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Figure 69. interrupt acknowledge cycles – Intel 386 User Manual

Page 138

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6-25

BUS INTERFACE UNIT

Figure 6-9. Interrupt Acknowledge Cycles

A2490-03

CLK2

BHE#

BLE#, A25:A3, A1

M/IO#, D/C#, W/R#

LBA#

LOCK#

T2

T1

T2

Ti

Ti

Ti

Ti

T1

T2

Ti

Interrupt

Acknowledge

Cycle 1

(Internal)

Idle

(Four bus states)

Idle

CLKOUT

RD#

A2

Ti

Previous

Cycle

Interrupt

Acknowledge

Cycle 2

(Internal)

ADS#

READY#

WR#