home *** CD-ROM | disk | FTP | other *** search
/ Fish 'n' More 1 / FishNMoreVol1.bin / more / text_files / newmem&clock / mem.sch < prev    next >
Text File  |  1986-07-03  |  12KB  |  341 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----                RFRQ -----+  74LS +----
  11.     A22     3 |       | 13                            |  393  | 5
  12.    [57]-------+       |O----         1/6              |       +-----+
  13.               |       | 12          74LS04            |  [B2] | 6   |
  14.               | 74LS  |O----                          |       +---- |
  15.               | 138   | 11          1 |\   2          +-------+     |
  16.               |       |O---- ADR* ----| >O---- ADR     +------------+
  17.             6 | [A1]  | 10            |/           +---+  +---------RFRQ*
  18.        5V ----+       |O----                   +---+      O 4
  19.        A23  5 |       | 9            [B3]      |    2 +-------+ 5
  20.    [59]------O|       |O---- SEL*              | 5V---+ 1/2   +-----RFD
  21.             4 |       | 7                      |      | 74LS  |
  22.      GND ----O|       |O----                   |      | 74    |
  23.               +-------+                        |    3 |       | 6
  24.                                                +------+> [B4] |O----
  25.          5                                            +-------+
  26.   ADR------+                                              O 1
  27.          4 +---                                     1/6   +-------- RFRAS*
  28.   AS-------+    \  6                                  74LS04
  29.          2 |     |O---+----------------MCYC*        5 |\  6
  30.   RFC*-----+    /     |    1/3 74LS10         [74]----| >O---- AS
  31.          1 +---       |           [A4]        AS*     |/
  32.   PRCH*----+          | 3,4 +---                       [B3]
  33.        1/2 74LS20     +-----+    \  6
  34.           [A2]            5 |     |O---- RAST
  35.                  RFRAS*-----+    /
  36.                             +---
  37.                                    5V
  38.             11 1/3 74LS10 [A4]     |
  39.      RFD------+---                 O 10
  40.             10|    \  8     12 +-------+ 9
  41.    MCYC*-+----+     |O---------+       +------RFC*
  42.          |   9|    /           | 1/2   |
  43.          +----+---             | 74LS  |
  44.                             11 | 74    | 8
  45.                    CDAC*-------+> [A3] |O-----RCYC
  46.                                +-------+
  47.            13                      O 13
  48.     DAS*-----+ 1/2 74LS20 [A2]     |
  49.            12+---                  |
  50.     ADR*-----+    \  8             |
  51.            10|     |O--------------+-----RFRQ*
  52.       AS-----+    /
  53.             9+---
  54.    PRECH*----+
  55.  
  56.  
  57.                                                             AS
  58.                                                             |
  59.                                                             O 4
  60.                                                       2 +-------+ 5
  61.                                                 MCYC*---+ 1/2   +---- MUX*
  62.                                                         | 74LS  |
  63.                                                         | 74    |
  64.                                                       3 |       | 6
  65.                                                 CDAC*---+> [A3] |O--- MUX
  66.                         4 +-------+ 2                   +-------+
  67.                    AS-----+       +-----                    O 1
  68.                           |       | 3                       |
  69.                           |       |O---- DAS*               |
  70.                         5 |       | 7                       +----5V
  71.                  RFC* ----+ 74SL  +----- RFRAS*             O 10
  72.                           | 175   | 6                12 +-------+ 10
  73.                           |       |O---- RFR     MUX----+ 1/2   +---- CAST
  74.                        12 | [A5]  | 10                  | 74LS  |
  75.               RFRAS* -----+       +----- PRCH*          | 74    |
  76.                           |       | 11           CDAC 11|       | 9
  77.                           |       |O----         [15]+--+> [B4] |O---
  78.                        13 |       | 15               |  +-------+
  79.               CAST -------+       +----- HOLD        |      O 13
  80.                         9 |       | 14               |      +----AS
  81.               CDAC* ------+>      |O----             |
  82.                           +-------+                  |  3 |\  4
  83.                               O 1                    +----| >O----CDAC*
  84.                               +----5V                     |/
  85.                                                             [B3]
  86.  
  87.                   1/4 74125 [D4]
  88.           2 |\ 3
  89.   HOLD -----| >-------[18] XRDY
  90.             |/O
  91.              1|
  92.               |
  93.               +--- ADR*
  94.                            2/6 74LS04 [B3]
  95.                11|\  10                          9 |\  8
  96.   UDS* [72]------| >O------ UDS    LDS* [70]-------| >O------- LDS
  97.                  |/                                |/
  98.  
  99.                          2/4 74LS00 [B1]
  100.            5 +---                             11 +---
  101.   CAST ------+    \  6                CAST ------+    \  8
  102.            4 |     |O-----UCAS*               10 |     |O----- LCAS*
  103.   UDS -------+[B1]/                   LDS -------+[B1]/
  104.              +---                                +---
  105.  
  106.  
  107.            12,13 |\  11   10 +---
  108.   A19 [54]---+---| >O--------+    \  8      13 +---
  109.              |   |/        9 |     |O----------+    \  11
  110.              |       RFR* ---+    /         12 |[B1] |O----- RAS1*
  111.              |               +---      RAST ---+    /
  112.              |                                 +---
  113.              |  3/4 74LS00 [B5]
  114.              |                                 2/4 74LS00
  115.              |             4 +---
  116.              +---------------+    \  6       2 +---
  117.                            5 |     |O----------+[B1]\  3
  118.                      RFR*----+    /          1 |     |O----- RAS0*
  119.                              +---      RAST ---+    /
  120.                                                +---
  121.  
  122.                 13  |\   12
  123.       RFRQ*---------| >O---------RFRQ
  124.                     |/
  125.               1/6 74LS04 [B3]
  126.  
  127.  
  128.           13  +-------+ 11
  129.   RFR--------O|>      +-------- RA0
  130.               | 1/2   | 10
  131.               | 74LS  +-------- RA1
  132.               | 393   | 9
  133.               |       +-------- RA2
  134.            12 | [B2]  | 8
  135.        +------+       +---+---- RA3
  136.        |      +-------+   |
  137.       GND                 |
  138.          +----------------+
  139.          |
  140.          | 1  +-------+ 3
  141.          +---O|>      +-------- RA4
  142.               | 1/2   | 4
  143.               | 74LS  +-------- RA5
  144.               | 393   | 5
  145.               |       +-------- RA6
  146.             2 | [C6]  | 6
  147.        +------+       +---+---- RA7
  148.        |      +-------+   |
  149.       GND                 |
  150.          +----------------+
  151.          |
  152.          |13  +-------+ 11
  153.          +---O|>      +-------- RA8
  154.               | 1/2   | 10
  155.               | 74LS  +--------
  156.               | 393   | 9
  157.               |       +--------
  158.            12 | [C6]  | 8
  159.        +------+       +--------
  160.        |      +-------+
  161.       GND
  162.  
  163.    A10      6 +-------+ 7
  164.   [34]--------+       +------------- MA0
  165.    A1       5 | 74LS  | 15
  166.   [29]--------+ 153   |O----+
  167.             4 |  or   | 1   |
  168.   RA0 ---+----+ 74LS  |O----+
  169.          |  3 | 253   |     |
  170.          +----+       |    GND
  171.    A11     10 | [C1]  | 9
  172.   [36]--------+       +------------- MA1
  173.    A2      11 |       |
  174.   [27]--------+       |
  175.            12 |       | 2
  176.   RA1 ---+----+       +-------- RCYC
  177.          | 13 |       | 14
  178.          +----+       +-------- MUX*
  179.               +-------+
  180.  
  181.    A12      6 +-------+ 7
  182.   [38]--------+       +------------- MA2
  183.    A3       5 | 74LS  | 15
  184.   [26]--------+ 153   |O----+
  185.             4 |  or   | 1   |
  186.   RA2 ----+---+ 74LS  |O----+
  187.           | 3 | 253   |     |
  188.           +---+       |    GND
  189.    A13     10 | [C2]  | 9
  190.   [39]--------+       +------------- MA3
  191.    A4      11 |       |
  192.   [24]--------+       |
  193.            12 |       | 2
  194.   RA3 ---+----+       +-------- RCYC
  195.          | 13 |       | 14
  196.          +----+       +-------- MUX*
  197.               +-------+
  198.  
  199.    A14      6 +-------+ 7
  200.   [41]--------+       +------------- MA4
  201.    A5       5 | 74LS  | 15
  202.   [21]--------+ 153   |O----+
  203.             4 |  or   | 1   |
  204.   RA4 ---+----+ 74LS  |O----+
  205.          |  3 | 253   |     |
  206.          +----+       |    GND
  207.    A15     10 | [C3]  | 9
  208.   [43]--------+       +------------- MA5
  209.    A6      11 |       |
  210.   [23]--------+       |
  211.            12 |       | 2
  212.   RA5 ---+----+       +-------- RCYC
  213.          | 13 |       | 14
  214.          +----+       +-------- MUX*
  215.               +-------+
  216.  
  217.    A16      6 +-------+ 7
  218.   [45]--------+       +------------- MA6
  219.    A7       5 | 74LS  | 15
  220.   [28]--------+ 153   |O----+
  221.             4 |  or   | 1   |
  222.   RA6 ---+----+ 74LS  |O----+
  223.          |  3 | 253   |     |
  224.          +----+       |    GND
  225.    A17     10 | [C4]  | 9
  226.   [47]--------+       +------------- MA7
  227.    A8      11 |       |
  228.   [30]--------+       |
  229.            12 |       | 2
  230.   RA7 ---+----+       +-------- RCYC
  231.          | 13 |       | 14
  232.          +----+       +-------- MUX*
  233.               +-------+
  234.  
  235.    A18      6 +-------+ 7
  236.   [52]--------+       +------------- MA8
  237.    A9       5 | 74LS  | 15
  238.   [32]--------+ 153   |O----+
  239.             4 |  or   | 1   |
  240.   RA8 ---+----+ 74LS  |O----+
  241.          |  3 | 253   |     |
  242.          +----+       |    GND
  243.            10 | [C5]  | 9
  244.      +--------+       +----
  245.      |     11 |       |
  246.      +--------+       |
  247.      |     12 |       | 2
  248.      +--------+       +-------- RCYC
  249.      |     13 |       | 14
  250.      +--------+       +-------- MUX*
  251.      |        +-------+
  252.     GND
  253.  
  254.             2 +-------+ 18
  255.   MA0 --------+       +-------- p5 all memory chips
  256.            17 | 74HC  | 3
  257.   MA1 --------+ 244   +-------- p7
  258.             4 |  or   | 16
  259.   MA2 --------+ Am    +-------- p6
  260.            15 | 2966  | 5
  261.   MA3 --------+       +-------- p12
  262.             6 |       | 14
  263.   MA4 --------+       +-------- p11
  264.            13 |       | 7
  265.   MA5 --------+       +-------- p10
  266.             8 | [D3]  | 12
  267.   MA6 --------+       +-------- p13
  268.            11 |       | 9
  269.   MA7 --------+       +-------- p9
  270.               |       | 1
  271.               |       |O---+
  272.               |       | 19 |
  273.               |       |O---+
  274.               +-------+    |
  275.                           GND
  276.             2 +-------+ 18
  277.  MA8 ---------+       +-------- p1 of all memory chips
  278.            17 | 74HC  | 3
  279.  UCAS*--------+ 244   +-------- p15 of cols 1-4
  280.             4 |  or   | 16
  281.  LCAS*--------+ Am    +-------- p15 of cols 5-8
  282.            15 | 2966  | 5
  283.  RAS0*--------+       +-------- p4 of cols 1,3,5,7
  284.             6 |       | 14
  285.  RAS1*--------+       +-------- p4 of cols 2,4,6,8
  286.  R/W       13 |       | 7
  287.  [68]---------+       +-------- BRW and p3 of all memory chips
  288.             8 | [D5]  | 12
  289.          +----+       +---
  290.          | 11 |       | 9
  291.          +----+       +---
  292.          |    |       | 1
  293.         GND   |       |O----+
  294.               |       | 19  |
  295.               |       |O----+
  296.               +-------+     |
  297.                            GND
  298.  
  299.  D15       18 +-------+ 2
  300.  [63]---------+       +-------- p2,p14 of E1,E2
  301.  D14       17 | 74LS  | 3
  302.  [65]---------+ 245   +-------- p2,p14 of F1,F2
  303.  D13       16 |       | 4
  304.  [67]---------+       +-------- p2,p14 of G1,G2
  305.  D12       15 |       | 5
  306.  [69]---------+       +-------- p2,p14 of H1,H2
  307.  D11       14 |       | 6
  308.  [71]---------+       +-------- p2,p14 of E3,E4
  309.  D10       13 |       | 7
  310.  [76]---------+       +-------- p2,p14 of F3,F4
  311.  D9        12 |       | 8
  312.  [78]---------+       +-------- p2,p14 of G3,G4
  313.  D8        11 |       | 9
  314.  [80]---------+       +-------- p2,p14 of H3,H4
  315.               | [D1]  |
  316.           19  |       | 1
  317.  ADR* -------O|       +-------- BRW
  318.               +-------+
  319.  
  320.  D7        18 +-------+ 2
  321.  [82]---------+       +-------- p2,p14 of E5,E6
  322.  D6        17 |       | 3
  323.  [84]---------+ 74LS  +-------- p2,p14 of F5,F6
  324.  D5        16 | 245   | 4
  325.  [86]---------+       +-------- p2,p14 of G5,G6
  326.  D4        15 |       | 5
  327.  [83]---------+       +-------- p2,p14 of H5,H6
  328.  D3        14 |       | 6
  329.  [81]---------+       +-------- p2,p14 of E7,E8
  330.  D2        13 |       | 7
  331.  [79]---------+       +-------- p2,p14 of F7,F8
  332.  D1        12 | [D7]  | 8
  333.  [77]---------+       +-------- p2,p14 of G7,G8
  334.  D0        11 |       | 9
  335.  [75]---------+       +-------- p2,p14 of H7,H8
  336.               |       |
  337.           19  |       | 1
  338.  ADR* -------O|       +-------- BRW
  339.               +-------+
  340.  
  341.