LPT COVOX
(C) KEX
I welcome all readers NICRON'a! If you do
there is no such thing as COVOX, then immediately, take in hand
soldering and Forward! Below is a scheme COVOX'a. Do not worry
nothing terrible here. By the way, this scheme has already been
published in Newspaper ZX-MAGAZIN. You probably already know a
similar scheme for resistors, but this scheme has several
advantages: 1). Small size (no need to solder a bunch of
resistors) 2). Small cost (1000-1500 rubles. Mitino)
Disadvantage: the additional power +5 V
Thus, the scheme COVOX'a made on the basis chip KR 572 PA 1:
November 1915 at
ST0 power
10,240 th
ST1
9
ST2 K
8 P
ST3
May 7
ST4 7
June 2
ST5
5 P
ST6 A
4
ST7 1
12
STROBE
1
+5 V
2
gen.
Signals given to the legs of chips KR 572 PA 1 ∙:
Number of legs Alert
1 +5 at.
2 gen.
3 gen.
4 D7
5 D6
6 D5
7 D4
8 D3
9 D2
10 D1
11 D0
12 STROBE
13 total.
14 +5.
15 Exit
16 No
The whole thing fasten to printer output. Imprint
taken from the chip KR 1533 IR 23. Exit music can be sent
one of two internal amplifiers kanalov.Esli you still have some
problems connecting COVOX'a, please call.
Andrew (KEX)
497-74-66 21:00-00:00
ZX-NET: 095/462.6
