DIGITAL-LOGIC AG

MSEBX800/900 Detailed Manual V1.0

5.2.4.Floppy Disk Interface

Supported Floppy Formats

Capacity

Drive size

Tracks

Data rate

DOS version

1.2MB

720 K

1.44M

5-1/4"

3-1/2"

3-1/2"

80

80

80

500KHz

250KHz

500KHz

3.0- 6.22

3.2- 6.22

3.3- 6.22

Floppy Interface Configuration

The desired configuration of floppy drives (number and type) must be properly initialized in the board's CMOS – configuration memory. This is generally done by using DEL or F2 at bootup time.

Floppy Interface Connector

The table shows the pin-out and signal definitions of the board's floppy disk interface connector. It is identical in pin-out to the floppy connector of a standard AT. Note that, as in a standard PC or AT, both floppy drives are jumpered to the same drive select: as the 'second' drive. The drives are uniquely selected as a result of a swapping of a group of seven wires (conductors 10-16) that must be in the cable between the two drives. The seven-wire swap goes between the computer board and drive 'A'; the wires to drive 'B' are unswapped (or swapped a second time). The 26pin high density (1mm pitch FCC) connector has only one drive and motor select. The onboard jumper defines the drive A: or B:. Default is always A:.

Floppy Disk Interface Technology

Only CMOS drives are supported. This means the termination resistors are 1 KOhm and 5 1/4“-drives are not recommended (TTL interface).

The 26pin connector:

FFC/FPC 0.3mm thick 1.0mm (0.039") pitch (MOLEX 52030 Series)

Floppy Disk Interface Connector

FD26: Pin

Signal Name

Function

in/out

1

2

3

4

5

6

10

12

14

16

17

18

19

20

21

22

23

24

25

26

VCC

+5Volt

IDX

Index Pulse

VCC

+5Volt

DS2

Drive Select 2

VCC

+5Volt

DCHG

Disk Change

MO2

Motor On 2

DIRC

Direction Select

STEP

Step

WD

Write Data

GND

Signal grounds

WE

Write Enable

GND

Signal grounds

TRKO

Track 0

GND

Signal grounds

WP

Write Protect

GND

Signal grounds

RDD

Read Data

GND

Signal grounds

HS

Head Select

in

out

in

out out out out

out

in

in

in

out

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Compaq MSEBX800, MSEBX900 Floppy Interface Configuration, Floppy Interface Connector, Floppy Disk Interface Technology

MSEBX900, MSEBX800 specifications

The Compaq MSEBX800 and MSEBX900 are notable entries in the realm of business computing, designed specifically to meet the needs of enterprise environments. These models epitomize reliability, performance, and advanced technology, making them suitable for a variety of applications in both small offices and large enterprises.

The MSEBX800, built for efficiency, features a powerful processor capable of handling demanding workloads. It supports multiple cores, providing excellent multitasking capabilities. Businesses looking for enhanced productivity will find the MSEBX800's ability to run several applications simultaneously without a hitch particularly beneficial. The system also incorporates ample memory slots, allowing for easy upgrades to accommodate growing data needs.

On the other hand, the MSEBX900 takes performance a notch higher. It is engineered for superior performance with enhanced graphics capabilities. Featuring advanced GPU options, the MSEBX900 is well-suited for tasks such as graphic design and video editing, delivering crisp visuals and smooth rendering. The inclusion of high-speed storage options, including SSD configurations, accelerates data access times, promoting a seamless user experience.

Both models come equipped with energy-efficient components, ensuring lower operational costs and a reduced environmental footprint. Their design focuses on cooling efficiency, allowing them to operate at optimal temperatures even under heavy workloads.

Connectivity is another strong suit of both MSEBX800 and MSEBX900. They are equipped with multiple USB ports, including USB 3.0 for rapid data transfer, as well as HDMI and DisplayPort options for versatile display capabilities. Additionally, these models support various networking technologies for seamless integration into existing IT infrastructures.

Security features are paramount in these models, incorporating advanced encryption and hardware security options to protect sensitive business information. Their compatibility with enterprise-level management tools further facilitates IT administration, making it easy to monitor and maintain the systems remotely.

In summary, the Compaq MSEBX800 and MSEBX900 stand out with their cutting-edge technology, robust performance, and essential features tailored specifically for business users. These models cater to the evolving needs of enterprises, ensuring they remain productive and competitive in the fast-paced digital landscape.