|•||Commonly known as conventional memory.|
|•||In IBM 5170 documentation and software, IBM refers to this as 'base' memory.|
|•||The 5170 motherboard can be fitted with a maximum of 512 KB of conventional memory. Click here for information on the RAM chips and RAM banks used on the various types of 5170 motherboard.|
|•||If conventional memory between 512 KB and 640 KB is desired, it can only be provided by way of an expansion card.|
|•||Commonly known as extended memory.|
|•||In IBM 5170 documentation and software, IBM refers to this as 'expansion' memory. Do not confuse 'expansion' with 'expanded'.|
|•||In an IBM 5170, conventional memory does NOT have to be at the 640 KB maximim before extended memory is added.|
|•||Rules: Extended memory must start at the 1 MB address, and be contiguous (no gaps).
For example, if you have three 2 MB extended memory cards, the cards would be configured as follows:
CARD #1: Address 1 MB to 3 MB
CARD #2: Address 3 MB to 5 MB
CARD #3: Address 5 MB to 7 MB
If you break any of the two rules, the 5162 will not 'find' all of your RAM.
Click here to see an example of a 4MB Intel InBoard card (providing 2 banks of 2 MB).
|•||Click here to see some possible uses of extended memory in the 5170.|
|•||Click here to see discussion on a possible limitation on the amount of extended memory that can be added.|