Thierry Lelégard lelegard

Apple architectures `arm64` and `arm64e` on macOS

This document has been moved here, inside the arm-cpusysregs project.

Installing Ubuntu for IBM s390x on Qemu

This note is a summary of my experience of installing Ubuntu for IBM s390x on Qemu on a macOS host. This is just a personal experience. There may be other ways.

If you wonder why I had the silly idea of installing an IBM s390x virtual machine on macOS, 1) because it is possible, 2) because it is a big endian system which can be useful to test the portability of some applications.

For simplicity, all files will be copied in one single dedicated directory and all commands will be run from that current directory.

Initial reference: https://community.ibm.com/community/user/ibmz-and-linuxone/blogs/timothy-sipples1/2020/04/28/run-ubuntu-z-linuxone

Installing Ubuntu for RISC-V on Qemu

This note is a summary of my experience of installing Ubuntu for RISC-V on Qemu on a macOS host. This is just a personal experience. There may be other ways.

For simplicity, all files will be copied in one single dedicated directory and all commands will be run from that current directory.

Initial reference: https://wiki.ubuntu.com/RISC-V/QEMU

Prerequisites

Setting Qt Creator language on macOS with Homebrew

On macOS, the C++ IDE "Qt Creator" can be installed using Homebrew. This is simpler than fetching and installing the complete Qt for Open Source Use environment. The updates are also managed with the rest of Homebrew.

The installation command is:

brew install qt-creator

	function Set-WallPaper {
	<#
	.SYNOPSIS

	Applies a specified wallpaper to the current user's desktop
	Reference: https://www.joseespitia.com/2017/09/15/set-wallpaper-powershell-function/

	.PARAMETER Image

	Provide the exact path to the image

	#!/usr/bin/env bash
	# Create a one-page blank PDF file.
	# Optionally with same page size as an existing reference PDF file (default size: A4).

	SCRIPT=$(basename "$0")
	usage() { echo >&2 "usage: $SCRIPT output-file [reference-file]"; exit 1; }
	error() { echo >&2 "$SCRIPT: error: $*"; exit 1; }
	warning() { echo >&2 "$SCRIPT: warning: $*"; }

	# Find various tools.

	#!/usr/bin/env bash
	# Reorder pages in a PDF file to print a booklet.
	# Then, print the output PDF in duplex mode, short-edge binding, 2 pages per sheet.

	SCRIPT=$(basename "$BASH_SOURCE")
	INFILE=
	OUTFILE=
	VERBOSE=false
	SYSTEM=$(uname -s)

	<#
	.SYNOPSIS

	Disable Windows power throttling on VirtualBox executables.

	Copyright (c) 2024, Thierry Lelegard
	BSD-2-Clause license, see https://opensource.org/license/BSD-2-Clause

	The problem: On some recent Intel chips such as the Alder Lake family,
	there are two types of cores: P-cores and E-cores. P-cores are designed