Memtest serial

The mt MemTest86 Technical Information. Configuring MemTest86 When MemTest86 boots, a splashscreen is displayed with a 10 second countdown timer which when expires, automatically starts the memory tests with default settings.

The Main Menu is structured as follows: System Info - displays the hardware details of the system Test Selection - specifies which tests to enable, and how many passes to run Address Range - specifies the lower and upper address memory limits to test CPU Selection - select between Single, Parallel, Round Robin and Sequential modes Start - start executing the memory tests RAM Benchmark - performs benchmarking tests on RAM, and graphs the results on a chart Settings - configure general MemTest86 settings such as language selection and screen resolution Exit - exits MemTest86 and reboots the system Pro and Site Edition only Memory test parameters can also be set via a configuration file mt Each test is specified by a test number, separated by a comma.

This replaces the standard Test individual tests used by default. See Custom test definitions for file format specifications. This must be a number greater than 0. To specify a hex address, the address must begin with '0x'.

Otherwise, the address shall be interpreted as a decimal address. This is useful for using only a subset of the available CPUs when performing memory testing. By default, all available CPUs are enabled. By default, memory tests are not run on hyperthreads. By default, the first pass shall run a reduced test ie. This is useful if you know that the memory controller maps a particular address to a channel using this decoding scheme. If this parameter is specified and MemTest86 detects a memory error, the channel number will be calculated and displayed along with the faulting address.

Each bit position specified is separated by a comma. This is useful if you know that the memory controller maps a particular address to a slot using this decoding scheme. If this parameter is specified and MemTest86 detects a memory error, the slot number will be calculated and displayed along with the faulting address. This is useful if you know that the memory controller maps a particular address to a CS bit using this decoding scheme.

If this parameter is specified and MemTest86 detects a memory error, the CS bit will be calculated and displayed along with the faulting address. A durable polypropylene case with snap latches and a carry handle. No installation required. Download Buy MemTest86 Pro. What is MemTest Why test your ram? All tests except for 11 Bit Fade have been multi-threaded. A maximum of 16 CPUs will be used for testing.

CPU detection has been completely re-written to use the brand ID string rather than the cumbersome, difficult to maintain and often out of date CPUID family information.

All new processors will now be correctly identified without requiring code support. This may be a controversial decision and was not made lightly. The following are justifications for the decision: Controller identification has nothing to do with actual testing of memory, the core purpose of MemTest This code needed to be updated with every new chipset.

With the ever growing number of chip-sets it is not possible to keep up with the changes. The result is that new chipsets were more often than not reported in-correctly. In the authors opinion incorrect information is worse than no information. Probing for chipset information carries the risk of making the program crash. The amount of code involved with controller identification was quite large, making support more difficult.

Removing this code also had the unfortunate effect of removing reporting of correctable ECC errors. The code to support ECC was hopelessly intertwined the controller identification code. A fresh, streamlined implementation of ECC reporting is planned for a future release. A surprising number of conditions existed that potentially cause problems when testing more than 4 GB of memory. Most if not all of these conditions have been identified and corrected.

A number of cases were corrected where not all of memory was being tested. For most tests the last word of each test block was not tested. In addition an error in the paging code was fixed that omitted from testing the last bytes of each block above 2 GB. The information display has been simplified and a number of details that were not relevant to testing were removed.

Memory speed measurement has been parallelized for more accurate reporting. This is a major re-write of the MemTest86 with a large number of minor bug-fixes and substantial cleanup and re-organization of the code.

Version 3. CPUs are selected round-robin or sequential for each test. Support for detection of additional chipsets. Additions and corrections for CPU detection including reporting of L3 cache. Reworked information display for better readability and new information. Abbreviated iterations for first pass. Enhancements to memory sizing. Misc bug fixes. Added support for additional chipsets. Additions and corrections for CPU detection.

Support for memory module information reporting. Fixed a bug that prevented testing of low memory. Added an advanced menu option to display SPD info only for selected chipsets. Reworked online command text for better clarity. Added a fix to correct a Badram pattern bug. Uses dynamic relocation information records to make itself PIC instead of requiring 2 copies of MemTest86 in the binary. The serial console code does not do redundant writes to the serial port.

Very little slow down at baud. Version 2. A new online configuration option provides three choices for how memory will be sized, including the old "probe" method.

The default mode generally will not test all of memory, but should be more stable. See the Memory Sizing section for details. Testing of more than 2gb of memory should now work. A number of bugs were found and corrected that prevented testing above 2gb. Testing with more than 2gb has been limited and there could be problems with a full 4gb of memory. Memory is divided into segments for testing. This allow for frequent progress updates and responsiveness to interactive commands. The memory segment size has been increased from 8 to 32mb.

This should improve testing effectiveness but progress reports will be less frequent. Viewed 62 times. Improve this question.

Irsu85 Irsu85 1 1 gold badge 2 2 silver badges 14 14 bronze badges. Thanks guiverc, can you please post that as an answer? Add a comment. Active Oldest Votes. Two options. Improve this answer.