AML M5900 Portable Batch Data Terminal User Manual

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The M5900 Terminal Memory

The M5900 Memory Allocation

To reduce weight and increase reliability, the M5900 does not have a mechanical hard
drive like a standard PC, and all programs and data must be stored in the M5900’s
electronic memory devices. The M5900 has two types of electronic memory devices,
Flash and SDRAM.

The SDRAM memory works much like a standard PC, The Linux® operating system and
any programs currently being executed, are utilizing the SDRAM memory. Very large
programs that exceed the SDRAM memory storage size cannot be executed on the
M5900.

Some of the Flash memory is used by the Linux® operating system along with other
associated programs. On the M5900 there is a large percentage of Flash memory
available for user programs.

2 MB: Decompressed Linux Kernel
8 MB: Decompressed Root Filesystem
4 MB: Background applications and Main Menu
2 MB: Application Interpreter
-------------------------------------------------------

So, 32 MB - (2 + 8 + 4 + 2) = 16 MB free for use for user programs

So there is usually around 16 MB free SDRAM on the M5900 terminal at any given time
to run user applications.

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