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Intel Embedded Intel486 Hardware Reference Manual page 113

Embedded intel486 processor
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8259A
Programmable
Interrupt
Controller
IRQ13
Figure 4-36. DOS-Compatible Numerics Error Circuit
RESET
VCC
CLR
Q
D
Q
PR
5V
VCC
CLR
Q
D
Q
PR
VCC
BUS OPERATION
I/O Port 0F0H
Address decoder
Processor Bus
FERR#
Intel486™
Processor
IGNNE#
INTR
4-49

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Intel486 seriesInteldx4Inteldx2Ultra-low power intel486 sxUltra-low power intel486 gx

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