我十几岁的时候买过一本 David Webb 写的叫《Advanced Spectrum Machine Language》的书（如果没记错的话），里面给出了彩虹处理器的示例（通过快速连续写入属性文件来实现高分辨率色彩），还有一个全屏地平线效果（通过在……时翻转边框颜色位）
When I was in my teens I bough a book called "Advanced Spectrum Machine Language" by David Webb (IIRC) and it had examples of a rainbow processor (high-res colour by repeatedly writing to the attributes file quickly) and a full-screen horizon (by flipping the border colour bit at…
…how actually-useful this particular reference card is: huge hex conversion table, but no instruction timing chart? Anyway... pure nostalgia caused me to go through an old Z80 assembly book just now ("Advanced Spectrum Machine Language"), and I found some code I wrote a good 35 years or so ago: https://ibb.co/fvqtwkQ This was printed on thermal paper (not sure about the printer model: I don't think it was the original ZX Printer, as…
From his bio: Mr Webb graduated in mathematics from Exeter College, Oxford University in 1986 and prior to that was a computer geek, authoring "Supercharge Your Spectrum" (1983) and "Advanced Spectrum Machine Language" (1984), both books on the subject of machine language programming for the Z-80 based Sinclair Spectrum computer. He also wrote a number of best-selling games for the Sinclair Spectrum, Amstrad CPC and…
我十几岁的时候买过一本 David Webb 写的叫《Advanced Spectrum Machine Language》的书（如果没记错的话），里面给出了彩虹处理器的示例（通过快速连续写入属性文件来实现高分辨率色彩），还有一个全屏地平线效果（通过在……时翻转边框颜色位）
When I was in my teens I bough a book called "Advanced Spectrum Machine Language" by David Webb (IIRC) and it had examples of a rainbow processor (high-res colour by repeatedly writing to the attributes file quickly) and a full-screen horizon (by flipping the border colour bit at…
……这张特定的参考卡到底有多大实用价值：十六进制转换表大得吓人，居然连个指令时钟周期表都没有？不管怎么说……纯粹出于怀旧，我刚才去翻了一本老 Z80 汇编书（《Advanced Spectrum Machine Language》），找到了我大概 35 年前写的代码：https://ibb.co/fvqtwkQ 这是打印在热敏纸上的（不太确定打印机型号：我觉得不是原装的 ZX 打印机，因为……
…how actually-useful this particular reference card is: huge hex conversion table, but no instruction timing chart? Anyway... pure nostalgia caused me to go through an old Z80 assembly book just now ("Advanced Spectrum Machine Language"), and I found some code I wrote a good 35 years or so ago: https://ibb.co/fvqtwkQ This was printed on thermal paper (not sure about the printer model: I don't think it was the original ZX Printer, as…
从他的个人简介来看：Webb 先生于 1986 年毕业于牛津大学埃克塞特学院数学系，在此之前他就是个电脑极客，撰写了《Supercharge Your Spectrum》（1983）和《Advanced Spectrum Machine Language》（1984），两本书都是关于基于 Z-80 的 Sinclair Spectrum 电脑的机器语言编程。他还为 Sinclair Spectrum、Amstrad CPC 以及……开发过多款畅销游戏。
From his bio: Mr Webb graduated in mathematics from Exeter College, Oxford University in 1986 and prior to that was a computer geek, authoring "Supercharge Your Spectrum" (1983) and "Advanced Spectrum Machine Language" (1984), both books on the subject of machine language programming for the Z-80 based Sinclair Spectrum computer. He also wrote a number of best-selling games for the Sinclair Spectrum, Amstrad CPC and…