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--- builderpages:abingham:486_linux_notes [2024/08/09 00:09] – Revision from 2024-08-09
+++ builderpages:abingham:486_linux_notes [2026/06/15 12:54] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+/* Imported from Wayback Machine
+   Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:abingham:486_linux_notes
+   Snapshot date: 2025-12-08
+   Generator    : wayback-archiver
+*/
+Working on Ubuntu 16.04 LTS x64 edition.
+Use https://github.com/richfelker/musl-cross-make to create an i486 musl cross compiler
+Use https://github.com/landley/mkroot to create a kernel + file system image
+Copied mkroot/modules/kernel to mkroot/modules/kernel-ab and removed some of the config options: -ipv6 support -ethernet -ethernet card driver -ext2/4 and vfat support -high performance timer -no hz mode -
+The final kernel + compressed ram image is ~1500kb. It includes a 16550 serial driver for the console, and we have a 16550 serial port on the V3 MS-DOS Support Board.
+Booting this image in QEMU requires 24 MB of RAM.
+We will need to support the 'Query System Memory Map' function - http://www.uruk.org/orig-grub/mem64mb.html - for the kernel to know what memory is in the system.