Скачать или смотреть 7. MPMC:: Logic pin out -2:: Minimum and maximum mode signals 2021.04.16

3/4 ECE:: SECOND SEMESTER (2020-21)

subject: Microprocessors and Microcontrollers (R1632041)

INTEL 8086 has the following limitations

1. 8086 has multiplexed address, data and status signals therefore these
signal lines are to be Demultiplexed

2. Appropriate control signals need to be generated for interfacing memory
and I/O devices to 8086 processor

All the signals of 8086 are can be defined into three groups :

1. Common signals

2.Minimum mode signals

3. Maximum mode signals

Minimum mode signals : INTA' , WR', ALE, DEN', DT/R', M/IO', HOLD, HLDA

Maximum mode signals :

QS1, QS0 : Queue status

S’0 , S’1, S’2 : status signals

LOCK’ : lock prefix

RQ’/GT’0 , RQ’/GT’1 : Bus Request/ Bus Grant