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Text File  |  1994-01-27  |  12.2 KB  |  326 lines
  1.  
  2.  
  3.    GND [ 1][ 2][ 3][ 4][13][25][37][49][61][73][85]
  4.  
  5.    5V  [ 5][ 6]
  6.  
  7.        A20  1 +-------+ 15                       E  1 +-------+ 3
  8.    [56]-------+       |O----                 [50]-----+>      +----
  9.        A21  2 |       | 14                          2 |  1/2  | 4
  10.    [58]-------+       |O----                 RFR -----+  74LS +----
  11.        A22  3 |       | 13                            |  393  | 5
  12.    [57]-------+       |O----         1/6              |       +---- RFD
  13.               |       | 12          74LS04            |  [E2] | 6
  14.               | 74LS  |O----                          |       +--+
  15.               | 138   | 11          1 |\   2          +-------+  |
  16.               |       |O---- ADR* ----| >O---- ADR     +---------+
  17.             6 | [A1]  | 10            |/           +---+  +--------- 5V
  18.        5V ----+       |O----                       |      O 4       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  [34]--------+       +------------- MA0
  153.    A1       5 | 74LS  | 15
  154.   [29]--------+ 153   |O----+
  155.             4 |  or   | 1   |
  156.   RA0 ---+----+ 74LS  |O----+
  157.          |  3 | 253   |     |
  158.          +----+       |    GND
  159.    A11     10 | [C1]  | 9
  160.   [36]--------+       +------------- MA1
  161.    A2      11 |       |
  162.   [27]--------+       |
  163.            12 |       | 2
  164.   RA1 ---+----+       +-------- RCYC
  165.          | 13 |       | 14
  166.          +----+       +-------- MUX*
  167.               +-------+
  168.  
  169.    A12      6 +-------+ 7
  170.   [38]--------+       +------------- MA2
  171.    A3       5 | 74LS  | 15
  172.   [26]--------+ 153   |O----+
  173.             4 |  or   | 1   |
  174.   RA2 ----+---+ 74LS  |O----+
  175.           | 3 | 253   |     |
  176.           +---+       |    GND
  177.    A13     10 | [C2]  | 9
  178.   [39]--------+       +------------- MA3
  179.    A4      11 |       |
  180.   [24]--------+       |
  181.            12 |       | 2
  182.   RA3 ---+----+       +-------- RCYC
  183.          | 13 |       | 14
  184.          +----+       +-------- MUX*
  185.               +-------+
  186.  
  187.    A14      6 +-------+ 7
  188.   [41]--------+       +------------- MA4
  189.    A5       5 | 74LS  | 15
  190.   [21]--------+ 153   |O----+
  191.             4 |  or   | 1   |
  192.   RA4 ---+----+ 74LS  |O----+
  193.          |  3 | 253   |     |
  194.          +----+       |    GND
  195.    A15     10 | [C3]  | 9
  196.   [43]--------+       +------------- MA5
  197.    A6      11 |       |
  198.   [23]--------+       |
  199.            12 |       | 2
  200.   RA5 ---+----+       +-------- RCYC
  201.          | 13 |       | 14
  202.          +----+       +-------- MUX*
  203.               +-------+
  204.  
  205.    A16      6 +-------+ 7
  206.   [45]--------+       +------------- MA6
  207.    A7       5 | 74LS  | 15
  208.   [28]--------+ 153   |O----+
  209.             4 |  or   | 1   |
  210.   RA6 ---+----+ 74LS  |O----+
  211.          |  3 | 253   |     |
  212.          +----+       |    GND
  213.    A17     10 | [C4]  | 9
  214.   [47]--------+       +------------- MA7
  215.    A8      11 |       |
  216.   [30]--------+       |
  217.            12 |       | 2
  218.   RA7 ---+----+       +-------- RCYC
  219.          | 13 |       | 14
  220.          +----+       +-------- MUX*
  221.               +-------+
  222.  
  223.    A18      6 +-------+ 7
  224.   [52]--------+       +------------- MA8
  225.    A9       5 | 74LS  | 15
  226.   [32]--------+ 153   |O----+
  227.             4 |  or   | 1   |
  228.   RA8 ---+----+ 74LS  |O----+
  229.          |  3 | 253   |     |
  230.          +----+       |    GND
  231.            10 | [C5]  | 9
  232.      +--------+       +------------- MA9
  233.      |     11 |       |
  234.      +--------+       |
  235.      |     12 |       | 2
  236.      +--------+       +-------- RCYC
  237.      |     13 |       | 14
  238.      +--------+       +-------- MUX*
  239.      |        +-------+
  240.     GND
  241.  
  242.             2 +-------+ 18
  243.   MA0 --------+       +-------- p5 all memory chips
  244.            17 | 74HC  | 3
  245.   MA1 --------+ 244   +-------- p7
  246.             4 |  or   | 16
  247.   MA2 --------+ Am    +-------- p6
  248.            15 | 2966  | 5
  249.   MA3 --------+       +-------- p12
  250.             6 |       | 14
  251.   MA4 --------+       +-------- p11
  252.            13 |       | 7
  253.   MA5 --------+       +-------- p10
  254.             8 | [D3]  | 12
  255.   MA6 --------+       +-------- p13
  256.            11 |       | 9
  257.   MA7 --------+       +-------- p9
  258.               |       | 1
  259.               |       |O---+
  260.               |       | 19 |
  261.               |       |O---+
  262.               +-------+    |
  263.                           GND
  264.             2 +-------+ 18
  265.  MA8 ---------+       +-------- p1 of all memory chips
  266.            17 | 74HC  | 3
  267.  UCAS --------+ 244   +-------- p15 of rows 1-4
  268.             4 |  or   | 16
  269.  LCAS --------+ Am    +-------- p15 of rows 5-8
  270.            15 | 2966  | 5
  271.  RAS0 --------+       +-------- p4 of rows 1,3,5,7
  272.             6 |       | 14
  273.  RAS1 --------+       +-------- p4 of rows 2,4,6,8
  274.  R/W       13 |       | 7
  275.  [68]---------+       +-------- BRW and p3 of all memory chips
  276.             8 | [D5]  | 12
  277.          +----+       +---
  278.          | 11 |       | 9
  279.          +----+       +---
  280.          |    |       | 1
  281.         GND   |       |O----+
  282.               |       | 19  |
  283.               |       |O----+
  284.               +-------+     |
  285.                            GND
  286.  
  287.  D15       18 +-------+ 2
  288.  [63]---------+       +-------- p2,p14 of E1,E2
  289.  D14       17 | 74LS  | 3 [65]---------+ 245   +-------- p2,p14 of F1,F2
  290.  D13       16 |       | 4
  291.  [67]---------+       +-------- p2,p14 of G1,G2
  292.  D12       15 |       | 5
  293.  [69]---------+       +-------- p2,p14 of H1,H2
  294.  D11       14 |       | 6
  295.  [71]---------+       +-------- p2,p14 of E3,E4
  296.  D10       13 |       | 7
  297.  [76]---------+       +-------- p2,p14 of F3,F4
  298.  D9        12 |       | 8
  299.  [78]---------+       +-------- p2,p14 of G3,G4
  300.  D8        11 |       | 9
  301.  [80]---------+       +-------- p2,p14 of H3,H4
  302.               | [D1]  |
  303.           19  |       | 1
  304.  ADR* -------O|       +-------- BRW
  305.               +-------+
  306.  
  307.  D7        18 +-------+ 2
  308.  [82]---------+       +-------- p2,p14 of E5,E6
  309.  D6        17 |       | 3
  310.  [84]---------+ 74LS  +-------- p2,p14 of F5,F6
  311.  D5        16 | 245   | 4
  312.  [86]---------+       +-------- p2,p14 of G5,G6
  313.  D4        15 |       | 5
  314.  [83]---------+       +-------- p2,p14 of H5,H6
  315.  D3        14 |       | 6
  316.  [81]---------+       +-------- p2,p14 of E7,E8
  317.  D2        13 |       | 7
  318.  [79]---------+       +-------- p2,p14 of F7,F8
  319.  D1        12 | [D7]  | 8
  320.  [77]---------+       +-------- p2,p14 of G7,G8 D0        11 |       | 9
  321.  [75]---------+       +-------- p2,p14 of H7,H8
  322.               |       |
  323.           19  |       | 1
  324.  ADR* -------O|       +-------- BRW
  325.               +-------+
  326.