Questions tagged [rom]

Read Only Memory - Memory circuits that are only read and not able to be written to. They may have their values stored via mask programmability during manufacturing, or by being programmed at the factory. MEant to contain code or data that is unchangeable, like boot loaders.

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4answers
53k views

Construct an 8k X 32 ROM using 2k X 8 ROM chips

Construct an 8k X 32 ROM using 2k X 8 ROM chips and any additional required components. Show how the address and data lines of the constructed 8k X 32 ROM are connected to the 2k X 8 chips. I ...
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4answers
49k views

What is the difference between PLA and ROM?

I'm finding it hard to understand. What is the difference between PLA and ROM? Can somebody please provide a link or explanation?
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1answer
18k views

Accessing rows of an array using variable in Verilog

I have a module I'm writing in Verilog that effectively contains a 16 by 10 2D array. At a given point and "row", what I want is to have that data pushed to a net that can be read outside of the ...
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3answers
261 views

How does ROM work? [closed]

ROM is a major part of a computer, and even more so in gaming consoles. How exactly do they work, and how can you make them with logic gates/transistors? I'm currently working on many projects, ...
2
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1answer
463 views

Density of ROM vs Flash

Let's say I had a very large static dataset that I'd like to distribute via solid state memory to a lot of people. Let's say it's on the order of terabytes. What would be the densest type of storage I ...
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2answers
89 views

Linker script and data allocation

I know that .data will be in the RAM, but I came across article that says during boot of an micro-controller the initial value of variables is stored in the ROM and ...
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2answers
1k views

Flash/obtain ROM code for Sitara on BeagleBone Black

How is the ROM code loaded/provided on the BeagleBone Black? I see a few possibilities: It is loaded on in TI's factory and is immutable [unlikely] It is flashed on during manufacture of BeagleBone [...
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3answers
1k views

What is the rationale of using diode matrix in ROM

So why do we use diode, compared to simple wires, in ROM?? Googled a bit with no luck. Thanks.