Date: Sat, 25 Oct 2003 12:10:10 -0500 From: PhotoEngineering <[EMAIL PROTECTED]> Subject: Amount of memory addressable??
I am upgrading the memory in my Libretto and am a little bugged. According to the specs the maximum it can address is 64 meg however it has a 64 bit data width which means it can go over 4 gigs. 2^64=18,446,744,073,709,551,616 addressable. The following are the Libretto EDO control lines which I am not to familiar with. They have to do with refresh and addressing and such rot. Can someone explain what each does and which is needed for SDRAM? I am going to replace the EDO ram in my 110CT with SDRAM and am curious as to what the differances are. Thanks.
Pin No. Signal name I/O Pin No. Signal Name I/O
23 CAS0; 001 O 24 CAS4; 011 O 25 CAS1; 001 O 26 CAS5; 011 O 115 CAS2; 011 O 116 CAS6; 011 O 117 CAS3; 011 O 118 CAS7; 011 O
29 MA00B; 101 O 30 MA03; 111 O 31 MA01B; 101 O 32 MA04; 111 O 33 MA02; 111 O 34 MA05; 111 O 103 MA06; 111 O 104 MA07; 111 O 105 MA08; 111 O 106 MA11; 111 O 109 MA09; 111 O 110 MA00C; 101 O 111 MA10; 111 O 112 MA01C; 101 O
66 WED; 001 O 67 WEC; 001 O
69 RAS2; 001 O 71 RAS3; 001 O
John [EMAIL PROTECTED]
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