Technodrome 1 - diagram Connecting a HAYES-compatible modem to the ZS Scorpion and finalizing the SCORPIO scheme.

 ──── Technodrome 1 ────

      The best option, of course, is
but, if you have Scorpion 256, green board
and SMUC (IBM peripheral controller). Then
turning on the haes modem (modem using
which you can connect to IBM-station-
mi) comes down to setting up chaos according to the instructions
username (which is required
must be included with purchase!!!), to
installing haes into the appropriate connector
on SMUC and connecting to a telephone modem
line (for some types of modems,
for example Sportster USRobotics, it is necessary
connecting additional power).
      After doing such simple
operations can be configured by Melon and immediately
call the station.

      If you don’t have SMUC, urgently
buy or do what is described below
same.

 Connecting HAYES-compatible
                   modem


      It may be useful to someone, I repeat
connection diagram for internal Hayes-cov-
compatible modem to the ZX-Spectrum computer.


 Modem coordination board with Scorpion


/RD  12┌──┐
─────────────────┤1 │11 /IOR
A4  9┌──┐ 13│ ├─────────
────────┤1 │8┌───┤ │  /IOW
/IORQ 10│ ├─┤ └──┘┌──────
────────┤  │ │  1┌──┐  │
        └──┘ └───┤1 │3 │     1┌─┬──┐
/WR             2│  ├──┤     ─┤R│  │5
─────────────────┤  │  │     2├─┤  ├┐
A11              └──┘ ┌│──────┤D│  ││
──────────────────────┘│     3├─┤  ││
                       └──────┤C│  ││
/RESET                       4├─┤  ││
──────────────────────────────┤S│  ││
        ┌──┐                  └─┴──┘│
/IORQ4  │1 │                        │
────────┤  O──┐                     │
        │  │  │                     │
        └──┘  │                     │
              │4┌──┐                │
              └─┤1 │6  /NMI         │
               5│  ├────────        │
             ┌──┤  │                │
             │  └──┘                │
             └──────────────────────┘

    В схеме использованы: ЛЛ1
                          ТМ2
                          ЛH1

           >- номеp контакта на системной
              шине / название сигнала

           -> название  сигнала / pазъема
              модема

 выводы микpосхем:  7 - земля
                   : 14 - + 5 v


  Теперь разберем распайку ibm слота...

A1   ----        B1   GND
A2    D7         B2   RESET
A3    D6         B3   +5V
A4    D5         B4   ----
A5    D4         B5   -5V
A6    D3         B6   ----
A7    D2         B7   -12V
A8    D1         B8   ----
A9    D0         B9   +12V
A10  ----        B10  GND
A11  GND         B11  ----
A12  ----        B12  ----
A13  ----        B13  /IOW
A14  ----        B14  /IOR
A15  ----        B15  ----
A16  ----        B16  ----
A17  ----        B17  ----
A18  ----        B18  ----
A19  ----        B19  ----
A20  ----        B20  ----
A21  ┐           B21  ----
A22  │           B22  ----
A23  │           B23  ----
A24  │           B24  /IORQ4
A25  │           B25  ----
A26  │           B26  ----
A27  │           B27  ----
A28  ┘           B28  ----
A29  A10         B29  +5V
A30  A9          B30  ----
A31  A8          B31  GND



      скоpпион           модем
    ┌──────┬───┐      ┌───┬──────┐
    │A 8   │b26│----> │a31│ A 0  │
    │A 9   │a27│----> │a30│ A 1  │
    │A10   │b27│----> │a29│ A 2  │
    │D 0   │b6 │----> │a9 │ D 0  │
    │D 1   │b7 │----> │a8 │ D 1  │
    │D 2   │b8 │----> ├a7 │ D 2  │
    │D 3   │b11│----> │a6 │ D 3  │
    │D 4   │b12│----> │a5 │ D 4  │
    │D 5   │b10│----> │a4 │ D 5  │
    │D 6   │b9 │----> │a3 │ D 6  │
    │D 7   │b3 │----> │a2 │ D 7  │
    │      │   │      │a28│ A 3  │ ─┐
    │      │   │      │a27│ A 4  │  │ HА
    │      │   │      │a26│ A 5  │  │+5v
    │      │   │      │a25│ A 6  │  │чеpез
    │      │   │      │a24│ A 7  │  │3-10k
    │      │   │      │a23│ A 8  │  │
    │      │   │      │a22│ A 9  │  │
    │      │   │      │a21│ A10  │ ─┘
    │      │   │      │a11│ AEN  │ ─┐на
    │ +5v  │a3 │----> │b3 │ +5v  │  │землю
--->│ +12v │a17│----> │b9 │ +12v │
--->│ -12v │a14│----> │b7 │ -12v │
    │ GND  │a30│----> │b1 │ GND  │
    │ GND  │b30│----> │b31│ GND  │
    │RESET │a20│- на  │   │      │
    │ RD   │b18│-     │   │      │
    │ A4   │a24│- п   │   │      │
    │ IORQ │b17│- л  -│b2 │ RESET│
    │ WR   │b19│- а  -│b14│ IOR  │
    │ A11  │a28│- т  -│b13│ IOW  │
--->│ NMI  │b23│- y  -│b24│ IORQ4│
    └──────┴───┘      └───┴──────┘
     сигнал                 сигнал

  --->  подвести сигнал на системнyю шинy.

    Кабель  соединяющий  системный  pазъем
Scorpion'а с платой согласования с запаен-
ным  на  ней pазъемом модема (слот) должен
быть не длиннее 25 см.

               ПОДСКАЗКА
           по выбоpy модема

             ОБЯЗАТЕЛЬHО!!!
           на pазъеме модема
          должны быть задейст-
         вованы только yказан-New contact numbers.

          If you use and
        other contacts, modem
          may NOT work.

    Refinement of the SCORPIO scheme


D55 ┌────┐
                    │ │
       cut │ │
      6│ │
         >──┬──x───┬┤ │
            │ ┌──┐3││ │
            │1│ ├─┘│ │
        A4 └─┤ │ └────┘
         >────┤2 │
 to Z80 └──┘  DD 555LI1


 Z80 ┌────┐34  m/s 555LI1
 │ │->A4  solder on the mole rat,
 cut  │ │  next to the system
  17│ │  connector
 >──┬──x───┬┤ │
    │ ┌──┐6│││
    │4│ ├─┘│ │
    └─┤ │ └────┘
  ┌───┤5 │
  │ └──┘ to the system connector
 └──────> NMI/b23


 It remains to make a few notes.

      Turn on the signals of slot A21...A28
Therefore, you need to submit log "1", hanging
they each have a resistor from 1 to 15 kOhm. B
Spectrum needs to tear off the /nmi pin
on the Z-80 and apply to it with the above
schemes. Also in ZX you need to use
firmware with a corrected byte corresponding to
for nmi processing. For example, at 2.95 pro-
shivka shadow Service - monitor for speed-
peony this has already been done.

      The spec needs at least memory
128 KByte. Supply voltages shown
the circuit does not necessarily have to contain
vat.  The same applies to unspecified sig-
nalam slot. We must look in every con-
in any case. On pin B2 of the connector you need
we need to submit an inverted reset, then
I mean, you need one more inverted element
tora.  Sometimes you have to pull it up to +5V
signal /IORQ4 It is also necessary to block
Select ports that intersect with the specified ones.
Jumpers are installed on the modem itself
on COM1 IORQ4.

--------------------------------------------------------------

      Well, that seems to be all. Prog under is-dos(terminal) request from the author of the diagram (Mic-
hael Kondratyev, 2:5030/362.1)

                    Mikhail Kondratyev



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