- Reverse-engineering the 8086 processor’s address and data pin circuits (righto.com)
The Intel 8086 microprocessor (1978) started the x86 architecture that continues to this day. In this blog post, I’m focusing on a small part of the chip: the address and data pins that connect the chip to external memory and I/O devices. In many processors, this circuitry is straightforward, but it is complicated in the 8086 for two reasons. First, Intel decided to package the 8086 as a 40-pin DIP, which didn’t provide enough pins for all the functionality. Instead, the 8086 multiplexes address, data, and status. In other words, a pin can have multiple roles, providing an address bit at one time and a data bit at another time.
- Bahrain (Wikipedia)
Bahrain (/bɑːˈreɪn/ bah-RAYN, /bæxˈreɪn/; Arabic: البحرين, romanized: al-Baḥrayn, lit. ‘Two Seas’, locally [æl bɑħˈreːn]), officially the Kingdom of Bahrain, is an island country in West Asia. It is situated on the Persian Gulf, and comprises a small archipelago made up of 50 natural islands and an additional 33 artificial islands, centered on Bahrain Island which makes up around 83 percent of the country’s landmass. Bahrain is situated between Qatar and the northeastern coast of Saudi Arabia, to which it is connected by the King Fahd Causeway. The population of Bahrain is 1,501,635 as of May 14, 2023, based on elaborations of the United Nations data, of whom 712,362 are Bahraini nationals. Bahrain spans some 760 square kilometres (290 sq mi), and is the third-smallest nation in Asia after the Maldives and Singapore. The capital and largest city is Manama.
