[NTLK] Ultimate NOS 1.x device

[David Arnold]

Hi Matt,

I imagine that it might work, but I doubt the extra capabilities would be enabled.

I speculate that the backlight is turned on and off using an I/O pin, and that there's a driver in NOS2.0 that knows which pin and toggles it on demand.  NOS1.3 would likely lack that driver, and so the MP120 ROM wouldn't be able to control the backlight.

I suspect that the additional RAM in the 130 would suffer a similar fate: the MP120 ROM would likely have an "end of RAM" address baked in, and the fact there there was more available would be invisible to it.

A bit of investigation with Einstein would probably let you confirm these guesses ...




d

On Fri, Mar 13, 2026, at 8:35 AM, Matt Materniak wrote:
> In the quest to find the 'best' NOS 1.x device, a random curious thought
> popped into my head.
>
> Would the rom board from an MP120 running 1.3 work in an MP130?
>
> That could possibly make a 1.x device that has a backlight and 512k more
> storage.
> ----------------------------------------------------------------------
>
> https://newtontalk.net
> https://bitbang.social/@newtontalk
> https://twitter.com/newtontalk