Hellraiser Posted January 12, 2016 Share Posted January 12, 2016 (edited) From the top it looks like any other 65XE. but from the bottom it looks different. Who had thought Atari's were "made" in Argentina. Edited January 12, 2016 by Hellraiser 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 12, 2016 Share Posted January 12, 2016 Hmm... the importer was relabeling them? Quote Link to comment Share on other sites More sharing options...
Kr0tki Posted January 12, 2016 Share Posted January 12, 2016 PAL N? Not only relabeling, they might also have modified the mainboard for the local TV system. Are the connectors any different? Please provide photos of the mainboard. 1 Quote Link to comment Share on other sites More sharing options...
Hellraiser Posted January 13, 2016 Author Share Posted January 13, 2016 The motherboard does have a small modification. PAL N works ok in color on NTSC equipment, on European PAL equipment is only shows the image in B/W. 2 Quote Link to comment Share on other sites More sharing options...
+Stephen Posted January 13, 2016 Share Posted January 13, 2016 The motherboard does have a small modification. MB1.jpgmb2.jpgmb3.jpg PAL N works ok in color on NTSC equipment, on European PAL equipment is only shows the image in B/W. Wow - that's a really cool bit of hardware. Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 13, 2016 Share Posted January 13, 2016 That crystal is 1/5th the PAL N frequency of 3.58205625MHz. Freddie needs a clock 4X the color clock, so that board must produce an overtone of 20X the crystal base frequency. Quote Link to comment Share on other sites More sharing options...
Joey Z Posted January 13, 2016 Share Posted January 13, 2016 That crystal is 1/5th the PAL N frequency of 3.58205625MHz. Freddie needs a clock 4X the color clock, so that board must produce an overtone of 20X the crystal base frequency. looks to me like it's not 1/5, but 2X the PAL N frequency, so it's producing a 2X overtone of the base crystal frequency. 20X would be quite a bit. The crystal is labeled 7164.112 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 13, 2016 Share Posted January 13, 2016 looks to me like it's not 1/5, but 2X the PAL N frequency, so it's producing a 2X overtone of the base crystal frequency. 20X would be quite a bit. The crystal is labeled 7164.112 The problem is, they've replaced the 14.318MHz crystal with that board. Freddie needs a fast clock it can divide down and make RAS and CAS from. Quote Link to comment Share on other sites More sharing options...
Joey Z Posted January 14, 2016 Share Posted January 14, 2016 The problem is, they've replaced the 14.318MHz crystal with that board. Freddie needs a fast clock it can divide down and make RAS and CAS from. right, so they're likely using a harmonic like you suggested, just not the 20th harmonic which would be quite a feat. 1 Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 14, 2016 Share Posted January 14, 2016 All I know is that if that machine produces PAL-N signals, it needs 20x the crystal shown fed into Freddie. Quote Link to comment Share on other sites More sharing options...
Rybags Posted January 14, 2016 Share Posted January 14, 2016 So this would be an NTSC board to begin with? It seems to have the spot where the PAL colourburst crystal would otherwise go. Seems there'd be little point using a PAL board to begin with since the required clocks have a direct relationship. Bryan - why would it need 20x ? The machine looks to be essentially NTSC but with a slightly faster clock. Crystal being used here is slightly over 1/2 what a normal XE has. One thing for sure - what we have here is an overclocked Atari, if only 1.791028125 Mhz vs 1.7897725 MHz for normal NTSC. Grand total of about a 0.07% faster CPU. 1 Quote Link to comment Share on other sites More sharing options...
Joey Z Posted January 14, 2016 Share Posted January 14, 2016 All I know is that if that machine produces PAL-N signals, it needs 20x the crystal shown fed into Freddie. no, not 20x, 2x. that crystal isn't 716.4112KHz, it's 7164.112KHz, otherwise known as 7.164112MHz (or about 1/2 of what is needed as input to FREDDIE) 2 Quote Link to comment Share on other sites More sharing options...
Rybags Posted January 14, 2016 Share Posted January 14, 2016 The addon board looks like a high school science project that barely got a pass mark. 2 Quote Link to comment Share on other sites More sharing options...
Bryan Posted January 14, 2016 Share Posted January 14, 2016 Whoops. I was having a brain fart and reading the crystal wrong. Sorry. Quote Link to comment Share on other sites More sharing options...
Jangle Posted February 15, 2020 Share Posted February 15, 2020 On 1/12/2016 at 12:14 PM, Hellraiser said: From the top it looks like any other 65XE. but from the bottom it looks different. Who had thought Atari's were "made" in Argentina. I have the same one! Is your Atari working? Mine doesn't show any image. Do you know where to begin? I'm new on Atari and this my new little project , so any ideas are welcome. Mine doesn't have that rare board connection and have signs of been repaired some time along (I added zooming pics of that parts) Here are some pics of the board: Quote Link to comment Share on other sites More sharing options...
TGB1718 Posted February 15, 2020 Share Posted February 15, 2020 On 1/12/2016 at 3:14 PM, Hellraiser said: From the top it looks like any other 65XE. but from the bottom it looks different. Who had thought Atari's were "made" in Argentina. I love that bottom label which implies the input voltage to the unit is 220 VAC 50Hz, that would make a nice bang followed by copious amounts of flames and smoke ☠️ 1 Quote Link to comment Share on other sites More sharing options...
Jangle Posted February 15, 2020 Share Posted February 15, 2020 26 minutes ago, TGB1718 said: I love that bottom label which implies the input voltage to the unit is 220 VAC 50Hz, that would make a nice bang followed by copious amounts of flames and smoke ☠️ Why? Argentina use 220v.. 1 Quote Link to comment Share on other sites More sharing options...
Quiver Posted February 15, 2020 Share Posted February 15, 2020 Because the computer uses an external 5v power supply. So, connecting mains voltage, any countries mains voltage, would result in letting the magic smoke out of the machine in spectacular fashion. 1 1 1 Quote Link to comment Share on other sites More sharing options...
Jangle Posted February 15, 2020 Share Posted February 15, 2020 (edited) Could anyone help me with this? 8 hours ago, Jangle said: I have the same one! Is your Atari working? Mine doesn't show any image. Do you know where to begin? I'm new on Atari and this my new little project , so any ideas are welcome. Mine doesn't have that rare board connection and have signs of been repaired some time along (I added zooming pics of that parts) Here are some pics of the board: Could anyone help me with this? Edited February 15, 2020 by Jangle Grammar Quote Link to comment Share on other sites More sharing options...
manterola Posted June 9, 2022 Share Posted June 9, 2022 Now an 800XL made in Argentina. I guess there is no freddy chip in this one. 1 Quote Link to comment Share on other sites More sharing options...
oo7 Posted June 9, 2022 Share Posted June 9, 2022 (edited) This brand seemd to have exclusive SF551 from atari https://atariage.com/forums/topic/336589-never-seen-by-me-xf551-clone/ Edited June 9, 2022 by oo7 Quote Link to comment Share on other sites More sharing options...
oo7 Posted June 9, 2022 Share Posted June 9, 2022 1 hour ago, manterola said: Now an 800XL made in Argentina. I guess there is no freddy chip in this one. i wouldnt bet, that part of the world got machines later and produced later. Anything is possible. Would love to see insde Quote Link to comment Share on other sites More sharing options...
machf Posted June 9, 2022 Share Posted June 9, 2022 Argentina and its infamous PAL-N standard... at least Brazil used PAL-M, which encoded color using PAL but had the same framerate and frame size (60Hz, 525 lines) as regular NTSC (NTSC-M), and the same channel bandwidth (6MHz). PAL-N used PAL color encoding at 50Hz and 625 lines(like regular PAL-B/G), but TV channels used 6MHz bandwidth, like NTSC, not 7MHz like European PAL B/G, which meant the sound carrier was located at a different frequency, as well as the color sub-carrier. No wonder multisystem VCRs were really popular in Argentina... I think no other country in the world used the same combination. Well, except maybe their neighbors Uruguay and Paraguay. Quote Link to comment Share on other sites More sharing options...
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