I forgot to mention orginally (editd in now) that you can used the 412 card-but only in slot 2. Message #3 Posted by bill platt on, 10:06 p.m., The merge feature enables the user to configure this aspect.
This is on purpose-for some configs, a person doesn't need extra system memory-but does need storage. Putting a card into slot 1 does not automatically merge it. **If you put your 512 kb card into slot 2* it will show up as port 1, 2, 3, etc. At that point, it is no longer port memry-and removing the card is like taking part of the brain out. Merged memory takes the card and 'merges' it with onboard system memory. But you cannot merge anything more than a 128 kb card, and so the 512 will always be port memory. I think you are getting port meory confused with merged memory. Message #2 Posted by bill platt on, 6:40 p.m., One other ? I have is that I get error massege now when I want to add another library to that ram card. I know that on slot # 1 the calculater sees only the first 128KB and cannot use the rest, but no matter if I put the card on #1 or #2 slot,the memory is always 90KB. If I take out the ram card and check the memory, it's still 90 KB. I can access the library and use the programs in the library, but when I check my available memory it's barly over 90KB. I bought a 512KB ram card to expand my memory. Message #1 Posted by sarkiss on, 6:18 p.m. Ram card on HP48GX The Museum of HP Calculators
