Iron - COVOX 251. What is it and what is it eaten with.

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(C) DJ.CHEMIST.

Kovoks. What is it and what is it eaten with.

 Kovox is a lot of resistors... or a device for reproducing
denition of digital eight-bit audio. COVOX itself consists of non-
how many resistors or from a digital multiplexer, connected
go to the printer data (on the Spectrum). (The printer ports are
switched on due to the lack of need to collect decryption logic
port). Most programs do not provide for sampling
and COVOX because Spectum has an almost established interface port
CEUTROUIX (it is connected to port 251) which is where most
users are connected to COVOX. On some computers,
The printers do not match the standard CEUTROUIX. (For example
on Cheboksary-made Delta computers it is located
on the 31st, and on Scorpios on the 221st). To create COVOX on
Assemble this circuit using a standard CEUTROUIX.


                   CDO -CD7 connect to COVOX.

 CDЧ ───────┐
  D4 ──────┐│
  D3 ─────┐││
 CDЗ ────┐│││
 CD2 ───┐││││
  D2 ──┐│││││
  D1 ─┐││││││
 CD1┐│││││││
 +5В┐││││││││┌───────────────────────┐
    ││││││││││                       │
 20┌┴┴┴┴┴┴┴┴┴┴┐11      14┌┴┴┴┴┴┴┴┐8  │
   │   ИР 22  │          │  ЛН2  │   │
  1└┬┬┬┬┬┬┬┬┬┬┘10       1└┬┬┬┬┬┬┬┘7  │
    ││││││││││            ││         │
    ┴││││││││┴            ││         │
 CDO ┘│││││││             ││         │
  D0 ─┘││││││     A2─────┐│└─────────┘
  D7 ──┘│││││     WR──┐  ││
 CD7 ───┘││││         │  ││
 CDб ────┘│││         │  ││
  D6 ─────┘││  IORQ ─┐│  ││
  D5 ──────┘│        ││┌┐││
 CDS ───────┘      1┌┴┴┴┴┴┴┴┐7
                    │ ЛЛ1   │
                  14└┬┬┬┬┬┬┬┘8

Питание к микросхемам ЛН2 и ЛЛ1 подводится стандартно.

         Схема COVOX'а.

            R1            10 МКФ
     CD7 ───███───┬─────┬───┤├─── OUT
            R1    █ R2  │ 0.01 МКФ
     CDб ───███───┤     └───┤├──┐
            R1    █ R2          │
     CDS ───███───┤             ┴
            R1    █ R2
     CDЧ ───███───┤      R1 - 15 KOM
            R1    █ R2   R2 - 7.5 KOM
     CDЗ ───███───┤
            R1    █ R2
     CD2 ───███───┤
            R1    █ R2
     CD1 ───███───┤
            R1    █ R2
     CDO ───███───┤
                  █ R2
                  │
                  │
                  ┴

На компьютерах Дельта подключение микросхемы ИР 22 удобнее осу-
ществлять как показано на рисунке. Микросхему  ИР 22  на  плате
компьютера Дельта можно припаять поверх другой ИР 22 находящей-
ся наboard. With this connection, IR 22 legs of the COVOX chip
are connected parallel to the legs of the computer chip(1,3,4,7,
8,10,13,14,17,18,20), the signal from the inverter is soldered onto leg 11,
and COVOX is soldered onto the remaining legs.(2.5,b,9,12,15,1b,19)