X-Git-Url: http://git.subgeniuskitty.com/screensavers/.git/blobdiff_plain/503470d7ddb5b5a0a42987abbb14b90c5eb705d9..d107bd59821b2e293311b22a96120dca018793a9:/hacks/NEDsim/NEDsim.c

diff --git a/hacks/NEDsim/NEDsim.c b/hacks/NEDsim/NEDsim.c
index 2b576f0..6778c2d 100644
--- a/hacks/NEDsim/NEDsim.c
+++ b/hacks/NEDsim/NEDsim.c
@@ -1,24 +1,9 @@
 /* (c) 2021 Aaron Taylor <ataylor at subgeniuskitty dot com>                  */
 /* See LICENSE.txt file for copyright and license details.                    */
 
-// TODO:
-//      - Write a brief description of the machine being simulated. Only one thread, reduced RAM, no meaningful console when running as screensaver, etc.
-
-// CLI Flags:
-//      -path-to-aout-binary
-//      -path-to-font-file
-//      -speed
-
-// Ideas for sample programs to include:
-//      - Build list of integers on the stack (DUP, IM_1, ADD).
-//      - Calculate prime numbers, placing them on the stack.
-//      - Lights sliding back and forth, like PDP-11 front panel with some OSes.
-
 #include "screenhack.h"
 #include "simulator.h"
 
-/* Keep this source code C89 compliant per XScreensaver's instructions.       */
-
 /* -------------------------------------------------------------------------- */
 /* Data Structures                                                            */
 /* -------------------------------------------------------------------------- */
@@ -74,25 +59,6 @@ struct color_scheme {
         text;
 };
 
-//static struct color_scheme color_list[] = {
-//    // TODO: Explain all this.
-//    // TODO: Add other color schemes, like purple PDP-11/70.
-//    // TODO: http://www.chdickman.com/pdp8/DECcolors/
-//    {
-//        {63479,63479,63479}, // 092-XXXX-123
-//        { 5140, 2056, 5654}, // 092-XXXX-152
-//        {40092,11051,15677}, // 092-XXXX-139
-//        {30326,13107,12850}, // 092-XXXX-154
-//        {65535,13107,12850}, // homemade
-//        {30326,13107,12850}, // 092-XXXX-154
-//        { 4112,12850,20046}, // 092-XXXX-145
-//        {12336,29555,37008}, // 092-XXXX-151
-//        {30326,24158, 6425}, // 092-XXXX-157
-//        {63479,63479,63479}, // 092-XXXX-123
-//        {63479,63479,63479}  // 092-XXXX-123
-//    }
-//};
-
 static struct color_scheme color_list[] = {
     // TODO: Explain all this.
     // TODO: Add other color schemes, like purple PDP-11/70.
@@ -677,8 +643,16 @@ NEDsim_event(Display * dpy, Window win, void * closure, XEvent * event)
 static void
 NEDsim_free(Display * dpy, Window win, void * closure)
 {
-    // TODO: Replace all this with proper code to free everything.
     struct NEDsim * nedsim = closure;
+
+    if (nedsim->nedstate != NULL) {
+        free(nedsim->nedstate->active_thread->psw);
+        free(nedsim->nedstate->active_thread);
+        free(nedsim->nedstate->hack);
+        free(nedsim->nedstate);
+    }
+
+    // TODO: Replace all this with proper code to free everything related to the screensaver itself.
     XFreeGC(nedsim->dpy, nedsim->gc);
     free(nedsim);
 }
@@ -707,8 +681,15 @@ NEDsim_init(Display * dpy, Window win)
     nedsim->delay = get_integer_resource(nedsim->dpy, "delay", "Integer");
     nedsim->delay *= 1000; /* Turn milliseconds into microseconds. */
 
-    // TODO: Read in the a.out file. This should be done in the simulator's init function call?
-    nedsim->nedstate = init_simulator();
+    // Load the program file specified by the user or, if none is specified,
+    // randomly select one of the included programs.
+    char * input_file = get_string_resource(nedsim->dpy, "binary", "String");
+    if (input_file == NULL) {
+        // TODO: Need to include some default programs and randomly select one to load into RAM.
+        nedsim->nedstate = init_simulator("./test.out");
+    } else {
+        nedsim->nedstate = init_simulator(input_file);
+    }
 
     nedsim->gc = XCreateGC(nedsim->dpy, nedsim->win, GCForeground, &gcv);
 
@@ -797,6 +778,7 @@ static const char * NEDsim_defaults[] = {
 
 static XrmOptionDescRec NEDsim_options[] = {
     { "-delay",              ".delay",                  XrmoptionSepArg, 0      },
+    { "-binary",             ".binary",                 XrmoptionSepArg, 0      },
     { 0, 0, 0, 0 }
 };