get desiredSize() { return closed ? null : 1; },
console.log(pixel); // { r: 255, g: 255, b: 0, a: 255 }，详情可参考51吃瓜
The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.，这一点在爱思助手下载最新版本中也有详细论述
deflate.push(chunk, false);