City #13 29 мая 1999

Железо

Iron - Pseudo Turbo for Scorpio (acceleration 3%).

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                  PLANET SHELEZYAKA
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(C) V. Kazakov


    PSEUDO-TURBO-processor mode in Scorpio


  Actually, this revision turbo mode can be
to name a very, very big stretch: the performance of RAM is 
increased by only 3%, but the truth at the same time begin to 
operate some programs have not previously worked, for example, 
I have earned the magazine ZX-POWER # 1. So I still recommend 
you build this device, the more so because it Installation 
takes less than 15 minutes. 

  So, for the work we need to switch
one group of contacts, working on switching
(Like a toggle switch), and a few kilometers mounting
wire.

  The essence of the revision is as follows. In chip D4 K555IE7 
of 15 feet cut off +5 V and connect it via a switch or to 
ground ("turbo"), or to +5 V (the "norm"). If you are using a 
switch with two groups of contacts, then a second group

You can prisobachit display modes "turbo" / "normal"
on the LED.

  Chip D4 is located in the lower right corner
the computer's motherboard, if placed its system
jack up. Count the third in a chip of quartz 14 MHz up and can 
do with it all you want. It is not excluded that you will be 
able to overclock your machine up to 130 MHz. 

  Good luck in your computers turbirovanie
and bid you farewell until the next release.