Welcome, Guest. Please login or register.

Author Topic: Pre-April Pegasos motherboard for sale, taking offers.  (Read 3576 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline downix

  • Hero Member
  • *****
  • Join Date: Jan 2003
  • Posts: 1587
    • Show all replies
    • http://www.applemonthly.com
Re: Pre-April Pegasos motherboard for sale, taking offers.
« on: March 07, 2004, 01:12:52 AM »
@odin

Semi right, the problem concerns DMA access period, not just of the IDE bus.  If you run SCSI, Firewire, ethernet, etc, all of it can use DMA, and in these motherboards, DMA does not work.  This makes all of it slower than otherwise.
Try blazedmongers new Free Universal Computer kit, available with the GUI toolkit Your Own Universe, the popular IT edition, Extremely Reliable System for embedded work, Enhanced Database development and Wide Area Development system for telecommuting.
 

Offline downix

  • Hero Member
  • *****
  • Join Date: Jan 2003
  • Posts: 1587
    • Show all replies
    • http://www.applemonthly.com
Re: Pre-April Pegasos motherboard for sale, taking offers.
« Reply #1 on: March 07, 2004, 03:41:00 PM »
@Framiga

With DMA disabled, neither occurs, hence slowness becomes the problem.

If you choose to use DMA in a DMA-unsafe situation, corruption will occur, weither this means sound corruption, memory thrashing, etc.  Then the situation becomes one of the consumer running the machine in a non-prescribed manner.
Try blazedmongers new Free Universal Computer kit, available with the GUI toolkit Your Own Universe, the popular IT edition, Extremely Reliable System for embedded work, Enhanced Database development and Wide Area Development system for telecommuting.
 

Offline downix

  • Hero Member
  • *****
  • Join Date: Jan 2003
  • Posts: 1587
    • Show all replies
    • http://www.applemonthly.com
Re: Pre-April Pegasos motherboard for sale, taking offers.
« Reply #2 on: March 07, 2004, 03:58:15 PM »
@Paul

Rogue can contradict me until the cows come home.

Has he ever designed a motherboard using the Articia-S?  No.

Has he ever even taken an EE course?  No.

Has he ever even run a circuit diagnosis?  No.

Fact is, he is not in any position to discuss a hardware problem.  He is a talented software engineer.  When all you have is a hammer, all of your problems look like nails.  That is the case here.
Try blazedmongers new Free Universal Computer kit, available with the GUI toolkit Your Own Universe, the popular IT edition, Extremely Reliable System for embedded work, Enhanced Database development and Wide Area Development system for telecommuting.