wasssup1990
Solid State Member
- Messages
- 7
I found this site that is dedicated to hardware, I've being wanting to ask this question for a long time so could someone please correct me if im wrong. I've put the [How to write to memory] and [How to Read from memory] in step by step tasks in the order i think a computer does both of these things. Remember im not interested in how DIMM, DRAM or any other ram does the read and write tasks. I only interested in how SIMM ram does the job OK, so please correct me if I'm wrong.
How to write to memory:
Set CAS0 and RAS0 HIGH.
Understand that DQ1-DQ8 will know be active.
Set address 0 0 0 0 0 0 0 0 0 0 0 1 (First memory Byte).
Set WE LOW to write.
Send data Byte Through DQ1-DQ8
Stop data being sent.
Set address 0 0 0 0 0 0 0 0 0 0 0 0
Set WE HIGH (idle mode) default mode when not in use.)
Set CAS0 and RAS0 LOW.
end
How to Read from memory:
Set CAS0 and RAS0 HIGH.
Understand that DQ1-DQ8 will know be active.
Set address 0 0 0 0 0 0 0 0 0 0 0 1 (First memory Byte).
WE is set as default HIGH to Read.
Expect data to come out from DQ1-DQ8.
Set address 0 0 0 0 0 0 0 0 0 0 0 0
Set CAS0 and RAS0 LOW.
end
Who ever i think gives a good response or tells me something i don't know about SIMM ram will get a response to one of your postes from me. Remember you reply to me, i reply to you, if you meet the requirments of a good response to this message.
Thanks in advance!
How to write to memory:
Set CAS0 and RAS0 HIGH.
Understand that DQ1-DQ8 will know be active.
Set address 0 0 0 0 0 0 0 0 0 0 0 1 (First memory Byte).
Set WE LOW to write.
Send data Byte Through DQ1-DQ8
Stop data being sent.
Set address 0 0 0 0 0 0 0 0 0 0 0 0
Set WE HIGH (idle mode) default mode when not in use.)
Set CAS0 and RAS0 LOW.
end
How to Read from memory:
Set CAS0 and RAS0 HIGH.
Understand that DQ1-DQ8 will know be active.
Set address 0 0 0 0 0 0 0 0 0 0 0 1 (First memory Byte).
WE is set as default HIGH to Read.
Expect data to come out from DQ1-DQ8.
Set address 0 0 0 0 0 0 0 0 0 0 0 0
Set CAS0 and RAS0 LOW.
end
Who ever i think gives a good response or tells me something i don't know about SIMM ram will get a response to one of your postes from me. Remember you reply to me, i reply to you, if you meet the requirments of a good response to this message.
Thanks in advance!
