1 files changed, 32 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/SNIP/memavail.c b/reference/C/CONTRIB/SNIP/memavail.c
new file mode 100755
index 0000000..67400d9
--- /dev/null
+++ b/reference/C/CONTRIB/SNIP/memavail.c
@@ -0,0 +1,32 @@
+/*
+**  MEMAVAIL.C - Report available DOS memory
+**
+**  public domain by Thor Johnson
+*/
+
+#include <dos.h>
+
+long memavail(void)
+{
+      union REGS regs;
+
+      /* Request impossibly large number of 16-byte paragraphs from DOS */
+
+      regs.h.ah = 0x48;
+      regs.x.bx = 0xFFFF;
+
+      int86(0x21,&regs,&regs);
+
+      return((long)regs.x.bx * 16L);
+}
+
+#ifdef TEST
+
+#include <stdio.h>
+
+main()
+{
+      printf("Available DOS memory = %ld bytes\n", memavail());
+}
+
+#endif /* TEST */