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| • | Commonly known as conventional memory. |
| • | In IBM 5162 documentation and software, IBM refers to this as 'base' memory. |
| • | In the 5162, conventional memory addressed 0 KB to 512 KB, resides on the motherboard in SIMMs S1 and S2. A location diagram is here. Both SIMMs need to be present. If either SIMM fails, the motherboard will appear 'dead' (noting of course, that symptom can have other causes). A diagram showing bit breakdown is here. |
| • | In the 5162, conventional memory addressed 512 KB to 640 KB, resides on the motherboard in the six RAM chips adjacent to the power connector. A location diagram is here. If required, this memory can be disabled via jumper J10. A diagram showing bit breakdown is here. |
| • | Commonly known as extended memory. |
| • | In IBM 5162 documentation and software, IBM refers to this as 'expansion' memory. Do not confuse 'expansion' with 'expanded'. |
| • | In an IBM 5162, 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). |
