@ -0,0 +1,28 @@
+/*
+ * Interpreter code file header - this is written at the start of
+ *  an icode file after the start-up program.
+ */
+struct header {
+   word hsize;			/* size of interpreter code */
+   word trace;			/* initial value of &trace */
+
+   word Records;
+   word Ftab;			/* location of record/field table */
+   word Fnames;			/* location of names of fields */
+   word Globals;		/* location of global variables */
+   word Gnames;			/* location of names of globals */
+   word Statics;		/* location of static variables */
+   word Strcons;		/* location of identifier table */
+   word Filenms;		/* location of ipc/file name table */
+
+   #ifdef FieldTableCompression
+      short FtabWidth;		/* width of field table entries, 1 | 2 | 4 */
+      short FoffWidth;		/* width of field offset entries, 1 | 2 | 4 */
+      word Nfields;		/* number of field names */
+      word Fo;			/* The start of the Fo array */
+      word Bm;			/* The start of the Bm array */
+   #endif				/* FieldTableCompression */
+
+   word linenums;		/* location of ipc/line number table */
+   word config[16];		/* icode version */
+   };