+ gpu.gp0 = 0;
+ gpu.regs[3] = 1;
+ gpu.screen.hres = gpu.screen.w = 256;
+ gpu.screen.vres = gpu.screen.h = 240;
+}
+
+static noinline void update_width(void)
+{
+ int sw = gpu.screen.x2 - gpu.screen.x1;
+ if (sw <= 0 || sw >= 2560)
+ // full width
+ gpu.screen.w = gpu.screen.hres;
+ else
+ gpu.screen.w = sw * gpu.screen.hres / 2560;
+}
+
+static noinline void update_height(void)
+{
+ int sh = gpu.screen.y2 - gpu.screen.y1;
+ if (gpu.status.dheight)
+ sh *= 2;
+ if (sh <= 0)
+ sh = gpu.screen.vres;
+
+ gpu.screen.h = sh;
+}
+
+static noinline void decide_frameskip(void)
+{
+ gpu.frameskip.frame_ready = !gpu.frameskip.active;
+
+ if (!gpu.frameskip.active && (*gpu.frameskip.advice || gpu.frameskip.set == 1))
+ gpu.frameskip.active = 1;
+ else
+ gpu.frameskip.active = 0;
+}
+
+static noinline void get_gpu_info(uint32_t data)
+{
+ switch (data & 0x0f) {
+ case 0x02:
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ gpu.gp0 = gpu.ex_regs[data & 7] & 0xfffff;
+ break;
+ case 0x06:
+ gpu.gp0 = gpu.ex_regs[5] & 0xfffff;
+ break;
+ case 0x07:
+ gpu.gp0 = 2;
+ break;
+ default:
+ gpu.gp0 = 0;
+ break;
+ }
+}
+
+long GPUinit(void)
+{
+ int ret;
+ ret = vout_init();
+ ret |= renderer_init();
+