General discussion


Using UltraDMA bust mastering

By kcav ·
I am working with large avi files Looking over the capabilities of my hardware I notice my disk controller is capable of 66MB/s DTR. What do I need to do to take advantage of this capability?

This conversation is currently closed to new comments.

Thread display: Collapse - | Expand +

All Comments

Collapse -

by TheChas In reply to Using UltraDMA bust maste ...

Which OS?

What specific hardware?

First, you need a hard drive that is capable of the UDMA 66 transfer speed.

Keep in mind that the transfer speed is the maximum "burst" rate. Not a continuous data transfer rate.

If you have a fast hard drive, and the motherboard or IDE controller is set to automatic detection, your drive should be set up for the fastest supported transfer rate.

You can check if DMA mode is enabled by looking at the drive properties.
If DMA mode is enabled, there is nothing more to do.

If not, you may need to enable DMA mode for the drive in BIOS settings.

Hardware wise, you do need an 80 conductor cable to have the UDMA 66 data transfer rate function properly.

Now, why do you think a faster data transfer rate will help your AVI files play better?

Free RAM and free hard drive space, along with the display adapter and CPU speed have a greater impact on video playback than hard drive data transfer rates.

If you are running Windows 98 or Me, I recommend that you have 128 to 384MB of RAM.
For Windows 2000 or XP, you want a minimum of 256MB of RAM.

Next, a sound card instead of AC97 codec based on-board sound can improve video playback performance.


Collapse -

by kcav In reply to

Thank you for your help. I believe my hard disks are installed so their maximum DTR capacity can be used.

Collapse -

by kcav In reply to Using UltraDMA bust maste ...

Point value changed by question poster.

Collapse -

by kcav In reply to Using UltraDMA bust maste ...

Thank for your thoughtful reply to my post. Here are the details of my platform configuration. Now that I have replaced 40-pin cable with 80-wire, I think the storage components are balanced. What do you say?

I am running Windows 2000 with a PII-400 processor, 256mb SDRAM.

The Primary IDE Channel has two Seagate, Barracuda ATA II, model ST315320A drives. Unformatted they each have 14,954mb capacity, a 2mb buffer, maximum UDMA transfer mode 4 (ATA/66).

Connected to the Secondary IDE Channel?s Master is a Western Digital, model WD800JB-00ETA0 drive. Unformatted the drive?s capacity is 89,476mb, 8mb buffer, maximum UDMA 5 (ATA-100). The slave drive is another Seagate ST315320A.

Both channels have 80-wire cables.

Award BIOS is set to Auto drive mode, and Block mode is enabled. Device Manager reports IDE ATA/ATAPI Controllers set to DMA if Available, and Current Mode is Ultra Mode Transfer.

You asked why do I think a faster data transfer rate would help with avi files. Don?t know, but avi, bmp, and wav files are ten times larger than files that use formats that synthetically imitated sound, images, and motion. As soon as I establish workflow I want to monitor system performance. Is Performance Manager a good tool to use?

My graphics adapter has 4xAGP, 128 bus, 32mb memory and Rage processor. My sound card is SB 128. Have thought about using a 32-bit card, should I upgrade?

Are there configuration settings for cache memory I should be using? How should I monitor CPU usage? Can memory be allocated to jobs similar to how disk space can be allocated to a file? I would like to tune the system for its intended purpose, and when I start performing work I want to measure resource usage.


Collapse -

by kcav In reply to Using UltraDMA bust maste ...

This question was closed by the author

Related Discussions

Related Forums