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PosterThread
Fl@sh 
Re: Trevor's role
Posted on 19-Apr-2021 11:32:35
#1 ]
Regular Member
Joined: 6-Oct-2004
Posts: 253
From: Napoli - Italy

@All

About endianless of ARM architecture I have to say things are not how they was described in prior posts.
At least until ARM V7 architecture.

As I remembered, and probably confirmed here, instruction/registers are always in Little Endian mode and only data access can be performed in Big Endian mode.
This is due networking devices where ARM cpus are very common, in this way cpu doesn't have to swap nibbles between LE and BE modes.
If someone can confirm this and can extend the case even on ARM V8 arch is welcome.

This way to run represents a big stone on OS4 porting on ARM.
Maybe IMHO could be much better use Talos Blackbird systems with Power8/Power9 ultrafast cpus with ECC Memory support and port OS4 here.
Blackbird is all opensource so you don't have to ask but only to read docs, work on it and just make things happen.

_________________
Pegasos II G4@1GHz 2GB Radeon 9250 256MB
AmigaOS4.1 fe - MorphOS - Debian 9 Jessie

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