blog:386_pc

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blog:386_pc [2021/05/08 15:35] – [Case Cover] johnblog:386_pc [2021/05/17 20:43] – [LCD Display Config] john
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    * Using the 486 instruction set in a 386DX package    * Using the 486 instruction set in a 386DX package
-   * Has 1KB of on-cache level 1 cache+   * Has 1KB of on-chip level 1 cache
  
 It will be a nice test for those boards which are socketed to see the performance delta of just changing the processor and keeping everything else the same. It will be a nice test for those boards which are socketed to see the performance delta of just changing the processor and keeping everything else the same.
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 {{:blog:386:img20210508132812.jpg?400|}} {{:blog:386:img20210508132819.jpg?400|}} {{:blog:386:img20210508132812.jpg?400|}} {{:blog:386:img20210508132819.jpg?400|}}
  
-{{:blog:386:img20210508132840.jpg?200|}}{{:blog:386:img20210508135516.jpg?200|}}{{:blog:386:img20210508150757.jpg?200|}} +On it's own, the case looks absolutely fabulousI'm quite keen on the colour; it's enough of an off-white to match the lighter-end of the spectrum of old AT computer cases.
-==== Painting ====+
  
 +{{:blog:386:img20210508135516.jpg?500|}}
 +
 +However, placed next to the cleaned front panel:
 +
 +{{:blog:386:img20210508150757.jpg?500|}}
 +==== Rethinking Things... ====
 +
 +I'm really not keen on painting the front bezel - other than that one edge which has yellowed it is in good condition and painting it would lose all of the button/indicator labels. 
 +
 +My only real option at this point is to repaint the metal casing in a colour that now more accurately matches the front panel.
 ==== LCD Display Config ==== ==== LCD Display Config ====
  
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 {{:blog:386:led_display_-_s-305_and_s-305h.jpg?400|}} {{:blog:386:led_display_-_s-305_and_s-305h.jpg?400|}}
 +
 +By default, the case came configured with a high/low setup to show 33/16MHz:
 +
 +{{:blog:386:img20210511124436.jpg?200|}} {{:blog:386:img20210511124443.jpg?200|}}
 +
 +The rear of the display was set as shown:
 +
 +{{:blog:386:img20210511124550.jpg?300|}}
 +
 +I'll set the display to 40MHz high, and 10MHz low, since there isn't a standard for when turbo is disabled on 386 boards. That means I need to set:
 +
 +   * Units column (//0// in high mode, //0// in low mode)
 +     * 3A 3B 3C 3D 3E 3F
 +   * Tens column (//4// in high mode, //1// in low mode)
 +     * 3B 3C 2F 2G
 +
 +==== Final Configuration ====
 +
 +{{:blog:386:img_2059.jpg?200|}} {{:blog:386:img_2058.jpg?200|}} {{:blog:386:img_2057.jpg?200|}} {{:blog:386:img_2056.jpg?200|}}
 ====== 386 Motherboard Shootout! ====== ====== 386 Motherboard Shootout! ======
  
  • blog/386_pc.txt
  • Last modified: 2021/05/23 20:28
  • by john