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Text File  |  1986-06-29  |  13KB  |  332 lines
  1.  
  2.    GND [ 1][ 2][ 3][ 4][13][25][37][49][61][73][85]
  3.  
  4.    5V  [ 5][ 6]
  5.  
  6.        A20  1 +-------+ 15                       E  1 +-------+ 3
  7.    [56]-------+       |O----                 [50]-----+>      +----
  8.        A21  2 |       | 14                          2 |  1/2  | 4
  9.    [58]-------+       |O----                 RFR -----+  74LS +----
  10.        A22  3 |       | 13                            |  393  | 5
  11.    [57]-------+       |O----         1/6              |       +---- RFD
  12.               |       | 12          74LS04            |  [E2] | 6
  13.               | 74LS  |O----                          |       +--+
  14.               | 138   | 11          1 |\   2          +-------+  |
  15.               |       |O---- ADR* ----| >O---- ADR     +---------+
  16.             6 | [A1]  | 10            |/           +---+  +--------- 5V
  17.        5V ----+       |O----                       |      O 4       
  18.        A23  5 |       | 9            [B3]          |2 +-------+ 5
  19.    [59]------O|       |O---- SEL*                  +--+ 1/2   +---- RFRQ
  20.             4 |       | 7                             | 74LS  |
  21.      GND ----O|       |O----                          | 74    |
  22.               +-------+                         AS* 3 |       | 6
  23.                                            [74]--+----+> [B4] |O----
  24.          5                                       |    +-------+
  25.   ADR------+                                     |        O 1
  26.          4 +---                                  |  2/6   +-------- RFRAS*
  27.   AS-------+    \  6                             |     74LS04
  28.          2 |     |O---+                          |  5 |\  6
  29.   RFC*-----+    /     |    1/3 74LS10            +----| >O---- AS
  30.          1 +---       |                               |/
  31.   PRCH*----+          | 3,4 +---
  32.             74LS20    +-----+    \  6              13 |\  12
  33.              [A2]         5 |     |O---- MRAS --------| >O---- MRAS*
  34.         13            +-----+    /                    |/
  35.   RFRQ-----+          |     +---
  36.         12 +---       |                              [B3]
  37.   ADR*-----+    \  8  |     [A4]
  38.         10 |     |O---+                                     +---- 5V
  39.   AS-------+    /                                           O 4
  40.          9 +---                                       2 +-------+ 5
  41.   RFC*-----+                                     MRAS---+ 1/2   +---- MUX
  42.                                                         | 74LS  |
  43.                                                         | 74    |
  44.         11                                            3 |       | 6
  45.   RFD------+---                                 CDAC*---+> [A3] |O---
  46.         10 |    \  8    4 +-------+ 2                   +-------+
  47.   MRAS*----+     |O-------+       +----- RFC*               O 1
  48.          9 |    /         |       | 3                AS-----+
  49.   HOLD*----+---           |       |O----
  50.                         5 |       | 7                       +----5V
  51.                  RFC* ----+ 74SL  +----- RFRAS*             O 10
  52.                           | 175   | 6                12 +-------+ 10
  53.                           |       |O---- RFRAS   MUX----+ 1/2   +---- CAST
  54.                        12 | [A5]  | 10                  | 74LS  |
  55.               RFRAS* -----+       +----- PRCH*          | 74    |
  56.                           |       | 11           CDAC 11|       | 9
  57.                           |       |O----         [15]+--+> [B4] |O---
  58.                        13 |       | 15               |  +-------+
  59.               CAST -------+       +----- HOLD        |      O 13
  60.                         9 |       | 14               |      +----AS
  61.               CDAC* ------+>      |O---- HOLD*       |
  62.                           +-------+                  |  3 |\  4
  63.                               O 1                    +----| >O----CDAC*
  64.           1/4 74LS00          +----5V                     |/
  65.         1 +---                                           [B3]
  66.   ADR ----+    \  3
  67.         2 |[B5] |O---- RCYC
  68.   RFC* ---+    /
  69.           +---
  70.  
  71.                   2/4 74125 [D4]
  72.           2 |\ 3                              5 |\ 6
  73.   HOLD* ----| >----[66] DTACK*      ADR*---+----| >------[18] XRDY
  74.             |/O                            |    |/O
  75.              1|                            |      | 4
  76.               |                            +------+
  77.               +--- ADR*
  78.                            2/6 74LS04 [B3]
  79.                11|\  10                          9 |\  8
  80.   UDS* [72]------| >O------ UDS    LDS* [70]-------| >O------- LDS
  81.                  |/                                |/
  82.            3                                11
  83.   CAST ------+---      2/3 74LS10   CAST ------+---
  84.            4 |    \  6                      10 |    \ 
  85.   UDS -------+[B1] |O----- UCAS*    LDS -------+[B1] |O----- LCAS*
  86.            5 |    /                          9 |    /
  87.   MCYC ------+---                   MCYC ------+---
  88.  
  89.                                             13           
  90.            12,13 |\  11   10 +---        5V----+---
  91.   A19 [54]---+---| >O--------+    \  8       2 |    \  12
  92.              |   |/        9 |     |O----------+[A4] |O----- RAS1*
  93.              |        RFR ---+    /          1 |    /
  94.              |               +---      RAST ---+---
  95.              |                                 
  96.              |  3/4 74LS00 [B5]
  97.              |                              13 
  98.              |             4 +---        5V----+---
  99.              +---------------+    \  6       2 |    \  12
  100.                            5 |     |O----------+[B1] |O----- RAS0*
  101.                       RFR----+    /          1 |    / 
  102.                              +---      RAST ---+---   
  103.  
  104.          12,13|\  11                          10 +---
  105.   MCYC*-------| >O-------- MCYC        MRAS* ----+    \  8
  106.               |/                               9 |     |0---- RAST
  107.                   4/4 74LS00 [B6]      RFRAS* ---+    /
  108.                                                  +---
  109.            1 +---
  110.   RFRQ* -----+    \   3         4 +---
  111.            2 |     |O-----+-------+    \  6
  112.   RFRAS* ----+    /       |     5 |     |O------ RFR*
  113.              +---         +-------+    /
  114.                                   +---
  115.  
  116.  
  117.           13  +-------+ 11
  118.   RFR--------O|>      +-------- RA0
  119.               | 1/2   | 10
  120.               | 74LS  +-------- RA1
  121.               | 393   | 9
  122.               |       +-------- RA2
  123.            12 | [B2]  | 8
  124.        +------+       +---+---- RA3
  125.        |      +-------+   |
  126.       GND                 |
  127.          +----------------+
  128.          |
  129.          | 1  +-------+ 3
  130.          +---O|>      +-------- RA4
  131.               | 1/2   | 4
  132.               | 74LS  +-------- RA5
  133.               | 393   | 5
  134.               |       +-------- RA6
  135.             2 | [C6]  | 6
  136.        +------+       +---+---- RA7
  137.        |      +-------+   |
  138.       GND                 |
  139.          +----------------+
  140.          |
  141.          |13  +-------+ 11
  142.          +---O|>      +-------- RA8
  143.               | 1/2   | 10
  144.               | 74LS  +--------
  145.               | 393   | 9
  146.               |       +--------
  147.            12 | [C6]  | 8
  148.        +------+       +--------
  149.        |      +-------+
  150.       GND
  151.  
  152.    A10      6 +-------+ 7  
  153.   [34]--------+       +------------- MA0
  154.    A1       5 | 74LS  | 15
  155.   [29]--------+ 153   |O----+
  156.             4 |  or   | 1   |
  157.   RA0 ---+----+ 74LS  |O----+
  158.          |  3 | 253   |     |
  159.          +----+       |    GND
  160.    A11     10 | [C1]  | 9
  161.   [36]--------+       +------------- MA1
  162.    A2      11 |       |
  163.   [27]--------+       |
  164.            12 |       | 2
  165.   RA1 ---+----+       +-------- RCYC
  166.          | 13 |       | 14
  167.          +----+       +-------- MUX*
  168.               +-------+
  169.  
  170.    A12      6 +-------+ 7
  171.   [38]--------+       +------------- MA2
  172.    A3       5 | 74LS  | 15
  173.   [26]--------+ 153   |O----+
  174.             4 |  or   | 1   |
  175.   RA2 ----+---+ 74LS  |O----+
  176.           | 3 | 253   |     |
  177.           +---+       |    GND
  178.    A13     10 | [C2]  | 9
  179.   [39]--------+       +------------- MA3
  180.    A4      11 |       |
  181.   [24]--------+       |
  182.            12 |       | 2
  183.   RA3 ---+----+       +-------- RCYC
  184.          | 13 |       | 14
  185.          +----+       +-------- MUX*
  186.               +-------+
  187.  
  188.    A14      6 +-------+ 7
  189.   [41]--------+       +------------- MA4
  190.    A5       5 | 74LS  | 15
  191.   [21]--------+ 153   |O----+
  192.             4 |  or   | 1   |
  193.   RA4 ---+----+ 74LS  |O----+
  194.          |  3 | 253   |     |
  195.          +----+       |    GND
  196.    A15     10 | [C3]  | 9
  197.   [43]--------+       +------------- MA5
  198.    A6      11 |       |
  199.   [23]--------+       |
  200.            12 |       | 2
  201.   RA5 ---+----+       +-------- RCYC
  202.          | 13 |       | 14
  203.          +----+       +-------- MUX*
  204.               +-------+
  205.  
  206.    A16      6 +-------+ 7
  207.   [45]--------+       +------------- MA6
  208.    A7       5 | 74LS  | 15
  209.   [28]--------+ 153   |O----+
  210.             4 |  or   | 1   |
  211.   RA6 ---+----+ 74LS  |O----+
  212.          |  3 | 253   |     |
  213.          +----+       |    GND
  214.    A17     10 | [C4]  | 9
  215.   [47]--------+       +------------- MA7
  216.    A8      11 |       |
  217.   [30]--------+       |
  218.            12 |       | 2
  219.   RA7 ---+----+       +-------- RCYC
  220.          | 13 |       | 14
  221.          +----+       +-------- MUX*
  222.               +-------+
  223.  
  224.    A18      6 +-------+ 7
  225.   [52]--------+       +------------- MA8
  226.    A9       5 | 74LS  | 15
  227.   [32]--------+ 153   |O----+
  228.             4 |  or   | 1   |
  229.   RA8 ---+----+ 74LS  |O----+
  230.          |  3 | 253   |     |
  231.          +----+       |    GND
  232.            10 | [C5]  | 9
  233.      +--------+       +------------- MA9
  234.      |     11 |       |
  235.      +--------+       |
  236.      |     12 |       | 2
  237.      +--------+       +-------- RCYC
  238.      |     13 |       | 14
  239.      +--------+       +-------- MUX*
  240.      |        +-------+
  241.     GND
  242.  
  243.             2 +-------+ 18
  244.   MA0 --------+       +-------- p5 all memory chips
  245.            17 | 74HC  | 3
  246.   MA1 --------+ 244   +-------- p7
  247.             4 |  or   | 16
  248.   MA2 --------+ Am    +-------- p6
  249.            15 | 2966  | 5
  250.   MA3 --------+       +-------- p12
  251.             6 |       | 14
  252.   MA4 --------+       +-------- p11
  253.            13 |       | 7
  254.   MA5 --------+       +-------- p10
  255.             8 | [D3]  | 12
  256.   MA6 --------+       +-------- p13
  257.            11 |       | 9
  258.   MA7 --------+       +-------- p9
  259.               |       | 1
  260.               |       |O---+
  261.               |       | 19 |
  262.               |       |O---+
  263.               +-------+    |
  264.                           GND
  265.             2 +-------+ 18
  266.  MA8 ---------+       +-------- p1 of all memory chips
  267.            17 | 74HC  | 3
  268.  UCAS --------+ 244   +-------- p15 of rows 1-4
  269.             4 |  or   | 16
  270.  LCAS --------+ Am    +-------- p15 of rows 5-8
  271.            15 | 2966  | 5
  272.  RAS0 --------+       +-------- p4 of rows 1,3,5,7
  273.             6 |       | 14
  274.  RAS1 --------+       +-------- p4 of rows 2,4,6,8
  275.  R/W       13 |       | 7
  276.  [68]---------+       +-------- BRW and p3 of all memory chips
  277.             8 | [D5]  | 12
  278.          +----+       +---
  279.          | 11 |       | 9
  280.          +----+       +---
  281.          |    |       | 1
  282.         GND   |       |O----+
  283.               |       | 19  |
  284.               |       |O----+
  285.               +-------+     |
  286.                            GND
  287.  
  288.  D15       18 +-------+ 2
  289.  [63]---------+       +-------- p2,p14 of E1,E2
  290.  D14       17 | 74LS  | 3 
  291.  [65]---------+ 245   +-------- p2,p14 of F1,F2
  292.  D13       16 |       | 4
  293.  [67]---------+       +-------- p2,p14 of G1,G2
  294.  D12       15 |       | 5
  295.  [69]---------+       +-------- p2,p14 of H1,H2
  296.  D11       14 |       | 6
  297.  [71]---------+       +-------- p2,p14 of E3,E4
  298.  D10       13 |       | 7
  299.  [76]---------+       +-------- p2,p14 of F3,F4
  300.  D9        12 |       | 8
  301.  [78]---------+       +-------- p2,p14 of G3,G4
  302.  D8        11 |       | 9
  303.  [80]---------+       +-------- p2,p14 of H3,H4
  304.               | [D1]  |
  305.           19  |       | 1
  306.  ADR* -------O|       +-------- BRW
  307.               +-------+
  308.  
  309.  D7        18 +-------+ 2
  310.  [82]---------+       +-------- p2,p14 of E5,E6
  311.  D6        17 |       | 3
  312.  [84]---------+ 74LS  +-------- p2,p14 of F5,F6
  313.  D5        16 | 245   | 4
  314.  [86]---------+       +-------- p2,p14 of G5,G6
  315.  D4        15 |       | 5
  316.  [83]---------+       +-------- p2,p14 of H5,H6
  317.  D3        14 |       | 6
  318.  [81]---------+       +-------- p2,p14 of E7,E8
  319.  D2        13 |       | 7
  320.  [79]---------+       +-------- p2,p14 of F7,F8
  321.  D1        12 | [D7]  | 8
  322.  [77]---------+       +-------- p2,p14 of G7,G8 
  323.  D0        11 |       | 9
  324.  [75]---------+       +-------- p2,p14 of H7,H8
  325.               |       |
  326.           19  |       | 1
  327.  ADR* -------O|       +-------- BRW
  328.               +-------+
  329.  
  330.  
  331.  
  332.