5.2I/O Port Address Map

Each peripheral device in the system is assigned a set of I/O port addresses, which also become the identity of the device. The following table lists the I/O port addresses used:

Address

 

Device Description

 

 

 

00000000

- 00000007

DMA Controller

 

 

 

00000000

- 00000CF7

PCI bus

 

 

 

00000010

- 0000001F

Motherboard Resource

 

 

 

00000020

- 00000021

Programmable Interrupt Controller

 

 

 

00000022

- 0000003F

Motherboard Resource

 

 

 

00000040

- 00000043

System Timer

 

 

 

00000044

- 0000005F

Motherboard Resource

 

 

 

00000060

- 00000060

Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard

 

 

00000061 – 00000061

System Speaker

 

 

 

00000062

- 00000063

Motherboard Resource

 

 

 

00000064

- 00000064

Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard

 

 

 

00000065

- 0000006F

Motherboard Resource

 

 

 

00000070

- 00000073

System CMOS/real time clock

 

 

 

00000074

- 0000007F

Motherboard Resource

 

 

 

00000080

- 00000090

DMA Controller

 

 

 

00000091

- 00000093

Motherboard Resource

 

 

 

00000094

- 0000009F

DMA Controller

 

 

000000A0 - 000000A1

Programmable Interrupt Controller

 

 

000000A2 - 000000BF

Motherboard Resource

 

 

000000C0 - 000000DF

DMA Controller

 

 

000000E0 - 000000EF

Motherboard Resource

 

 

000000F0 - 000000FF

Numeric Data Processor

 

 

000001F0 - 000001F7

Primary IDE Channel

 

 

 

00000274

- 00000277

ISAPNP Read Data Port

 

 

 

00000279

- 00000279

ISAPNP Read Data Port

 

 

 

00000294

- 00000297

Motherboard Resource

 

 

 

ETX-945 User Manual 1.00

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Epson ETX-945 user manual I/O Port Address Map, Address Device Description

ETX-945 specifications

The Epson ETX-945 is a versatile all-in-one printer designed to meet the needs of both home offices and small businesses. As part of Epson's EcoTank series, the ETX-945 features a revolutionary cartridge-free design that utilizes a refillable ink tank system. This innovative approach not only reduces waste but also allows for a significantly lower cost per page when compared to traditional cartridge-based printers.

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The ETX-945 is equipped with both print and scan capabilities, making it a true all-in-one solution. Its printing technology utilizes PrecisionCore, Epson's proprietary technology that delivers high-quality prints at impressive speeds. With a maximum resolution of 4800 x 1200 dpi, text documents are crisp and clear, while color photos boast vibrant and accurate colors.

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In summary, the Epson ETX-945 stands out as a powerful, efficient, and eco-friendly printer that is perfect for creating high-quality documents and images. With its cost-effective ink tank system, diverse connectivity options, and multifunction capabilities, it serves as an ideal partner for both professionals and everyday users alike.