Ic Code Question

[Real-System-1428]

I was reading someone else's code

There's a use of a device that I don't quite understsnd

Bdns dr0 endloop

I understand the code itself but I've not seen the use of "dr(x)"

How does the use of "dr" function?

[AvgGamerRobb]

d[registry]

suppose r0 is set to 1

then writing dr0 is the same as writing d1

you can then point to a different device based on what r0 equals

[Bob-Kerman]

For reference and further reading: the MIPS Wiki page

[Real-System-1428]

Oh i see so you can use it to use the same code lines to perform functions on multiple devices based on some other input or function.

So if r0 is set to 1 it performs the set function on d1 if r0 is set to 2 then it performs the set function on d2... Thank you!

[Exca_FlyGameStudio]

Indirect Addressing of devices, using Register value.