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Text File  |  1986-05-01  |  4KB  |  67 lines
  1.  
  2.                         ______
  3.        -SSEL           1\ U1a \
  4. sh 1  ----------*-------o\     \ 3                                 -SODL
  5.        -SWRT    |        |  08 |o--------------------------------------- sh 2
  6. sh 1  --------*-|-------o/     /
  7.               | |      2/_____/
  8.               | |
  9.               | |                                          220
  10.               | |        .---------.                 +5<--\/\/\--.
  11.               | |        |    ____1|_____             ______     |
  12.        -SRST  | |        |  3|     /C    | 5        1| U15a \    |
  13. sh 1  --------|-|--------|---|CK  U8a   Q|-----------|       \ 3 |  -RST
  14.         D0    | |        |   |     74    |           |   38  |o--*------->P2-40
  15. [A1]  >-------|-|--------|---|D        /Q|o-    +5<--|       /   |
  16.               | |        |  2|_____/P____| 6        2|______/    |
  17.               | |        |        4|                             |
  18.               | |        |         |                GND<--\/\/\--'
  19.               | |        |    +5<--'                       330
  20.               | `--------|---------.                       220
  21.               |          |         |                 +5<--\/\/\--.
  22.               |          |    ___10|_____             ______     |
  23.         RESET |  11|\ 10 | 11|     /P    | 9        4| U15b \    |
  24. [A25] >-------|----| >o--*---|CK  U8b   Q|-----------|       \ 6 |  -SEL
  25.               | U6e|/ (04)   |     74    |           |   38  |o--*------->P2-44
  26.               |          .---|D        /Q|o-    +5<--|       /   |
  27.               |          | 12|_____/C____| 8        5|______/    |
  28.               |    GND<--'       13|                             |
  29.               |      ______        |                GND<--\/\/\--'
  30.               |    12\ U1d \       |                       330
  31.               *------o\     \ 11   |
  32.        -SBSY  |       |  08  o-----'
  33. sh 2  --------|------o/     /                     GND--> P2-1,3,5,7,9,11,13,
  34.               |    13/_____/                                15,17,19,21,23,25,
  35.               |                                             27,29,31,33,35,37,
  36.               |      ______                                 39,41,43,45,47,49
  37.               |     9\ U1c \
  38.               `------o\     \ 8
  39.        -SRD           |  08 |o--*-------------.
  40. sh 1  ---------------o/     /   |             |
  41.                    10/_____/    |             |
  42.                                 |  .-->+5     |            220
  43.                           .-----'  |          |      +5<--\/\/\--.
  44.                           |   ____4|_____     |       ______     |
  45.                           | 3|     /P    | 5  |     9| U15c \    |
  46.                           `--|CK  U13   Q|----|------|       \ 8 |  -ACK
  47.                  13|\ 12     |     74    |    |      |   38  |o--*------->P2-38
  48.               .----| >o--*---|D        /Q|o-  | +5<--|       /   |
  49.               | U6f|/(04)|  2|_____/C____| 6  |    10|______/    |
  50.               |          |        1|          |                  |
  51.               |          |         |          |     GND<--\/\/\--'
  52.               |          `---------'          |            330
  53.               |                          .----'
  54.               `-------------------.      |    _________
  55.                      ______       |      |  1|         |         ______
  56.        -SREQ        4\ U3b \      |      `---|A   U2   |13    12| U15d \
  57. sh 2  ------------*---\     \ 6   |         3|        Q|-----*--|       \ 11
  58.                   |   |  32 |-----*----------|/CLR     |     |  |   38  |o---.
  59.                   `---/     /               2|         | 4   `--|       /    |
  60.                     5/_____/          +5<----|B  221 /Q|o-    13|______/     |
  61.                                            14|         |                     |
  62.                                .-----)|------|Cext     |       .-------------'
  63.                                |   1000pf  15|         |       |
  64.                   +5<---\/\/\--*-------------|Rext     |       |   READY
  65.                          10K                 |         |       `--------->[B26]
  66.                                              |_________|   Sheet 3 of 4
  67.