cmd = data[pos] >> 24;
if (0xa0 <= cmd && cmd <= 0xdf) {
+ if (unlikely((pos+2) >= count)) {
+ // incomplete vram write/read cmd, can't consume yet
+ cmd = -1;
+ break;
+ }
+
// consume vram write/read cmd
start_vram_transfer(data[pos + 1], data[pos + 2], (cmd & 0xe0) == 0xc0);
pos += 3;