What Is This Tool?
This online converter facilitates the conversion of data transfer rates from IDE (PIO mode 1), a CPU-controlled transfer mode, to IDE (UDMA mode 0), a direct memory access mode for legacy Parallel ATA devices. It aids in evaluating and comparing transfer speeds in legacy hardware environments.
How to Use This Tool?
-
Enter the data transfer value in IDE (PIO mode 1) units
-
Select IDE (PIO mode 1) as the source unit and IDE (UDMA mode 0) as the target unit
-
Click convert to get the equivalent IDE (UDMA mode 0) value
Key Features
-
Converts data transfer values from IDE (PIO mode 1) to IDE (UDMA mode 0)
-
Supports legacy Parallel ATA (PATA/IDE) interface transfer modes
-
Useful for troubleshooting and performance comparison of legacy storage devices
Examples
-
1 IDE (PIO mode 1) equals 0.313 IDE (UDMA mode 0)
-
5 IDE (PIO mode 1) equals 1.566 IDE (UDMA mode 0)
Common Use Cases
-
Configuring and diagnosing legacy PATA hard drives and optical drives in older PCs or industrial equipment
-
Developing or debugging firmware and device drivers with CPU-driven PIO transfers
-
Benchmarking data transfer performance on vintage or embedded systems that use PIO modes
-
Selecting or troubleshooting DMA timing in BIOS or device drivers for legacy devices
-
Comparing interface performance when migrating from PATA to SATA or USB
Tips & Best Practices
-
Ensure the source device supports IDE (PIO mode 1) and target device supports IDE (UDMA mode 0)
-
Use the converter as a reference for nominal transfer rates rather than precise throughput
-
Apply this conversion to aid in troubleshooting or system upgrade planning
-
Consider hardware condition and system configuration when interpreting results
Limitations
-
Conversion reflects theoretical nominal transfer values and may not represent actual throughput
-
Actual data rates depend on device condition, system setup, and environmental conditions
-
Compatibility between PIO and UDMA modes depends on BIOS and device support
Frequently Asked Questions
-
What does IDE (PIO mode 1) mean?
-
IDE (PIO mode 1) is a CPU-controlled data transfer mode for legacy PATA devices where the host manages each data cycle, resulting in moderate throughput with higher CPU usage.
-
What is IDE (UDMA mode 0)?
-
IDE (UDMA mode 0) is an Ultra DMA transfer mode for PATA devices providing direct memory access with a nominal maximum data rate of about 16.7 MB/s.
-
Why convert from IDE (PIO mode 1) to IDE (UDMA mode 0)?
-
Converting these units helps in analyzing and comparing performance between CPU-driven and DMA-driven data transfers on legacy storage hardware.
Key Terminology
-
IDE (PIO mode 1)
-
A Programmed Input/Output transfer mode where CPU controls each transfer cycle, used in legacy PATA devices with moderate throughput and higher CPU usage.
-
IDE (UDMA mode 0)
-
An Ultra DMA transfer mode defining interface timing and nominal maximum data rate for direct memory access transfers in PATA devices.
-
PATA
-
Parallel ATA, an interface standard for connecting storage devices like hard drives and optical drives.