4 ms·

For a way more detailed look at memory architectures and implementation, check out Ulrich Drepper's classic paper "What Every Programmer Should Know About Memor

by yan 13y ago

For a way more detailed look at memory architectures and implementation, check out Ulrich Drepper's classic paper "What Every Programmer Should Know About Memory"[1] [1] http://www.akkadia.org/drepper/cpumemory.pdf http://www.akkadia.org/drepper/cpumemory.pdf

bloodorange 13y ago
This, ladies and gentlemen, is a particularly detailed and good read. Please do give it a glance if you haven't already.
demallien 13y ago
Or on a more light-hearted note: http://folklore.org/StoryView.py?project=Macintosh&story=Sound_By_Monday.txt&sortOrder=Sort%20by%20Date&detail=medium http://folklore.org/StoryView.py?project=Macintosh&story=Sou... Which just goes to show, hitting memory is a Bad Thing(tm) even when you're running on a slow(from today's perspective) processor like a 68000.
- raverbashing 13y ago
  Very impressive Doing 22kHz generation on a Macintosh is very close to the limit
  - NormaHHopson 13y ago
    my friend's step-sister makes $84/hr on the computer. She has been laid off for nine months but last month her check was $21144 just working on the computer for a few hours. Continue Reading ===================================================http://www.Works23.Com http://www.Works23.Com
- derleth 13y ago
  It wasn't always thus: On the 6502, which the early Apple II machines were built around, it was possible to access RAM at only a one- or two-cycle penalty compared to doing everything in registers and immediate values. This was only the case if you used zero-page memory without indexing, however, so you couldn't have a lot of stuff in RAM without incurring more speed penalties. http://www.6502.org/tutorials/6502opcodes.html http://www.6502.org/tutorials/6502opcodes.html (Zero-page memory on the 6502 was the memory accessed via addresses with a high byte of 0x00. Since 6502 had sixteen-bit RAM addressing, this meant each page was 256 bytes large, so the zero-page was almost as good as having 256 single-byte registers.)
solarexplorer 13y ago
If you want to buy good book on the topic: "Memory Systems: Cache, DRAM, Disk" by Bruce Jacob, Spencer Ng, David Wang
- yan 13y ago
  A few days late, but thanks

by yan 13y ago

bloodorange 13y ago

This, ladies and gentlemen, is a particularly detailed and good read. Please do give it a glance if you haven't already.

demallien 13y ago

Or on a more light-hearted note: http://folklore.org/StoryView.py?project=Macintosh&story=Sound_By_Monday.txt&sortOrder=Sort%20by%20Date&detail=medium http://folklore.org/StoryView.py?project=Macintosh&story=Sou... Which just goes to show, hitting memory is a Bad Thing(tm) even when you're running on a slow(from today's perspective) processor like a 68000.

raverbashing 13y ago
Very impressive Doing 22kHz generation on a Macintosh is very close to the limit
- NormaHHopson 13y ago
  my friend's step-sister makes $84/hr on the computer. She has been laid off for nine months but last month her check was $21144 just working on the computer for a few hours. Continue Reading ===================================================http://www.Works23.Com http://www.Works23.Com
derleth 13y ago
It wasn't always thus: On the 6502, which the early Apple II machines were built around, it was possible to access RAM at only a one- or two-cycle penalty compared to doing everything in registers and immediate values. This was only the case if you used zero-page memory without indexing, however, so you couldn't have a lot of stuff in RAM without incurring more speed penalties. http://www.6502.org/tutorials/6502opcodes.html http://www.6502.org/tutorials/6502opcodes.html (Zero-page memory on the 6502 was the memory accessed via addresses with a high byte of 0x00. Since 6502 had sixteen-bit RAM addressing, this meant each page was 256 bytes large, so the zero-page was almost as good as having 256 single-byte registers.)

solarexplorer 13y ago

If you want to buy good book on the topic: "Memory Systems: Cache, DRAM, Disk" by Bruce Jacob, Spencer Ng, David Wang

yan 13y ago
A few days late, but thanks