Changeset 1efc42c in buchla-emu for emu/fdd.c

Timestamp:

07/30/2017 06:18:21 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

c5b6c90

Parents:

caff491

Message:

Load floppy disk image file.

File:

• emu/fdd.c (modified) (1 diff)

emu/fdd.c

@@ -24 +24 @@
 int32_t fdd_verbose = 0;
 
+#define N_CYL 80
+#define N_SID 2
+#define N_SEC 18
+#define SZ_SEC 512
+
+#define SZ_DISK (N_CYL * N_SID * N_SEC * SZ_SEC)
+
+static uint8_t image[SZ_DISK];
+
 void fdd_init(void)
 {
         ver("fdd init");
+        inf("loading disk image file %s", disk);
+
+        SDL_RWops *ops = SDL_RWFromFile(disk, "rb");
+
+        if (ops == NULL) {
+                fail("error while opening disk image file %s", disk);
+        }
+
+        size_t loaded = 0;
+
+        while (loaded < SZ_DISK) {
+                size_t n_rd = SDL_RWread(ops, image + loaded, 1, SZ_DISK - loaded);
+
+                if (n_rd == 0) {
+                        fail("error while reading disk image file %s", disk);
+                }
+
+                loaded += n_rd;
+        }
+
+        SDL_RWclose(ops);
 }