# HG changeset patch
# User Mike Pavone <pavone@retrodev.com>
# Date 1355979239 28800
# Node ID a6dd5b7a971be26f505bf27d5ef9e58fb71500a1
# Parent  b37cb596bc2189553dc3d0e469bf9ea0ba4378e9
Add FPS counter to console output

diff -r b37cb596bc21 -r a6dd5b7a971b render_sdl.c
--- a/render_sdl.c	Wed Dec 19 20:53:45 2012 -0800
+++ b/render_sdl.c	Wed Dec 19 20:53:59 2012 -0800
@@ -162,7 +162,8 @@
 
 #define FRAME_DELAY 16
 #define MIN_DELAY 10
-
+uint32_t frame_counter = 0;
+uint32_t start = 0;
 void wait_render_frame(vdp_context * context)
 {
 	SDL_Event event;
@@ -184,6 +185,7 @@
 			}
 			break;
 		case SDL_QUIT:
+			puts("");
 			exit(0);
 		}
 	}
@@ -200,6 +202,15 @@
 		}
 	}
 	render_context(context);
+	frame_counter++;
+	if ((last_frame - start) > 1000) {
+		if (start) {
+			printf("\r%f fps", ((float)frame_counter) / (((float)(last_frame-start)) / 1000.0));
+			fflush(stdout);
+		}
+		start = last_frame;
+		frame_counter = 0;
+	}
 }
 
 
diff -r b37cb596bc21 -r a6dd5b7a971b vdp.c
--- a/vdp.c	Wed Dec 19 20:53:45 2012 -0800
+++ b/vdp.c	Wed Dec 19 20:53:59 2012 -0800
@@ -892,14 +892,21 @@
 	if (context->flags & FLAG_PENDING) {
 		context->address = (context->address & 0x3FFF) | (value << 14);
 		context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C);
+		if (context->cd & 0x30) {
+			puts("attempt to use DMA detected!");
+		}
+		//printf("New Address: %X, New CD: %X\n", context->address, context->cd);
 		context->flags &= ~FLAG_PENDING;
 	} else {
 		if ((value & 0xC000) == 0x8000) {
 			//Register write
 			uint8_t reg = (value >> 8) & 0x1F;
 			if (reg < VDP_REGS) {
-				//printf("register %d set to %X\n", reg, value);
+				//printf("register %d set to %X\n", reg, value & 0xFF);
 				context->regs[reg] = value;
+				/*if (reg == REG_MODE_2) {
+					printf("Display is now %s\n", (context->regs[REG_MODE_2] & DISPLAY_ENABLE) ? "enabled" : "disabled");
+				}*/
 			}
 		} else {
 			context->flags |= FLAG_PENDING;