Tempest Posted March 18, 2020 Share Posted March 18, 2020 Weird! I never knew about OS 255 (man that sounds cool!) Quote Link to comment Share on other sites More sharing options...
luckybuck Posted March 18, 2020 Share Posted March 18, 2020 That is why we raised the agent Mulder site: https://atariwiki.org/wiki/Wiki.jsp?page=Rarity 10 There are still big things to discover, if one can remover one of truth protective layers: from 0:30 on... For example: •) From The Atari Accountant Series just: CX402: Accounts Receivable System (4 SSDD Diskettes) CX403: Inventory Control System (5 SSDD Diskettes) •) Atari The Dow Jones Investment Evaluator Atari Dow Jones Investment Evaluator CX8124 Atari Dow Jones Investment Evaluator CX8125 Atari Dow Jones Investment Evaluator CX8127 The software must be out there in the galaxy somewhere... 2 Quote Link to comment Share on other sites More sharing options...
ClausB Posted March 19, 2020 Share Posted March 19, 2020 The truth is out there. Quote Link to comment Share on other sites More sharing options...
Jeeshman Posted March 21, 2020 Share Posted March 21, 2020 On 3/8/2020 at 3:31 PM, Colleton said: Here are pics of the boards. Hope they show what you want to see. RAMCRAM! I had one of these in my 800. It was one of the cheaper ways to get to 48k back in 1981, when the 800's only came with 16k installed. 2 Quote Link to comment Share on other sites More sharing options...
Colleton Posted March 21, 2020 Author Share Posted March 21, 2020 21 hours ago, Jeeshman said: RAMCRAM! I had one of these in my 800. It was one of the cheaper ways to get to 48k back in 1981, when the 800's only came with 16k installed. Nice. I'd never heard of the card before I bought this 800. I think that this RAMCRAM card has some bad RAM on it. The computer fails to boot about half the time with this card installed. I get a black, cream colored, green, yellow (with beeping) or red screen when it fails to boot. With this card removed the machine boots every time. For now I have 3 16K ram cards installed in the computer and it's working perfectly. I have the ram chips to diagnose and repair the RAMCRAM card, but from what I can see the only way to disassemble the card to get at the chips is to puncture the logo sticker in two places to get at the screws underneath. I don't really want to do that. Quote Link to comment Share on other sites More sharing options...
ClausB Posted March 22, 2020 Share Posted March 22, 2020 (edited) Cut a cross with a sharp razor blade over each screw hole so you can cover the screws again later. I bought a RAMCRAM for my 400 in 1981. Later I got another one and upgraded it to 128K for my 800. Edited March 22, 2020 by ClausB 1 Quote Link to comment Share on other sites More sharing options...
luckybuck Posted March 22, 2020 Share Posted March 22, 2020 Hi Claus, Sorry for asking the greenhorn question, please see my avatar logo, but how did you: ' Later I got another one and upgraded it to 128K for my 800. ' ? Thank you in advance. Quote Link to comment Share on other sites More sharing options...
Colleton Posted March 22, 2020 Author Share Posted March 22, 2020 1 hour ago, ClausB said: Cut a cross with a sharp razor blade over each screw hole so you can cover the screws again later. I think that's about the best way forward, I just hate to do it. Thanks! Quote Link to comment Share on other sites More sharing options...
BillC Posted March 22, 2020 Share Posted March 22, 2020 (edited) 2 hours ago, Colleton said: I think that's about the best way forward, I just hate to do it. Thanks! Are you certain the screws are under the label. I have a similar board, the AXLON 128K RAMDISK, the screws on it are on the side opposite the label. I removed them and the back panel and have access to the component side of the circuit board. On my board the label looks and feels like a thin piece of sheet metal rather than plastic or paper, and even has a small dent in it. If the screws are under the label you could try softening the glue with a hair drier, this may allow you to remove the label without damage. I have used this method to soften the glue when removing labels to reuse a cardboard box, those labels were destroyed in the process but the AXLON label appears much sturdier. Edited March 22, 2020 by BillC Quote Link to comment Share on other sites More sharing options...
Colleton Posted March 22, 2020 Author Share Posted March 22, 2020 9 hours ago, BillC said: Are you certain the screws are under the label. Yes. There are screws on both sides of the board packaging that attach to metal tubes running through the center of the board. One set of screws is under the label, the other is accessible. You need to be able to work both sets of screws at once to loosen them. I've tried using a small hemostat to hold the tubes while I turn the accessible screws, but there isn't enough room to get a good grip. Quote Link to comment Share on other sites More sharing options...
BillC Posted March 22, 2020 Share Posted March 22, 2020 5 hours ago, Colleton said: Yes. There are screws on both sides of the board packaging that attach to metal tubes running through the center of the board. One set of screws is under the label, the other is accessible. You need to be able to work both sets of screws at once to loosen them. I've tried using a small hemostat to hold the tubes while I turn the accessible screws, but there isn't enough room to get a good grip. , I took a closer look at my board, it appears what I though was a dent in the label is directly over one of the screws, which indicates the label is more flexible than I thought. Quote Link to comment Share on other sites More sharing options...
ClausB Posted April 11, 2020 Share Posted April 11, 2020 On 3/11/2020 at 11:32 AM, mytek said: The Germans used it as a rocket fuel for the Messerschmitt Me 163 Komet Rocket Plane... Nice demo (about 42 minutes in) of the use of H2O2 in rocketry: This was done in the V2 and its descendants, the US Redstone (Mercury) and the Russian R-7 (Sputnik, Vostok, Soyuz). If you watch the whole video you'll see actual V2 parts, recovered from impact sites and chicken farms. 2 Quote Link to comment Share on other sites More sharing options...
luckybuck Posted April 11, 2020 Share Posted April 11, 2020 (edited) Will do so Claus, promised, a must for me, of course, due to my education. Wernher did used low pressure, today high pressure is used. If you can exchange O2 through fluoride, you are flying way faster. But the birds in Florida won't like it... But: propulsion based on the kickback principle, brings us to moon, maybe with radiation damage to mars, but not very much further... Therefore, we have a need for field propulsion powered by energy out of the quantum vacuum... But honestly, do you really think mankind is ready for this? 2011, half a century ago after Chernobyl, mankind has proven not to be able to cope with nuclear fission! Fusion even way beyond this! C-19 has clear shown again, we only can make it, when working together. The last one man work in science was the theory of relativity, 115 years ago... Even in Atari: where would we be now, without your help for the community? Happy Easter to all. Edited April 11, 2020 by luckybuck Quote Link to comment Share on other sites More sharing options...
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