simple 8086-based microcomputer

basic 8086 system timing

detailed SDK-86 board

SDK-86 complete schematics

address decoders

interrupts

8254

	8254 internal and system addresses
	8254 control word format
	8254 status word usage
	8254 mode 0 timing waveforms
	8254 mode 1 timing waveforms
	8254 mode 2 timing waveforms
	8254 mode 3 timing waveforms
	8254 mode 4 timing waveforms
	8254 mode 5 timing waveforms
	initialization of 8086, 8259A and 8254
	adding 8259, 8254, 8251A to a 8086 system
	adding 8254 & 8259A(s) to an SDK-86 board

8259A

8255A

8279

8237 and 8272A

8251A

RS-232C

memory

including controllers

minimal 8086 system

displaying contents of CX register

IBM PC motherboard

credits