re: http://www.garlic.com/~lynn/2006b.html#25 Multiple address spaces
as an aside ... some systems implement virtual memory but don't support paging. in these situations, the amount of virtual memory will be the same as the amount of real storage. one such system was a hacked version of osmvt release 13 done by boeing huntsville on a duplex (two-processor) 360/67. it was sort of like the vs2-svs effort but w/o paging support. the problem was that boeing huntsville were supporting a number of 2250 graphic displays ... which looked like long running jobs to mvt. mvt required contiguous storage for applications and had problems with storage fragmentation with long running jobs. the hack done by boeing huntsville using virtual memory hardware ... allowed disjoint real storage locations to appear to be contiguous. misc. past posts mentioning boeing huntsville use of 360/67 http://www.garlic.com/~lynn/99.html#174 S/360 history http://www.garlic.com/~lynn/2000f.html#66 360 Architecture, Multics, ... was (Re: X86 ultimate CISC? No.) http://www.garlic.com/~lynn/2001h.html#14 Installing Fortran http://www.garlic.com/~lynn/2001h.html#26 TECO Critique http://www.garlic.com/~lynn/2001m.html#55 TSS/360 http://www.garlic.com/~lynn/2002j.html#22 Computer Terminal Design Over the Years http://www.garlic.com/~lynn/2002q.html#47 myths about Multics http://www.garlic.com/~lynn/2003b.html#0 Disk drives as commodities. Was Re: Yamhill http://www.garlic.com/~lynn/2004.html#16 Holee shit! 30 years ago! http://www.garlic.com/~lynn/2004.html#53 Mainframe not a good architecture for interactive workloads http://www.garlic.com/~lynn/2004c.html#47 IBM 360 memory http://www.garlic.com/~lynn/2004f.html#44 Infiniband - practicalities for small clusters http://www.garlic.com/~lynn/2006.html#40 All Good Things ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
