5 Power-On Self-Test and Error Messages

Order in Which the Tests are Performed

Order in Which the Tests are Performed

Each time the system is powered on, or a reset is performed, the POST is executed. The POST process verifies the basic functionality of the system components and initializes certain system parameters.

The POST starts by displaying a graphic screen with the initial “Vectra” logo when the PC is restarted. If the POST detects an error, the error message is displayed inside a view system errors screen, in which the error message utility (EMU) not only displays the error diagnosis, but the suggestions for corrective action (see page 89 for a brief summary). Error codes are no longer displayed.

Devices, such as memory and newly installed hard disks, are configured automatically. The user is not requested to confirm the change. Newly removed hard disks are detected, and the user is prompted to confirm the new configuration by pressing . Note, though, that the POST does not detect when a hard disk drive has been changed.

During the POST, the BIOS and other ROM data is copied into high-speed shadow RAM. The shadow RAM is addressed at the same physical location as the original ROM in a manner which is completely transparent to applications. It therefore appears to behave as very fast ROM. This technique provides faster access to the system BIOS firmware.

The following table lists the POST routines in the order in which they are executed (from the shadow RAM). If the POST is initiated by a soft reset and Delete , the RAM tests are not executed and shadow RAM is not cleared. In all other respects, the POST executes in the same way following power-on or a soft reset.

Test

Description

 

System BIOS Tests

LED Test

Tests the LEDs on the control panel.

 

 

System (BIOS) ROM Test

Calculates an 8-bit checksum. Test failure causes the boot process to abort.

 

 

RAM Refresh Timer Test

Tests the RAM refresh timer circuitry. Test failure causes the boot process

to abort.

 

 

 

 

Checks the first 64 KB of system RAM used to store data corresponding to

Interrupt RAM Test

various system interrupt vector addresses. Test failures cause the boot

 

process to abort.

 

 

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HP Vectra VL 5/xxx 5 manual Order in Which the Tests are Performed, Tests the LEDs on the control panel, To abort

Vectra VL 5/xxx 5 specifications

The HP Vectra VL 5/xxx was a series of desktop personal computers introduced by Hewlett-Packard in the mid-1990s. These machines were designed for both business and professional environments, making them suitable for a range of applications from basic office tasks to more demanding computing needs. This series played a significant role in HP's efforts to strengthen its market presence in the PC sector during a time when competition was intensifying.

One of the standout features of the HP Vectra VL 5/xxx line was its versatility. The series included various configurations designated by the '5/xxx' nomenclature, which indicated different performance levels and specifications. The performance was driven primarily by Intel Pentium processors, widely acclaimed for their reliability and efficiency. This allowed users to choose a model that suited their specific requirements, whether for everyday tasks or more resource-intensive applications.

In addition to its strong processing capabilities, the Vectra VL 5/xxx featured advanced graphics support, which was critical for visual applications and presentations. Many units in this series came equipped with onboard graphics capabilities that supported a range of resolutions, enhancing the user experience in both standard office environments and more creative settings.

Storage options were another highlight of the HP Vectra VL 5/xxx series. The machines typically featured a variety of hard drive configurations, allowing for ample data storage. Some models included the option for expanding storage through additional hard drives or external devices. Coupled with considerable RAM options, these machines ensured smooth multitasking and efficient performance across various applications.

Connectivity was also a core aspect of the Vectra VL 5/xxx. The systems typically included multiple USB ports, parallel and serial ports, and integrated networking capabilities. This made it easy for businesses to integrate the Vectra machines into their existing infrastructure, facilitating seamless interaction with peripherals and networks.

In terms of design, the HP Vectra VL 5/xxx series presented a robust yet compact form factor, which was ideal for office environments with limited space. Additionally, HP emphasized the reliability and serviceability of these machines, which included easy access to internal components for maintenance and upgrades, thereby extending the product life cycle.

Overall, the HP Vectra VL 5/xxx line offered a balanced combination of performance, flexibility, and reliability, making it a solid choice for organizations looking to leverage computing power for a range of professional applications. The series embodied HP's commitment to delivering quality and innovation in the ever-evolving landscape of personal computing.