1 | <?php |
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2 | $seiten_id = 'ibm1130'; |
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3 | $version = '$Id: ibm1130.php 271 2013-04-23 19:23:24Z heribert $'; |
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4 | $titel = 'IBM 1130 Computing System'; |
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5 | |
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6 | require "../../lib/technikum29.php"; |
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7 | ?> |
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8 | |
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9 | <h2 id="ibm1130"><b>IBM 1130</b> Computing System</h2> |
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10 | |
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11 | <div class="box center clear-after"> |
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12 | <img src="/shared/photos/rechnertechnik/ibm-3register.jpg" width="859" height="186" /> |
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13 | </div> |
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14 | <p>Since December 2013, we own a very nice and also quite interesting "Electronic Computing System" by IBM. This type was delivered for the first time in 1965 and intended for use by scientists, engineers, and mathematicians.<br> |
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15 | The "AMPEX TMZ" (digital tape memory system) is connected to the equipment, so we are urgently looking for Manuals (schematics).<br> |
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16 | There is much to report about, but in first place the optical and electronical restoration of the Computer have to be realized.<br> This section will be continued within a short time.</p> |
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17 | |
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18 | <div class="box center clear-after"> |
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19 | <img src="/shared/photos/rechnertechnik/ibm-1130.jpg" alt="IBM 1130 Elektronische Rechenanlage" width="860" height="606" /> |
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20 | <div class="bildtext"> |
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21 | <p><b>IBM 1130</b></p> |
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22 | </div> |
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23 | <br><br> |
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24 | |
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25 | <div class="desc-left borderless no-copyright"> |
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26 | <a class="popup" href="/shared/photos/rechnertechnik/facit4000.jpg"> |
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27 | <img src="/shared/photos/rechnertechnik/facit4000.jpg" alt="Lochstreifengeräte" width="352" height="137" /> |
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28 | </a> |
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29 | <p class="small"><a class="popup" href="/shared/photos/rechnertechnik/facit4000.jpg"><b>Facit paper tape devices</b></a>:<br> |
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30 | Rewinder type 4015, punch type 4060, reader type 4001 and punch electronics type 5104 |
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31 | </div> |
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32 | |
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33 | <p>The picture on the left hand side shows the paper tape devices of the Facit 4000 series that were connected to the system. |
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34 | <div class="clear"></div> |
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35 | |
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36 | |
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37 | <h3 id="blog-ibm">Restauration-Blog</h3> |
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38 | <p class="small"> |
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39 | As we did for the restoration of the UNIVAC 9200, we will again have a repair |
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40 | blog for the IBM 1130. The main problem here is due to the rather special |
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41 | technology employed by IBM, the so-called SLT (Solid Logic Technology). The |
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42 | circuit elements are small ceramic tiles with discrete transistors, resistors |
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43 | etc. which thus form an equivalent to an integrated circuit. The problem is |
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44 | that these elements and boards are no longer available. So the very advanced |
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45 | technology of IBM makes it hard to maintain these old machines today.<br> |
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46 | In the same time other companies like BULL still used discrete transistors mounted |
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47 | on large circuit boards. Worlds colliding... Such a restoration process is |
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48 | extremely time consuming and cumbersome and maybe we wouldn't start it at all |
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49 | if we knew in advance how many bugs there are to resolve.</p><br> |
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50 | |
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51 | |
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52 | <div class="desc-left"> |
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53 | <a class="popup" href="/shared/photos/rechnertechnik/ibm-1130-board.jpg"> |
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54 | <img src="/shared/photos/rechnertechnik/ibm-1130-board.jpg" alt="Modul der IBM1130" width="195" height="247" /></a> |
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55 | <p class="small">Typical <a class="popup" href="/shared/photos/rechnertechnik/ibm-1130-board.jpg"><b>SLT-module</b></a>. |
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56 | The IBM circuit diagram was printed on high-speed printers. |
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57 | <br>Disadvantage: heavy to read because all logic elements look identical.</p></div> |
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58 | |
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59 | <p class="small"> |
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60 | |
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61 | <b>Dec.2013:</b> Cleaning the machine and removing disintegrated foam rubber mats.<br><br> |
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62 | |
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63 | <b>30.12.2013:</b> Due to curiosity we already invested much time. After installing |
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64 | 32 kB memory (with a word length of 16 bits) the first power on was attempted: No magic smoke escaping - a big success! Nevertheless, the console typewriter banged its type head |
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65 | repeatedly at the left margin so we switched off quickly.<br><br> |
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66 | |
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67 | <b>2.1.2014:</b> Removal of the console typewriter for easier maintenance. After |
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68 | three hours the bug was found: Four small bars, moved by springs, were |
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69 | immovable due to old oil which had solidified. Correction was simple due to |
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70 | some W40.<br><br> |
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71 | |
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72 | <b>4.1.2014:</b> Since the console typewriter is now working flawless, we |
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73 | concentrated on writing data to the memory system. At first sight, the memory |
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74 | is working a "bit".<br><br> |
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75 | |
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76 | <b>6.1.2014:</b> After we have learned how to deposit data to the memory and read it |
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77 | back, it became clear that there are at least two problems: 1: Depositing |
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78 | values in consecutive memory addresses fails, and 2: two out of 15 bits are |
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79 | missing at all, causing parity errors.<br> |
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80 | <br><br> |
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81 | |
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82 | <b>8.1.2014:</b> The second error was found rather quickly: One "head connector" was |
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83 | missing from the second memory module. We fail to understand how such an item |
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84 | can get lost. The first error is harder to find.<br><br> |
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85 | |
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86 | <b>11.1.2014:</b> The first error turns out to be a show-stopper: The address |
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87 | generation is working fine but the driver for the address lines 11, 12, 13, |
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88 | and 14 is missing since there is no board 7342! Somehow this has been removed |
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89 | from the machine! That is the worst case for every restoration project! A |
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90 | closer inspection revealed, that a second board, 4628, is also missing from |
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91 | the printer control. <br><br> |
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92 | |
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93 | </small> |
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94 | <br> |
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95 | |
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96 | <p><a class="go" href="/en/devices/ibm1130-blog.php">IBM 1130 Reparation blog continuation</a> |
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97 | |
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98 | |
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