Another great video game book: the dude who wrote up his personal experiences porting Rampage and R-Type to the Speccy. That was such a fun read. And it is free, .pdf, at author's website. He's not a professional author, per se, but his prose was excellent...the pacing was perfect, and enough technical details were included (instead of glossing them over) to help readers better appreciate the specific coding challenges faced.
BUT NOW I THINK YOU, GALAM, WERE THE ONE WHO POSTED ABOUT THIS ORIGINALLY. So, damn it.