| Title: | AMIGA NOTES |
| Notice: | Join us in the *NEW* conference - HYDRA::AMIGA_V2 |
| Moderator: | HYDRA::MOORE |
| Created: | Sat Apr 26 1986 |
| Last Modified: | Wed Feb 05 1992 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 5378 |
| Total number of notes: | 38326 |
While looking at adding memory to a 3000 I saw mention of two
types of ram that can be used.i am not talking 1meg or
256 ic's. They mentioned "Page" rams,and/or "static column" ram.
What is the difference,and are there pros,and cons to eather.
bill
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3738.1 | WJG::GUINEAU | Wed May 02 1990 09:48 | 5 | ||
I believe static column drams allow you to maintain the the column address for sequential ram address accesses. This saves memory cycles since you only need to apecify the row address (RAS and CAS stuff) john | |||||
| 3738.2 | Burst mode... | FROCKY::BALZER | Christian Balzer DTN:785-1029 | Thu May 03 1990 08:32 | 12 |
The static column memory is needed if you want to take advantage of the 68030's burst mode. This mode will prefetch the program/data caches much (*) faster than with page mode RAM. However you can't mix the memory models and need 4MB of SCRAM to make the burst mode work. And of course, SCRAM is pretty expensive these days... <CB> (*) I believe it was just one cycle, but since I'm a software weenie w/o access to my docs, take this with a megaton of salt. | |||||