IBM 51xx Memory Expansion Card / Quadram / Short
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Introduction

This memory expansion card is from Quadram, namely the short version. As far as I know, there is no documentation for this short card on the Internet. This card is a memory expansion card only.

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IBM 51xx Memory Expansion Card / Quadram / Short
IBM 51xx Memory Expansion Card / Quadram / Short
IBM 51xx Memory Expansion Card / Quadram / Short
IBM 51xx Memory Expansion Card / Quadram / DIP switch

DIP switch settings

I am using the short Quadram memory expansion card in the following RAM configuration:

This installation is only valid for the combination 256+384=640 KByte! Disclaimer: I can make no guarantee that the information is correct.

Notes

The Rampage! and SixPakPremium memory expansion cards from AST have the same settings for the first four DIP switches. Assumption: Here the so-called start address is set; in this case 256 KByte.

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