fix (#33): Added reset option and ROM swapping

Author: agg23

dist/Cores/agg23.SNES/core.json

@@ -7,8 +7,8 @@
       "description": "Super Nintendo and Super Famicom. Nintendo's second major home console",
       "author": "agg23",
       "url": "https://github.com/agg23/openfpga-snes",
-      "version": "0.2.0",
-      "date_release": "2022-09-19"
+      "version": "0.3.0",
+      "date_release": "2022-09-28"
     },
     "framework": {
       "target_product": "Analogue Pocket",

dist/Cores/agg23.SNES/data.json

@@ -6,7 +6,7 @@
         "name": "SMC",
         "id": 0,
         "required": true,
-        "parameters": "0x108",
+        "parameters": "0x109",
         "extensions": ["smc", "sfc"],
         "address": "0x10000000"
       },

dist/Cores/agg23.SNES/interact.json

@@ -2,6 +2,14 @@
   "interact": {
     "magic": "APF_VER_1",
     "variables": [
+      {
+        "name": "Reset core",
+        "id": 10,
+        "type": "action",
+        "enabled": true,
+        "address": "0x00000050",
+        "value": 1
+      },
       {
         "name": "Use Multitap",
         "id": 20,
@@ -16,42 +24,26 @@
       {
         "name": "Lightgun Options",
         "id": 30,
-        "type": "action",
-        "enabled": false
-      },
-      {
-        "name": "No Lightgun",
-        "id": 31,
-        "group": 3,
-        "type": "radio",
-        "enabled": true,
-        "address": "0x00000104",
-        "persist": true,
-        "writeonly": true,
-        "defaultval": 1,
-        "value": 0
-      },
-      {
-        "name": "Use Super Scope",
-        "id": 32,
-        "group": 3,
-        "type": "radio",
+        "type": "list",
         "enabled": true,
         "address": "0x00000104",
-        "writeonly": true,
         "persist": true,
-        "value": 1
-      },
-      {
-        "name": "Use Justifier",
-        "id": 33,
-        "group": 3,
-        "type": "radio",
-        "enabled": true,
-        "address": "0x00000104",
         "writeonly": true,
-        "persist": true,
-        "value": 3
+        "defaultval": 0,
+        "options": [
+          {
+            "name": "No Lightgun",
+            "value": 0
+          },
+          {
+            "name": "Use Super Scope",
+            "value": 1
+          },
+          {
+            "name": "Use Justifier",
+            "value": 2
+          }
+        ]
       },
       {
         "name": "D-Pad Aim Speed",

src/fpga/apf/build_id.mif

@@ -9,8 +9,8 @@ DATA_RADIX = HEX;
 CONTENT
 BEGIN
 
-   0E0 : 20220924;
-   0E1 : 00112758;
-   0E2 : 2ef70c64;
+   0E0 : 20220928;
+   0E1 : 00083938;
+   0E2 : 46a76eb8;
 
 END;

src/fpga/core/core_top.v

@@ -329,8 +329,15 @@ module core_top (
   end
 
   always @(posedge clk_74a) begin
+    if (reset_delay > 0) begin
+      reset_delay <= reset_delay - 1;
+    end
+
     if (bridge_wr) begin
       casex (bridge_addr)
+        32'h00000050: begin
+          reset_delay <= 32'h100000;
+        end
         32'h00000100: begin
           multitap_enabled <= bridge_wr_data[0];
         end
@@ -626,7 +633,7 @@ module core_top (
       cont4_key_s,
       clk_sys_21_48
   );
-  
+
   synch_3 #(
       .WIDTH(32)
   ) joy1_s (
@@ -638,17 +645,19 @@ module core_top (
   wire PAL;
 
   // Settings
-  reg  multitap_enabled;
-  reg  lightgun_enabled;
-  reg  lightgun_type;
+  reg multitap_enabled;
+  reg lightgun_enabled;
+  reg lightgun_type;
   reg [7:0] lightgun_dpad_aim_speed;
-  reg  use_4_3_video;
+  reg use_4_3_video;
+
+  reg [31:0] reset_delay = 0;
 
   MAIN_SNES snes (
       .clk_mem_85_9 (clk_mem_85_9),
       .clk_sys_21_48(clk_sys_21_48),
 
-      .core_reset(~pll_core_locked),
+      .core_reset(~pll_core_locked || reset_delay > 0),
 
       // Settings
       .multitap_enabled(multitap_enabled),