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Text File  |  1992-06-29  |  13KB  |  327 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.        +------+       +----,88iJ       =      *iiiiiiijJ      [
  149.  
  150.    dd      ' *iiiiiiij`'` 
  151.   fdiiiiiiiij`      *iiiiiiiiiiiii`Pd
  152.    d`      %`= 'e` = $eJ  f,]iiiiiiiij`$ef`  =iiiijJ            % =  ;v   = $`  =
  153.   d )iijiiiij`'e` =iiiijJ         |  3 | 253   |     |
  154.          +----+       |    GND
  155.    A11     10 | [C1]  | 9
  156.   [36]--------+       +------------- MA1
  157.    A2      11 |       |
  158.   [27]--------+       |
  159.            12 |       | 2
  160.   RA1 ---+----+       +-------- RCYC
  161.          | 13 |       | 14
  162.          +----+       +-------- MUX*
  163.               +-------+
  164.  
  165.    A12      6 +-------+ 7
  166.   [38]--------+       +------------- MA2
  167.    A3       5 | 74LS  | 15
  168.   [26]--------+ 153   |O----+
  169.             4 |  or   | 1   |
  170.   RA2 ----+---+ 74LS  |O----+
  171.           | 3 | 253   |     |
  172.           +---+       |    GND
  173.    A13     10 | [C2]  | 9
  174.   [39]--------+       +------------- MA3
  175.    A4      11 |       |
  176.   [24]--------+       |
  177.            12 |       | 2
  178.   RA3 ---+----+       +-------- RCYC
  179.          | 13 |       | 14
  180.          +----+       +-------- MUX*
  181.               +-------+
  182.  
  183.    A14      6 +-------+ 7
  184.   [41]--------+       +------------- MA4
  185.    A5       5 | 74LS  | 15
  186.   [21]--------+ 153   |O----+
  187.             4 |  or   | 1   |
  188.   RA4 ---+----+ 74LS  |O----+
  189.          |  3 | 253   |     |
  190.          +----+       |    GND
  191.    A15     10 | [C3]  | 9
  192.   [43]--------+       +------------- MA5
  193.    A6      11 |       |
  194.   [23]--------+       |
  195.            12 |       | 2
  196.   RA5 ---+----+       +-------- RCYC
  197.          | 13 |       | 14
  198.          +----+       +-------- MUX*
  199.               +-------+
  200.  
  201.    A16      6 +-------+ 7
  202.   [45]--------+       +------------- MA6
  203.    A7       5 | 74LS  | 15
  204.   [28]--------+ 153   |O----+
  205.             4 |  or   | 1   |
  206.   RA6 ---+----+ 74LS  |O----+
  207.          |  3 | 253   |     |
  208.          +----+       |    GND
  209.    A17     10 | [C4]  | 9
  210.   [47]--------+       +------------- MA7
  211.    A8      11 |       |
  212.   [30]--------+       |
  213.            12 |       | 2
  214.   RA7 ---+----+       +-------- RCYC
  215.          | 13 |       | 14
  216.          +----+       +-------- MUX*
  217.               +-------+
  218.  
  219.    A18      6 +-------+ 7
  220.   [52]--------+       +------------- MA8
  221.    A9       5 | 74LS  | 15
  222.   [32]--------+ 153   |O----+
  223.             4 |  or   | 1   |
  224.   RA8 ---+----+ 74LS  |O----+
  225.          |  3 | 253   |     |
  226.          +----+       |    GND
  227.            10 | [C5]  | 9
  228.      +--------+       +------------- MA9
  229.      |     11 |       |
  230.      +--------+       |
  231.      |     12 |       | 2
  232.      +--------+       +-------- RCYC
  233.      |     13 |       | 14
  234.      +--------+       +-------- MUX*
  235.      |        +-------+
  236.     GND
  237.  
  238.             2 +-------+ 18
  239.   MA0 --------+       +-------- p5 all memory chips
  240.            17 | 74HC  | 3
  241.   MA1 --------+ 244   +-------- p7
  242.             4 |  or   | 16
  243.   MA2 --------+ Am    +-------- p6
  244.            15 | 2966  | 5
  245.   MA3 --------+       +-------- p12
  246.             6 |       | 14
  247.   MA4 --------+       +-------- p11
  248.            13 |       | 7
  249.   MA5 --------+       +-------- p10
  250.             8 | [D3]  | 12
  251.   MA6 --------+       +-------- p13
  252.            11 |       | 9
  253.   MA7 --------+       +-------- p9
  254.               |       | 1
  255.               |       |O---+
  256.               |       | 19 |
  257.               |       |O---+
  258.               +-------+    |
  259.                           GND
  260.             2 +-------+ 18
  261.  MA8 ---------+       +-------- p1 of all memory chips
  262.            17 | 74HC  | 3
  263.  UCAS --------+ 244   +-------- p15 of rows 1-4
  264.             4 |  or   | 16
  265.  LCAS --------+ Am    +-------- p15 of rows 5-8
  266.            15 | 2966  | 5
  267.  RAS0 --------+       +-------- p4 of rows 1,3,5,7
  268.             6 |       | 14
  269.  RAS1 --------+       +-------- p4 of rows 2,4,6,8
  270.  R/W       13 |       | 7
  271.  [68]---------+       +-------- BRW and p3 of all memory chips
  272.             8 | [D5]  | 12
  273.          +----+       +---
  274.          | 11 |       | 9
  275.          +----+       +---
  276.          |    |       | 1
  277.         GND   |       |O----+
  278.               |       | 19  |
  279.               |       |O----+
  280.               +-------+     |
  281.                            GND
  282.  
  283.  D15       18 +-------+ 2
  284.  [63]---------+       +-------- p2,p14 of E1,E2
  285.  D14       17 | 74LS  | 3 
  286.  [65]---------+ 245   +-------- p2,p14 of F1,F2
  287.  D13       16 |       | 4
  288.  [67]---------+       +-------- p2,p14 of G1,G2
  289.  D12       15 |       | 5
  290.  [69]---------+       +-------- p2,p14 of H1,H2
  291.  D11       14 |       | 6
  292.  [71]---------+       +-------- p2,p14 of E3,E4
  293.  D10       13 |       | 7
  294.  [76]---------+       +-------- p2,p14 of F3,F4
  295.  D9        12 |       | 8
  296.  [78]---------+       +-------- p2,p14 of G3,G4
  297.  D8        11 |       | 9
  298.  [80]---------+       +-------- p2,p14 of H3,H4
  299.               | [D1]  |
  300.           19  |       | 1
  301.  ADR* -------O|       +-------- BRW
  302.               +-------+
  303.  
  304.  D7        18 +-------+ 2
  305.  [82]---------+       +-------- p2,p14 of E5,E6
  306.  D6        17 |       | 3
  307.  [84]---------+ 74LS  +-------- p2,p14 of F5,F6
  308.  D5        16 | 245   | 4
  309.  [86]---------+       +-------- p2,p14 of G5,G6
  310.  D4        15 |       | 5
  311.  [83]---------+       +-------- p2,p14 of H5,H6
  312.  D3        14 |       | 6
  313.  [81]---------+       +-------- p2,p14 of E7,E8
  314.  D2        13 |       | 7
  315.  [79]---------+       +-------- p2,p14 of F7,F8
  316.  D1        12 | [D7]  | 8
  317.  [77]---------+       +-------- p2,p14 of G7,G8 
  318.  D0        11 |       | 9
  319.  [75]---------+       +-------- p2,p14 of H7,H8
  320.               |       |
  321.           19  |       | 1
  322.  ADR* -------O|       +-------- BRW
  323.               +-------+
  324.  
  325.  
  326.  
  327.