Questions tagged [virtual-memory]
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12 questions
6 votes
1 answer
545 views
Can you write to the GDT on Windows 95 from protected mode? Why, and how?
Can you write to the GDT (Global Descriptor Table) on Windows 95 from protected mode? Why, and how? In some old notes of mine, I have: "In Windows 95 the descriptor tables are accessible from ...
- 1,551
20 votes
3 answers
3k views
How did the Sun-1 handle page faults despite having the original 68000 processor?
The Sun-1 was Sun Microsystems' first Unix workstation. As described in its Wikipedia article, it had a Motorola MC68000 processor and a custom memory management unit: The Sun-1 MMU was necessary ...
- 16.9k
2 votes
2 answers
1k views
How did Unix handle multiprocessing when virtual memory didn't exist?
It seems the first "real" virtual memory management system was the i386 with its powerful paging system that totally isolates processes. How did Unix work before this, ensuring no process ...
user23544
6 votes
1 answer
5k views
How I can install Windows 98SE in Hyper-V, but can't run it after
Create the Gen 1 machine with less than 512MiB Ram (above requires you to put MaxFileCache=524288 and MaxPhysPage=40000 in the system.ini later). Add either a virtual or physical IDE drive (physical ...
- 575
3 votes
2 answers
227 views
virtual addressing in device drivers
Sun's SBus is particular for having virtual addressing and address translation even for device drivers. Any other buss design which had this peculiarity ? Check out Ben Catanzaro's book The SPARC ...
- 387
20 votes
3 answers
5k views
Did Cray computers use virtual memory?
I found a mention on page 777 of the Second Edition of the book "Computer Systems: a programmer's perspective" [Bryant - O'Hallaron] stating that Cray supercomputers still do not use virtual memory (...
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