Add boot function; modify main to use apple2 boot

include/apple2.h

@@ -2,6 +2,7 @@
 #define _APPLE2_H_
 
 #include "mos6502.h"
+#include "apple2.dd.h"
 
 typedef struct {
     /*
@@ -15,6 +16,12 @@ typedef struct {
      * delete function to do that.
      */
     vm_segment *memory;
+
+    /*
+     * Our two disk drives.
+     */
+    apple2dd *drive1;
+    apple2dd *drive2;
 } apple2;
 
 extern apple2 *apple2_create();
@@ -22,5 +29,6 @@ extern void apple2_free(apple2 *);
 extern void apple2_press_key(apple2 *, vm_8bit);
 extern void apple2_clear_strobe(apple2 *);
 extern void apple2_release_key(apple2 *);
+extern int apple2_boot(apple2 *);
 
 #endif

src/apple2.c

@@ -6,6 +6,7 @@
  */
 
 #include "apple2.h"
+#include "option.h"
 #include "vm_segment.h"
 
 /*
@@ -35,7 +36,10 @@ apple2_create()
 
     mach->cpu = mos6502_create();
     mach->memory = mach->cpu->memory;
-    
+
+    mach->drive1 = apple2dd_create();
+    mach->drive2 = apple2dd_create();
+
     return mach;
 }
 
@@ -96,3 +100,31 @@ apple2_release_key(apple2 *mach)
 {
     vm_segment_set(mach->memory, ANY_KEY_DOWN, 0);
 }
+
+int
+apple2_boot(apple2 *mach)
+{
+    FILE *stream;
+    int err;
+
+    // Do we have any disks?
+    stream = option_get_input(1);
+    if (stream) {
+        err = apple2dd_insert(mach->drive1, stream);
+        if (err != OK) {
+            log_critical("Unable to insert disk1 into drive");
+            return err;
+        }
+    }
+
+    stream = option_get_input(2);
+    if (stream) {
+        err = apple2dd_insert(mach->drive2, stream);
+        if (err != OK) {
+            log_critical("Unable to insert disk2 into drive");
+            return err;
+        }
+    }
+
+    return OK;
+}

src/main.c

@@ -11,6 +11,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "apple2.h"
 #include "log.h"
 #include "option.h"
 
@@ -69,6 +70,9 @@ finish()
 int
 main(int argc, char **argv)
 {
+    apple2 *mach;
+    int err;
+
     init(argc, argv);
 
     // When we exit, we want to wrap up a few loose ends. This syscall
@@ -76,6 +80,14 @@ main(int argc, char **argv)
     // successfully or if we run `exit()` from elsewhere in the program.
     atexit(finish);
 
+    mach = apple2_create();
+    err = apple2_boot(mach);
+
+    if (err != OK) {
+        fprintf(stderr, "Bootup failed!\n");
+        exit(1);
+    }
+
     // ha ha ha ha #nervous #laughter
     printf("Hello, world\n");
 }

tests/apple2.c

@@ -1,6 +1,7 @@
 #include <criterion/criterion.h>
 
 #include "apple2.h"
+#include "option.h"
 
 static apple2 *mach;
 
@@ -22,6 +23,9 @@ Test(apple2, create)
 {
     cr_assert_neq(mach, NULL);
     cr_assert_neq(mach->cpu, NULL);
+
+    cr_assert_neq(mach->drive1, NULL);
+    cr_assert_neq(mach->drive2, NULL);
 }
 
 Test(apple2, press_key)
@@ -46,3 +50,18 @@ Test(apple2, release_key)
     apple2_release_key(mach);
     cr_assert_eq(vm_segment_get(mach->memory, 0xC010), 0);
 }
+
+Test(apple2, boot)
+{
+    // A boot without any disks is technically ok... in full emulation,
+    // you'd just see a screen that prints out something like "Apple
+    // ][e" at the bottom.
+    cr_assert_eq(apple2_boot(mach), OK);
+
+    // And, as you may guess, it's ok to reboot the machine.
+    option_read_file(1, "../data/zero.img");
+    cr_assert_eq(apple2_boot(mach), OK);
+
+    option_read_file(2, "../data/bad.img");
+    cr_assert_neq(apple2_boot(mach), OK);
+}