Crazy hands - Food for cache.

 CACHE WITH POWER BACKUP    
                                         
(C) 2000 Igor Zhovtonoga                 
-------------------------------------------------------
 Almost simultaneously in two editions 2000
of the year, magazine В_CroW#3 and newspaper CITY #42,
circuit diagrams were published
turning on additional memory, called
my cashmere.  An early cache scheme was given
in SPECTROFON`e 17, as well as in Minsk Ga-
zete LPRINT13. The cache is used in the program
max: REAL COMMANDER, Quick Commander, SPF
and many others.                         
  You can learn more about using the cache
read in the above-mentioned media.         
  Since the memory used in the cache is
the static RAM chip from the low-
kim power consumption in storage mode
information, it turns out to be possible to organize
call storage of information in memory
cache after turning off the computer's power.
  Use RAM in the cache with memory less than
16kundesirable, because modern software
frames require a minimum of 16k for
maximum comfort of working with them.    
  Quite convenient to use as RAM
thread chip 62256, which has a capacity
32k.  16k can be allocated for cache, and others
16k can be used in the future under DOS or
SOS. SchemeRomana Milukov`a, published-
published in the journal B_CroW#3, built with
changing the 1SSLA2 chip (this chip
MA has open collector outputs),
and as a backup power source
A 3v battery is used. In the scheme,
shown in Fig. 1, instead of the element mi-
microcircuit LA2 contains transistor VT1, and in
as a backup power source
A 470 micron capacitor C1 is used. C
With such a capacitor, the information in the cache is
stored for 6-8 hours after opening
turning on the computer's power.             























 The size of the background is the size ("0".
Size /GS Size 62256) Price
For example, A14="0", A15="0", /MREQ="0", etc
Fly D2 in the range of "1".    
  Радиоэлементы указаны те, на которых
была собрана и испытана эта схема.       
  Flying VT1 doesn't look like this
КЗЧ2Б, КЗ102ЕМ и т.п.                  
  Subjects D1, D2 Copyright 1533
и 555.                                 
  Subjects R2, R3, R4 - size 1k.    
  It's a snowflake snowflake
указана на рис. 2.                       
























  Чтобы избежать повреждения информации в
кэше  отключать  питание компьютера жела-
тельно при нажатой кнопке "СБРОС".-----                  
                                         
  Absolutely reliable information about encryption
re designations of microcircuits 62256 are not ours -
elk. KMB2256CLP-7 can be decrypted
so: KM is a company storage device
"SAMSUNG ELEKTRONICS", 62256-static
Memory capacity 32k, C - execution version
(can also be A or B), L - low sweat-
regeneration (if this sign is missing, then
high, if LL - very low consumption
nie), P - DIP housing, 7 - performance
Memory in tens of nanoseconds.                
























                                         
 литература: Справочный лист.            
             radioamator 6`98, стр. 31.