almerasr Posted August 1, 2009 Share Posted August 1, 2009 Hi, anybody knows whats my ATARI has? To load another games I press the RESET and don´t run anymore... black screen, no sound, nothing... only the red led... If anybody knows, teel me. Sorry my english. Thanks Nuno M Quote Link to comment Share on other sites More sharing options...
1050 Posted August 1, 2009 Share Posted August 1, 2009 Nobody can know for sure at this point, but I suspect that your power supply is kaput and that might have ruined your computer for you. So you must first test the voltage coming out of the power supply. It must be exactly 5 volts in order to be counted as a good power supply. Let us know if your system passes this first test. Quote Link to comment Share on other sites More sharing options...
spookt Posted August 1, 2009 Share Posted August 1, 2009 Could be as simple as a sticky reset key. If the key is stuck down (or the contacts on the mylar are stuck together) the machine probably will not boot. Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 1, 2009 Author Share Posted August 1, 2009 Nobody can know for sure at this point, but I suspect that your power supply is kaput and that might have ruined your computer for you. So you must first test the voltage coming out of the power supply. It must be exactly 5 volts in order to be counted as a good power supply. Let us know if your system passes this first test. Hi, thanks for your answer. About power supply its ok. I have 5V in all chips... apparently everything is running but the systme don´t run... When I pressed RESET, probably one of the processor or other processors may have been damaged or the ROM ... I don´t know but thanks anyway Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 1, 2009 Author Share Posted August 1, 2009 Could be as simple as a sticky reset key. If the key is stuck down (or the contacts on the mylar are stuck together) the machine probably will not boot. Hi, the keyboard is all ok, since this computer works fine without the keyboard, I took it to try and nothing ... died ... I think that was the OS ROM. I will continue to search. thanks! Quote Link to comment Share on other sites More sharing options...
+skr Posted August 1, 2009 Share Posted August 1, 2009 Could be as simple as a sticky reset key. If the key is stuck down (or the contacts on the mylar are stuck together) the machine probably will not boot. Hi, the keyboard is all ok, since this computer works fine without the keyboard, I took it to try and nothing ... died ... I think that was the OS ROM. I will continue to search. thanks! Are your chips socketed? If yes, perhaps one ore more have loosened. Especially the OS and the BASIC. Remember waht the ABBUC guys always say: An ATARI never dies. It only goes to sleep sometimes. Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 1, 2009 Author Share Posted August 1, 2009 Could be as simple as a sticky reset key. If the key is stuck down (or the contacts on the mylar are stuck together) the machine probably will not boot. Hi, the keyboard is all ok, since this computer works fine without the keyboard, I took it to try and nothing ... died ... I think that was the OS ROM. I will continue to search. thanks! Are your chips socketed? If yes, perhaps one ore more have loosened. Especially the OS and the BASIC. Remember waht the ABBUC guys always say: An ATARI never dies. It only goes to sleep sometimes. Hi, all chips are welded to the PCB, has no sockets, So I think it was the OS ROM Yes, ATARI never dies but I have this ATARI at 25 year ago and it's normal that happens. Do you know where can I find spares for it? Thanks for the help Quote Link to comment Share on other sites More sharing options...
+skr Posted August 1, 2009 Share Posted August 1, 2009 Do you know where can I find spares for it?Thanks for the help Yes: Here and at the german ABBUC-Forum (most of the people there also speak english). If you need a BASIC and a BASIC: I could give you one of each, but they are from a 800 XL. I am not sure, if they will do for the 65XE. Another possibility: Ask for EPROMS. I have different OSs in my machines. Some people are able (make a new thread and ask for it) to do that and you can replace your OS and BASIC chip with the EPROMS. Quote Link to comment Share on other sites More sharing options...
+skr Posted August 1, 2009 Share Posted August 1, 2009 Do you know where can I find spares for it?Thanks for the help Yes: Here and at the german ABBUC-Forum (most of the people there also speak english). If you need a BASIC and a BASIC: I could give you one of each, but they are from a 800 XL. I am not sure, if they will do for the 65XE. Another possibility: Ask for EPROMS. I have different OSs in my machines. Some people are able (make a new thread and ask for it) to do that and you can replace your OS and BASIC chip with the EPROMS. Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 2, 2009 Author Share Posted August 2, 2009 Do you know where can I find spares for it?Thanks for the help Yes: Here and at the german ABBUC-Forum (most of the people there also speak english). If you need a BASIC and a BASIC: I could give you one of each, but they are from a 800 XL. I am not sure, if they will do for the 65XE. Another possibility: Ask for EPROMS. I have different OSs in my machines. Some people are able (make a new thread and ask for it) to do that and you can replace your OS and BASIC chip with the EPROMS. The reference of my OS ROM: NCR 23128-30 M450086 8502A C061598B ATARI 1984 Reference BASIC rom: NCR 2364-30 M450374 8505A C024947A ATARI 1984 Your chips in 800XL are equal? About EPROMS, my dad works with electonics devices and he has a eproms programmer. I just need the files to program. Do you know where can I find the OS and BASIC files to program? In ABBUC I don´t find anything about this. Thanks for all. Nuno Quote Link to comment Share on other sites More sharing options...
BigBen Posted August 3, 2009 Share Posted August 3, 2009 You can find the Basic and OS here BigBen Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 4, 2009 Author Share Posted August 4, 2009 Do you know where can I find spares for it?Thanks for the help Yes: Here and at the german ABBUC-Forum (most of the people there also speak english). If you need a BASIC and a BASIC: I could give you one of each, but they are from a 800 XL. I am not sure, if they will do for the 65XE. Another possibility: Ask for EPROMS. I have different OSs in my machines. Some people are able (make a new thread and ask for it) to do that and you can replace your OS and BASIC chip with the EPROMS. The reference of my OS ROM: NCR 23128-30 M450086 8502A C061598B ATARI 1984 Reference BASIC rom: NCR 2364-30 M450374 8505A C024947A ATARI 1984 Your chips in 800XL are equal? About EPROMS, my dad works with electonics devices and he has a eproms programmer. I just need the files to program. Do you know where can I find the OS and BASIC files to program? In ABBUC I don´t find anything about this. Thanks for all. Nuno Whats the correct EPROMS to record the OS ROM and BASIC? Thanks Nuno Quote Link to comment Share on other sites More sharing options...
re-atari Posted August 4, 2009 Share Posted August 4, 2009 Whats the correct EPROMS to record the OS ROM and BASIC? A 27128 (16Kb) is a direct replacement for the OS Rom. BASIC is 8Kb but it's in a 24-pin Rom that's not quite pin-compatible with a 2764. You'll need to make an adapter socket if you want to use BASIC in an eprom. I posted the instructions to make such an adapter about a year ago, search this forum and ye will find. re-atari Quote Link to comment Share on other sites More sharing options...
Urchlay Posted August 5, 2009 Share Posted August 5, 2009 BASIC is 8Kb but it's in a 24-pin Rom that's not quite pin-compatible with a 2764. You'll need to make an adapter socket if you want to use BASIC in an eprom. I posted the instructions to make such an adapter about a year ago, search this forum and ye will find. Hmmm, is this the same ROM that's in a BASIC cartridge? It's probably easier to find or buy a BASIC cart for cheap and cannibalize it, if it'll work. Quote Link to comment Share on other sites More sharing options...
lotharek Posted August 5, 2009 Share Posted August 5, 2009 ihmo one of memory chip died...that would be the first place to investigate Quote Link to comment Share on other sites More sharing options...
MEtalGuy66 Posted August 5, 2009 Share Posted August 5, 2009 Yeah. especially if it's the 8 (64kx1) chip model.. The Micron (MT) ram they used from the factory totally sucks.. If it's the 2 (64k x 4) chip model, the memory chips should be decent. Quote Link to comment Share on other sites More sharing options...
almerasr Posted August 5, 2009 Author Share Posted August 5, 2009 Yeah. especially if it's the 8 (64kx1) chip model.. The Micron (MT) ram they used from the factory totally sucks.. If it's the 2 (64k x 4) chip model, the memory chips should be decent. Hi, my ATARI has 8 RAM chips. I suppose that each has 8k. 8x8=64k. A Ram in short circuit not let the system boot. I remove one by one to see if it starts but nothing... I put the OS ROM and the BASIC ROM in a Programmer REad/Write Eproms and the chips are ok, no errors! Good to me! So, next step I will change 6502C Procc. It's this that drives all others and nothing works if damaged! I think... I don´t find anything more... All components has 5V, capacitors, resistors, other chips, everything seems well... but don´t work. So next step is change the main processor. I do not know what to do more... Thanks for the help! (Sorry my english) Quote Link to comment Share on other sites More sharing options...
Urchlay Posted August 5, 2009 Share Posted August 5, 2009 Yeah. especially if it's the 8 (64kx1) chip model.. The Micron (MT) ram they used from the factory totally sucks.. If it's the 2 (64k x 4) chip model, the memory chips should be decent. Hi, my ATARI has 8 RAM chips. I suppose that each has 8k. 8x8=64k. A Ram in short circuit not let the system boot. I remove one by one to see if it starts but nothing... It doesn't quite work that way: each chip is 64K x 1 bit. You need all 8 of them working, the system will not boot with any missing or bad chips. Each byte of RAM is split across all 8 chips, so if one chip were bad/missing, the machine wouldn't be able to pass its self-test (probably wouldn't get as far as being able to even run the self-test). If you're looking for replacement RAM, you might have a hard time finding the 64Kx1 chips. You can substitute 256Kx1 chips instead (they're pin-compatible, and I've used them in an unexpanded 800XL in place of the original RAM with no issues). The part number for the 256K chip is 41256, and you can sometimes salvage them from old (8086 and 286-era) PC hardware. Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted August 5, 2009 Share Posted August 5, 2009 Hmmm, is this the same ROM that's in a BASIC cartridge? It's probably easier to find or buy a BASIC cart for cheap and cannibalize it, if it'll work. Hmm, this question seems to be unanswered (or I did not see the answer here) - and yet I have almost the same question: Can I replace the Basic ROM in my computer (Rev. B) with the Basic ROM of a cart (Rev. A or C) ?!? -Andreas Koch. Quote Link to comment Share on other sites More sharing options...
Roydea6 Posted August 6, 2009 Share Posted August 6, 2009 check this thread: http://www.atariage.com/forums/index.php?s...;hl=basic+eprom I have done this, and it works. Quote Link to comment Share on other sites More sharing options...
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