Makes number of "find-first-areas" configurable.

1 files changed, 8 insertions, 7 deletions

diff --git a/src/dos.c b/src/dos.c
index ee06d63..06a47fe 100644
--- a/src/dos.c
+++ b/src/dos.c
@@ -488,29 +488,30 @@ static void int21_43(void)
 // Each DTA (Data Transfer Area) in memory can hold a find-first data
 // block. We simply encode our pointer in this area and use this struct
 // to hold the values.
+#define NUM_FIND_FIRST_DTA      64
 static struct find_first_dta {
     // List of files to return and pointer to current.
     struct dos_file_list *find_first_list;
     struct dos_file_list *find_first_ptr;
     // Address of DTA in dos memory - 0 is unused
     unsigned dta_addr;
-} find_first_dta[32];
+} find_first_dta[NUM_FIND_FIRST_DTA];
 
 // Search the list an returns the position
 static struct find_first_dta *get_find_first_dta(void)
 {
     int i;
-    for(i = 0; i < 32; i++)
+    for(i = 0; i < NUM_FIND_FIRST_DTA; i++)
         if(find_first_dta[i].dta_addr == dosDTA)
             break;
-    if(i == 32)
+    if(i == NUM_FIND_FIRST_DTA)
     {
-        for(i = 0; i < 32; i++)
+        for(i = 0; i < NUM_FIND_FIRST_DTA; i++)
             if(!find_first_dta[i].dta_addr)
                 break;
-        if(i == 32)
+        if(i == NUM_FIND_FIRST_DTA)
         {
-            print_error("Too many find-first DTA areas opened");
+            print_error("Too many find-first DTA areas opened\n");
             i = 0;
         }
         find_first_dta[i].dta_addr = dosDTA;
@@ -524,7 +525,7 @@ static struct find_first_dta *get_find_first_dta(void)
 static void clear_find_first_dta(struct find_first_dta *p)
 {
     unsigned x = find_first_dta - p;
-    if(x >= 32)
+    if(x >= NUM_FIND_FIRST_DTA)
         return;
     p->dta_addr = 0;
     p->find_first_ptr = 0;