Newsgroup: it.comp.hardware
Titolo: AIUTO - SIMM DRAM FPM - SIMM DRAM EDO - COMPATIBILITA'





E' possibile montare delle EDO al posto delle FTP (con 
controllo di parità) da 72 pin, su una vecchia Motherboard 
486?


 


Il manuale riporta:


 


CHAPTER 1 


INTRODUCTION






1.1 Overview


The EXP8046 is a new chip solution that offers the 
cost-effective system integration for 486 and P24T systems. Besides the standard 
features, the EXP8046 also supports VESA standards and power management features 
for most of advanced CPUs on the market. With the use of UM8002/UM8004 TTL ASIC 
buffer, the TTL components required on the main board are further 
reduced.






1.2 System 
Features


q
 Supports INTEL 
486SX, DX, DX2, DX4,P24T, S-SERIAL, P24D


AMD DX, DX2, DXL.


CYRIX M6, M7, DX2. 


UMC486.


q
 Supports 3 
system states for power saving : STANDBY / SUSPEND / 
ON.


q
 Supports L1/L2 
write back/write through cache feature.


q
 Supports 64KB/ 
128KB/ 256KB cache size.


q
 
Supports 72pin SIM MODULES.


q
 Supports SMI/ 
SMM/ PMU/ APM power controllers. 


q
 Supports 2 
MASTER 32-bit VESA Bus & 4 PCI Bus. 




1.3 System 
Specifications


Processor : INTEL 486DX/SX/DX2/DX4/P24T P24D 486CPU


CYRIX M6/M7/DX2 486CPU


AMD DX/DX2/DXL 486CPU


UMC486 CPU


CPU Clock : 25/33/40/50 MHz CPU


Memory Configuration : 
2MB-128MB


SRAM Configuration : 64K/128K/256K


BIOS Subsystem : PHOENIX BIOS


Additional BIOS feature : Set program Resides in ROM


I/O Subsystem NO. slot : Three 16-bit ISA Bus & Four 32-bit 
PCI Bus & Two 32 bit VESA Local Bus


Dimension : 10.4" 
´
 8.8" , 2/3 Baby AT 
Size


 




2.1 DRAM INSTALLATION




The EXP8046 main board can support 
expanded memory from 2MB to 128MB. Either 256K, 1MB, 2MB, 4MB, 8MB,16MB or 32MB 
SIM DRAM can be used on the EXP8046 motherboard. 


n
 The board layout below shows the locations of the 
DRAM memory banks :




Constrains----SIMM-1 and SIMM-2 must 
be the same type. (if con-exist)


Constrains---SiIMM-3 and SIMM-4 must 
be the same type. (if con-exist)






































SIM1 SIM2 SIM3 SIM4




The DRAM type of SIMM-1/2 type is independent to 
that of SIMM-3/4.














SIMM-1




SIMM-2




GROUP SIZE 1






256kx36 (single)




256kx36 (single)




2MB






1Mx36 (single)




NONE




4MB






NONE




1Mx36 (single)




4MB






1Mx36 (single)




1Mx36 (single)




8MB






1Mx36 (double)




NONE




8MB






NONE




1Mx36 (double)




8MB






1Mx36 (double)




1Mx36 (double)




16MB




 


 


 






2Mx36 (single)




NONE




8MB






NONE




2Mx36 (single)




8MB






2Mx36 (single)




2Mx36 (single)




16MB






2Mx36 (double)




NONE




16MB






NONE




2Mx36 (double)




16MB






2Mx36 (double)




2Mx36 (double)




32MB




 


 


 






4Mx36 (single)




NONE




16MB






NONE




4Mx36 (single)




16MB






4Mx36 (single)




4Mx36 (single)




32MB






4Mx36 (Double)




NONE




32MB






NONE




4Mx36 (Double)




32MB






4Mx36 (Double)




4Mx36 (Double)




64MB


Some illegal examples of the SIMM-1/2 
& SIMM3/4 COMBINATION...


SIMM-1 (SIMM-3)


SIMM-2 
(SIMM-4)


1Mx36 single 1Mx36 double 
(single/double)


1Mx36 double 1Mx36 single 
(double/single)


4Mx36 single 1Mx36 single (4M/1M)


1Mx36 single 4Mx36 single (1M/4M) 


==================================================================












SIMM-3




SIMM-4




GROUP SIZE 2






256kx36 (single)




256kx36 (single)




2MB






1Mx36 (single)




NONE




4MB






NONE




1Mx36 (single)




4MB






1Mx36 (single)




1Mx36 (single)




8MB






1Mx36 (double)




NONE




8MB






NONE




1Mx36 (double)




8MB






1Mx36 (double)




1Mx36 (double)




16MB




 


 


 






2Mx36 (single)




NONE




8MB






NONE




2Mx36 (single)




8MB






2Mx36 (single)




2Mx36 (single)




16MB






2Mx36 (double)




NONE




16MB






NONE




2Mx36 (double)




16MB






2Mx36 (double)




2Mx36 (double)




32MB




 


 


 






4Mx36 (single)




NONE




16MB






NONE




4Mx36 (single)




16MB






4Mx36 (single)




4Mx36 (single)




32MB






4Mx36 (Double)




NONE




32MB






NONE




4Mx36 (Double)




32MB






4Mx36 (Double)




4Mx36 (Double)




64MB




TOTAL RAM SIZE = GROUP SIZE + GROUP SIZE # 
2








NOTE
:
 
The minimum group size of EXP8046 is 2MB (except zero). 
If you use single-sided 256Kx36 SIMMs for EXP8046 you must put two or four SIMMs 
on the motherboard.




=====================================================================


 


 



Ma tu sei matto!!!! Postare 34 kappa di manuale!!!!!!!! Non potevi
semplicemente chiedere la stessa cosa citando il manuale e NON copiandolo
per intero????
Bye!
Wolf