These manuals are now called “Intel® 64 and IA-32 Architectures Software Developer Manuals”, and the current version is 71. What was the original name of this manual and when was it released?
To answer more specifically concerning version 71 of the Intel ® 64 and IA-32 Architectures Software Developer’s Manual, see order number 252046, Documentation Changes: version 1 of the manual was released in 2002, to document the first 64-bit x86 Intel CPUs. It replaced the IA-32 Intel Architecture Software Developer’s Manual which was first published in 1997.
It started out as a single manual covering hard and software, the
Before that there were only data sheets and manuals about single components, software tools and development boards as well as premade components (iSBC computer boards) (*1).
After that it became the iAPX 86,88 User's Manual.
The 80286 manuals (*2) were the first to add specific software writing (*3) manuals with the 1983 manuals:
*1 - At that point it's important to keep in mind, that despite the 8086 being introduced in August 1978, documentation beside data sheets didn't show up until the 1979 data books.
*2 - Well, that and the 186 manuals of the same time.
*3 - There have been others before on the topic of software related items, like the 80130/150 Operating System Processors, but they are strictly about application of their embedded software blocks.