Trying to find out how much RAM can be given to a PPC PReP machine. In the IBM 40p the PCI host controller is sitting at 0x80000000, which means that in theory 2 GiB can be easily given:
And it even is recognized by AIX 5.1:
Now I wonder, there were some 32 bit RS/6000 machines with 3 GiB RAM, where there any PReP machines among them?
QEMU PReP/40p, Serial #0, 2 GiB memory installed Open Firmware, built June 14, 2020 13:25:09 Copyright (c) 1995-2000, FirmWorks. Copyright (c) 2014,2017,2019,2020 Artyom Tarasenko. Rebooting with command: boot /pci/scsi@1/disk@0,0:1 Boot device: /pci/scsi@1/disk@0,0:1 Arguments: Saving Base Customize Data to boot disk Starting the sync daemon Starting the error daemon System initialization completed. Starting Multi-user Initialization Performing auto-varyon of Volume Groups Activating all paging spaces 0517-075 swapon: Paging device /dev/hd6 is already active.
And it even is recognized by AIX 5.1:
AIX Version 5
(C) Copyrights by IBM and by others 1982, 2000.
Console login: root
*******************************************************************************
* *
* *
* Welcome to AIX Version 5.1! *
* *
* *
* Please see the README file in /usr/lpp/bos for information pertinent to *
* this release of the AIX Operating System. *
* *
* *
*******************************************************************************
# lsattr -El mem0
size 2048 Total amount of physical memory in Mbytes False
goodsize 2048 Amount of usable physical memory in Mbytes False
#
Now I wonder, there were some 32 bit RS/6000 machines with 3 GiB RAM, where there any PReP machines among them?
