Intel Based Microcontorllers
and CPU's

8051 Microcontroller FAQ (HTML Version)

Great 8051 resource with schematics and code
Prototyping Tools for the 8051
8051 support files, tutorials and compilers for this uController.
8051 Tiny Basic information and ROM Code.

8031 Microcontroller Information
ApBUILDER - Intel's own x86 embedded development tool. Free.
86BUGS List (documented and undocumented errors in Intel 8088/8086 chips
intelhex.tut - Tutorial on intelhex format for EPROMS
i8259.tut - Tutorial on the Intel Programmable Interrupt Controller.
ibmports.map - all unused I/O ports on XT/AT architecture.