ROM and RAM

gogol · Oct 4, 2006

What does ROM and RAM means related to the HTC TyTn ?

HTC TyTn ROM = 128 MB
HTC TyTn RAM = 64 MB

When you install application to the "Storage Memory", where will it be installed ? in the RAM ?

What are installed in the ROM ?

Where the default application from the provider (e.g. T-Mobile) are installed ?

Thanks!

goestoeleven · Oct 4, 2006

gogol said:
What does ROM and RAM means related to the HTC TyTn ?

HTC TyTn ROM = 128 MB
HTC TyTn RAM = 64 MB

When you install application to the "Storage Memory", where will it be installed ? in the RAM ?

What are installed in the ROM ?

Where the default application from the provider (e.g. T-Mobile) are installed ?

Thanks!

The 128 MB of Flash ROM is broken into two parts:

- 64 MB for "Storage" (think hard disk space)
- 64 MB for "Program" execution (also called "RAM")

Programs reside in storage until they are activated (at which point they are also loaded into RAM). The amount of RAM you have available is what's left after loading the OS.

The carrier apps are also stored in ROM/RAM.

Lurker0 · Oct 5, 2006

RAM is used to run applications. Its content gets lost on power off.

ROM (Flash RAM indeed) is used to store firmware, to install user applications and to keep data. Its content is kept even without power. "Extended ROM" is also a part of 128MB "ROM".

As I understand, HTC TyTN has NAND flash, and so no XIP and PagePool consumes a lot of RAM, though making things to run faster.

A good reading for beginners is here and here.

I don't like the tendency to call flash memory that is writeable as "ROM" (=Read-Only Memory). IMHO it provides a lot of confusions.

pof · Oct 5, 2006

Very good explanation Lurker0, and both articles are worth reading for anyone!

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ROM and RAM

gogol

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goestoeleven

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Lurker0

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pof

Retired Moderator

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