Most utterly obsolete 32bit PC hardware falls into this arch/category, it is as back in time as the linux kernel can go on x86 support.
| HTTP | https://downloads.openwrt.org/releases/packages-18.06/i386_i486/ |
| FTP | ftp://ftp.halifax.rwth-aachen.de/lede/releases/packages-18.06/i386_i486/ |
See Mirrors for more download sites.