EPSON Endeavor 486C

VGA Feature Connector (CN14)

System l/O Address Map

 

VGA Feature Connector Pin Assignments

*Active low logic

DMA Assignments

 

Level

Assigned device

 

DMA0

Spare (8-bit)

 

DMA1

Spare (8-bit)

 

DMA2

Diskette drive controller (8-bit)

 

DMA3

Spare (8-bit)

 

DMA4

Cascade for DMA controller

 

 

 

DMA5

Spare (16-bit)

 

DMA6

spare (16-bit)

1

DMA7

1 spare (16-bit)

 

 

 

Hardware Interrupts

IRQ no.

 

Function

 

 

IRQ0

 

Timer output

 

 

IRQ1

 

Keyboard

 

 

IRQ3

 

Serial port 2

 

 

IRQ4

 

Serial port 1

 

 

1 IRQ5

1

Available parallel port 2)

I

 

1 IRQ6

I FDD controller

 

 

 

IRQ7

1 Parallel port 1

 

 

IRQ8

I Real-time clock

 

 

IRQ9

 

Available

 

 

 

 

IRQ10

 

Available

 

 

IRQ11

 

Available

 

 

IRQ12

 

PS/2 compatible mouse, optional pointing devices

 

 

IRQ13

 

Math coprocessor

 

 

IRQ14

 

HDD controller

 

 

IRQ15

 

Available

 

 

7/15/93

EPSON Endeavor 486C-5