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Topic       : Documentation of the CT60
Author      : Didier MEQUIGNON
Version     : Version 2.00 (December 11, 2010)
Subject     : Documentation
Nodes       : 135
Index Size  : 3664
HCP-Version : 3
Compiled on : Atari
@charset    : atarist
@lang       : 
@default    : 
@help       : 
@options    : -i
@width      : 75
View Ref-File10.7  DIMM SDRAM for CT60                                         CT60

The CT60 supports the modern PC100/133 standard SDRAM DIMMs, and the
obsolet/uneeded are not accepted.

GOOD SDRAM DIMMs for CT60

   ∙ PC100 & PC133 CL2.

   ∙ Must be UNBUFFURED type.

   ∙ Must be 64-bits (no parity or ECC = 72 / 80 bits).


     Module   Nbr    Nbr   Chip     RAS   CAS     PAGE    Refresh 
     Config  chips  banks  organiz  Addr  Addr  Lentgh  Rate (uS) 
     64 MB     4      2    4Mx16b    12    8      4 KB     15.625 
     64 MB     8      1    8Mx8b     12    9      8 KB     15.625 
     64 MB     4      1    8Mx16b    12    9      8 KB     15.625 
     128 MB    8      2    8Mx8b     12    9      8 KB     15.625 
     128 MB    4      2    8Mx16b    12    9      8 KB     15.625 
     128 MB    8      1    16Mx8b    12    10    16 KB     15.625 
     128 MB    4      1    16Mx16b   13    9      8 KB     7.8125 
     256 MB    8      2    16Mx8b    12    10    16 KB     15.625 
     256 MB    4      2    16Mx16b   13    9      8 KB     7.8125 
     256 MB    8      1    32Mx8b    13    10    16 KB     7.8125 
     512 MB    8      2    32Mx8b    13    10    16 KB     7.8125 
     512 MB    4      2    32Mx16b   13    10    16 KB     7.8125 


 NOT SUPPORTED SDRAM DIMMs 

   ∙ All DIMM with chips density < 64Mbits : 8MB, 16MB & 32MB DIMMs.
     All DIMMs with 2 logical banks chips = obsolet (CT60 needs 4
     logical banks chips).

   ∙ REGISTERED / BUFFURED DIMMs (generally for Work Stations &
     Servers, not PC).

   ∙ 512 MB DIMM with one physical bank (only 1 side populated).

 REMARK : 

Don't confuse SDRAM banks (2 or 4) with physical banks (1= Single
Size or 2 = Double Size) !

 PERFORMANCES : 

The better system performances is obtained with 16 KB page length
DIMMs.