Changeset c5b6c90 in buchla-emu for emu/mkdisk.c

Timestamp:

07/31/2017 05:01:38 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

1489228

Parents:

1efc42c

git-author:

Thomas Lopatic <thomas@…> (07/31/2017 05:01:32 PM)

git-committer:

Thomas Lopatic <thomas@…> (07/31/2017 05:01:38 PM)

Message:

Successfully loaded midas.abs from disk.

File:

• emu/mkdisk.c (modified) (3 diffs)

emu/mkdisk.c

@@ -30 +30 @@
 #define N_CYL 80
 #define N_SID 2
-#define N_SEC 18
+#define N_SEC 9
 #define SZ_SEC 512
 
-#define N_SEC_CLU 1
+#define N_SEC_CLU 2
+#define SZ_CLU (SZ_SEC * N_SEC_CLU)
 
 #define N_BOOT_SEC 1
-#define N_FAT_SEC 9
-#define N_ROOT_SEC 14
+#define N_FAT_SEC 3
+#define N_ROOT_SEC 7
 
 #define N_FAT 2
@@ -142 +143 @@
         off = put_sec_16(0, off, N_CYL * N_SID * N_SEC);
 
-        // media descriptor (floppy disk, 1.44M)
-        off = put_sec_8(0, off, 0xf0);
+        // media descriptor (floppy disk, 720k)
+        off = put_sec_8(0, off, 0xf9);
 
         // sectors per FAT (9 * 512 / 3 * 2 = 3072)
@@ -165 +166 @@
         int32_t ent = 0;
 
-        ent = put_fat_12(sec, ent, 0xff0);
+        ent = put_fat_12(sec, ent, 0xff9);
         ent = put_fat_12(sec, ent, 0xfff);
 
-        int32_t n_sec = (sz_midas + SZ_SEC - 1) / SZ_SEC;
-
-        for (int32_t i = 0; i < n_sec - 1; ++i) {
+        int32_t n_clu = (sz_midas + SZ_CLU - 1) / SZ_CLU;
+
+        for (int32_t i = 0; i < n_clu - 1; ++i) {
                 ent = put_fat_12(sec, ent, ent + 1);
         }