Index register
Videos
An index register in a computer's CPU is a processor register used for pointing to operand addresses during the run of a program. It is useful for stepping through strings and arrays. It can also be u
Index register display on an IBM 7094 mainframe from the early 1960s
Intel 8086
Videos
The 8086 is a 16-bit microprocessor chip released by Intel on June 8, 1978 after development began in early 1976. It was followed by the Intel 8088 in 1979, which was a slightly modified chip with an
Index register
…In 1975, the 8-bit MOS Technology 6502 processor had two index registers 'X' and 'Y'. In 1978, the Intel 8086, the first x86 processor, had eight 16-bit registers, referred to as "general-purpose", all of which can be used as integer data registers in most…
A rare Intel C8086 processor in purple ceramic DIP package with side-brazed pins
Intel 8086 CPU die image
A ceramic D8086 variant
A plastic P8086 variant