×
The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.
Hello Mark,
Am 07.09.2020 um 19:32 schrieb Mark Waterbury <mark.s.waterbury@xxxxxxxxxxxxx>:
You are correct -- the PowerPC 603 is the "MFIOP" -- the "multi-function I/O Processor ... :-) That is a 32-bit PowerPC, as it does not need the full power of a 64-bit processor just to run the I/O stuff ... ;-) It runs a small embedded real-time "OS" (written in Modula-2 apparently) to manage all of the concurrent I/O activities on the various SCSI devices ... and to talk to the other IOAs, such as the Twinax controller or Ethernet controller.
… and Token Ring, in my case. ;-)
Yes, 32 Bits. Info about the 100 MHz version:
http://www.cpu-world.com/CPUs/PowerPC-603/IBM-EMPPC603eFE-100%20-%20IBM25EMPPC603eFE-100.html
Funnily, people actually collect these things. :-)
http://www.cpu-world.com/forum/viewtopic.php?t=31994
Thanks again! Valuable background information!
Is this a probably case of a "switch" from service processor mode after power on to IOP mode after giving control to the main CPU in the course of an IPL?
:wq! PoC
PGP-Key: DDD3 4ABF 6413 38DE -
https://www.pocnet.net/poc-key.asc
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2025 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact
copyright@midrange.com.
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.