Modems Spectrum'e. (C) 1998 Dismaster
__________________________________________ By modern standards,
the computer hopeless in the network - not the computer.
Preimuschestvasetey obvious - this e-mail, and access to a
wealth of informa-tion, and the latest news and another
multi-IDE. Practice has shown that the ZX-Spectrum can easily
be run as a networked machine-Ny (ZXNet network in Moscow and
St. Petersburg) sFIDO-like structure of networks. Currently
used by Spec Truman modems can be divided into dvegruppy: -
modems, designed specifically for the ZX, such as CDOS, Vicomm,
XTR-modem and to others.
- Standard Hayes-compatible modems,
used on other platforms
max.
Modems in the first group, created in
conditions of our legendary telephone lines, very often it is
easy to operate, where Hayes-am is just not enough signal
strength to work with some of them implemented automatic number
identification, and finally they are relatively cheap in price.
These shortcomings must be attributed that
the entire process of preparing data for transmission, error
checking during transmission, it is necessary to perform the
computer itself, which entails a relatively low speed
connection (up to 4000 baud) and selects almost all the
processor time to work to the modem.
Hayes-compatible modems for Spectrum
suit almost any, except
those without error correction and
which Plug'n'Play.
The presence of these modems of its own processor and
internal memory does possible to transfer data in parallel with
your computer, and error correction protects the data
transferred from They almost 100%, and data compression
protocols can speed up the transfer to two hundred percent!
Since Hayes-modems have their own interrupt and do not take
up the CPU time for data, it becomes possible
the creation of dynamic games with
modem, such as "Black Crow" or
"DOOM":)
Some modems have special commands to control sensitivity and
output level, and individual devices can be automatically
adjust these settings to the optimal
mode when connected, and it ochenchasto
helps to bad telephone lines.
Everything else, the use of
Hayes-modem provides access to a large
Total existing BBS on other
platforms, because Any Hayes-modem can
connect with anyone, regardless of the type and
speed of the computer and the modem itself, because all the
communication protocol standard.
In addition, using special software, you can become user
directly FidoNet (and some already have).
It is said that Hayes-modems are too expensive for the
average user. However, certain brands of modems (typically
those that not amenable to upgrade) may be sold
at reduced prices, and for $ 30 .. $ 40 can be
find quite a decent speed modem
14400 baud, even with extra features (FAX / VOICE).
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