From 5362a91b05721940441365c5cf84218e4bdb7549 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Wed, 27 Jun 2018 23:21:22 -0400
Subject: add on_oam_wb()

---
 gb.h     |  1 +
 ops.yaml | 29 +++++++++--------------------
 test.c   | 21 +++++++++++++++++----
 3 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/gb.h b/gb.h
index 2be0806..27e685a 100644
--- a/gb.h
+++ b/gb.h
@@ -42,6 +42,7 @@ typedef struct {
   void (*on_rst)(const gb_t *, const uint16_t);
   void (*on_mmu_rb)(const gb_t *, const uint16_t, const uint8_t);
   void (*on_mmu_wb)(const gb_t *, const uint16_t, const uint8_t);
+  void (*on_oam_wb)(const gb_t *, const uint16_t, const uint8_t);
   void *cb_data;
 } gb_config_t;
 
diff --git a/ops.yaml b/ops.yaml
index 5311d96..7b5e77e 100644
--- a/ops.yaml
+++ b/ops.yaml
@@ -9044,6 +9044,10 @@ templates:
       // oam memory (160 bytes):
       ctx->mmu.oam[addr - 0xFE00] = val;
 
+      if (ctx->config && ctx->config->on_oam_wb) {
+        ctx->config->on_oam_wb(ctx, addr, val);
+      }
+
       // invalidate oam cache
       ctx->gpu.oam_dirty = true;
     }
@@ -9092,6 +9096,8 @@ templates:
           ctx->mmu.ram[addr & 0x1FFF] = val;
           break;
         }
+
+        break;
       default:
         // never reached
         break;
@@ -9108,27 +9114,10 @@ templates:
         ctx->config->on_mmu_wb(ctx, addr, val);
       }
 
-      switch (addr & 0xF000) {
-      case 0x0000:
-      case 0x1000:
-      case 0x2000:
-      case 0x3000:
-      case 0x4000:
-      case 0x5000:
-      case 0x6000:
-      case 0x7000:
-        rom_wb(ctx, addr, val);
-        break;
-      case 0x8000:
-      case 0x9000:
-      case 0xA000:
-      case 0xB000:
-      case 0xC000:
-      case 0xD000:
-      case 0xE000:
-      case 0xF000:
+      if (addr & 0xF000) {
         ram_wb(ctx, addr, val);
-        break;
+      } else {
+        rom_wb(ctx, addr, val);
       }
     }
 
diff --git a/test.c b/test.c
index c798bba..31d1675 100644
--- a/test.c
+++ b/test.c
@@ -9,7 +9,7 @@
 #include "lodepng.h"
 #include "gb.h"
 
-#define SKIP_FRAMES 120
+#define SKIP_FRAMES 1200
 #define NUM_FRAMES 60
 // #define SKIP_STEPS 1000000
 #define NUM_STEPS 300000
@@ -148,14 +148,26 @@ on_rst(
  * }
  */ 
 
+/* 
+ * static void
+ * on_mmu_wb(
+ *   const gb_t * const ctx,
+ *   const uint16_t addr,
+ *   const uint8_t val
+ * ) {
+ *   UNUSED(ctx);
+ *   printf("mmu_wb: addr = 0x%04X, val = 0x%02X\n", addr, val);
+ * }
+ */ 
+
 static void
-on_mmu_wb(
+on_oam_wb(
   const gb_t * const ctx,
   const uint16_t addr,
   const uint8_t val
 ) {
   UNUSED(ctx);
-  printf("mmu_wb: addr = 0x%04X, val = 0x%02X\n", addr, val);
+  printf("oam_wb: addr = 0x%04X, val = 0x%02X\n", addr, val);
 }
 
 static const gb_config_t
@@ -170,7 +182,8 @@ EXECUTE_CONFIG = {
   .on_set_cpu_state = on_set_cpu_state,
   .on_rst           = on_rst,
   // .on_mmu_rb        = on_mmu_rb,
-  .on_mmu_wb        = on_mmu_wb,
+  // .on_mmu_wb        = on_mmu_wb,
+  .on_oam_wb        = on_oam_wb,
 };
 
 static void
-- 
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