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Dma assignments, Hardware interrupts, System i/o address map – Epson 4DX/33 User Manual

Page 5

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EPSON Endeavor 4SX/25, 4DX/33, and 4DX2/50

VGA Feature Connector (CN8)

System I/O Address Map

VGA Feature Connector Pin Assignments

‘Active low logic

DMA Assignments

Level

Assigned device

DMA0

Spare (&bit)

DMA1

Spare (&bit)

DMA2

FDD controller (&bit)

DMA3

Spare (8-bit)

DMA5

Spare (16-bit)

DMA6

Spare (16-bit)

DMA7

Spare (16-bit)

Hardware Interrupts

IRQ no.
IRQ0
IRQ1
IRQ3

Function

Timer output
Keyboard
Serial port 2

IRQ4
IRQ5
IRQ6

Serial port 1
Available (parallel port 2)

FDD controller

4/1/93

EPSON Endeavor-5