If you are like me and enjoy reading vid game books, the guy who wrote the R-Type port for ZX Spectrum just wrote a free "making of" book.
I haven't started it yet, but wanted to share the link.
Go to the Download page.
http://bizzley.com/
There, you're welcome.
I'm 15 pages in and it is an effortless read. I will be finishing this because the author has some charm and delivers the narrative sincerely. He is providing just enough context (historical and otherwise) to better appreciate the path he forged (mixed metaphor?) in the late 70's/80's.
He states that he will first delve into his experiences porting
RAMPAGE (!!) before getting into R-Type, and all I can say is AWESOME.
I encourage everyone to get this and read it on their phone/tablet/what-have-you.