Cambouis de l'Atari Posted April 27, 2016 Share Posted April 27, 2016 Hello everyone, I'm happy to have finally found a working ntsc 800. I'm a total noob with this particular model ! So by working I mean I was able to get the blue basic screen and to play some cartridges. To check the ram cards I left just 16K inside, and typed ? FRE(0). I got something like 13000. Seems normal to me. Then I plugged the second 16K, and got ~29000. Again, seems normal. Finally plugged the remaining 16K, and now I have "only" 37902. Does that mean that some ram chips are out ? How much free ram should I get ? Thank you for reading Quote Link to comment Share on other sites More sharing options...
Roydea6 Posted April 27, 2016 Share Posted April 27, 2016 37902 for basic cartridge use. with out basic add 8k to 37902 37902+8192 =46094 1 Quote Link to comment Share on other sites More sharing options...
Cambouis de l'Atari Posted April 27, 2016 Author Share Posted April 27, 2016 (edited) So my ram cards are ok ? I was surprised to see it jump from 13000 to 29000 (+16000) with the second card, then only jump +8000 with the third Thank you ! Edited April 27, 2016 by Cambouis de l'Atari Quote Link to comment Share on other sites More sharing options...
Roydea6 Posted April 27, 2016 Share Posted April 27, 2016 The second card must be a 16k card and the other just an 8k card.. Quote Link to comment Share on other sites More sharing options...
BillC Posted April 27, 2016 Share Posted April 27, 2016 So my ram cards are ok ? I was surprised to see it jump from 13000 to 29000 (+16000) with the second card, then only jump +8000 with the third Thank you ! This is because the 8K BASIC cartridge occupies the 40 to 48K region, making this RAM unavailable to BASIC. The second card must be a 16k card and the other just an 8k card.. If the first was an 8K card he wouldn't get ~13K free, most likely some reserved regions, same reason only 37902 is free when 40K(40960 bytes) is available. 2 Quote Link to comment Share on other sites More sharing options...
Cambouis de l'Atari Posted April 27, 2016 Author Share Posted April 27, 2016 My third card is a 16K one (all three are) : Well, if someone can check someday and post his result, I'd be glad ! Quote Link to comment Share on other sites More sharing options...
Rybags Posted April 28, 2016 Share Posted April 28, 2016 You have the right result. To confirm the third card is actually 16K, pull it and the second then replace it into the second slot and recheck FRE(0) without the last slot occupied. 1 Quote Link to comment Share on other sites More sharing options...
Joey Z Posted April 28, 2016 Share Posted April 28, 2016 My third card is a 16K one (all three are) : Well, if someone can check someday and post his result, I'd be glad ! the ~37000 number is totally normal for a 48K system, as described by BillC, you can be pretty sure your RAM cards are working properly, and are all 16K. If you really have doubts, try them one at a time in the first slot, you should get the ~13000 number each time. 1 Quote Link to comment Share on other sites More sharing options...
Cambouis de l'Atari Posted April 28, 2016 Author Share Posted April 28, 2016 Ok I'll do that, thank you everyone ! Quote Link to comment Share on other sites More sharing options...
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