Разнообразно приветствую тебя, Konstantin!
02 Апреля 2024, Konstantin Denisov писАл к All следующее:
01 апреля в истории Фидо
1985. Программа Fido запущена на многозадачных версиях ОС семейства PC-DOS. Цена "бюджетного" варианта такой ОС - $160, более дорогая -
$495.
Что за "многозадачные PC-DOS"?
Concurrent DOS и PC-MOS - вpоде бы,не пpодyкция IBM,
а y IBM была TopView?
Из англоязычной Википедии (ниже - гуглоперевод на русский):
https://en.wikipedia.org/wiki/IBM_PC_DOS
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Over the history of IBM PC DOS, various versions were developed by IBM and Microsoft. By the time PC DOS 3.0 was completed, IBM had a team of developers covering the full OS. At that point in time, either IBM or Microsoft completely developed versions of IBM PC DOS going forward. By 1985 the joint development agreement (JDA) between IBM and Microsoft for the development of PC DOS had each company giving the other company a completely developed version. Most of the time branded versions were identical, but there were some cases in which each of the companies made minor modifications to their version of DOS. In the fall of 1984, IBM gave all the source code and documentation of the internally developed IBM TopView for DOS to Microsoft so that Microsoft could more fully understand how to develop an object-oriented operating environment, overlapping windows (for its development of Windows 2.0) and multitasking.
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В истории IBM PC DOS были разработаны различные версии, разработанные IBM и Microsoft. К тому времени, когда PC DOS 3.0 был завершен, у IBM была команда разработчиков, покрывающих полную ОС. В этот момент либо IBM, либо Microsoft полностью разработали версии IBM PC DOS в будущем. К 1985 году в совместном соглашении о разработке (JDA) между IBM и Microsoft для разработки PC DOS каждая компания предоставила другой компании полностью разработанную версию. Большую часть времени фирменные версии были идентичными, но были некоторые случаи, когда каждая из компаний внесла незначительные изменения в свою версию DOS. Осенью 1984 года IBM дал весь исходный код и документацию внутренне разработанной IBM TopView для DOS для Microsoft, чтобы Microsoft могла более полно понять, как разработать объектно-ориентированную рабочую среду, перекрывая Windows (для его разработки Windows 2.0 ) и многозадачность.
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А вот что про это было написано в Fidonews за 01-Apr-1985.
https://vtda.org/pubs/FIDONEWS/FNEWS208.ZIP
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NEWS
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From FIDO #66 Orange County, California
UPGRADE YOUR FidoBBS SYSTEM TO
MULTI-TASKING FOR LESS THAN $160
OR TO
MULTI-TASKING AND MULTI-USER FOR LESS THAN $255.
By Robert Bosche', Jr.
Co-SYSOP Fido #66 (714) 642-4408 - 24-Hours
If you are like most SYSOPS, you probably run your Fido BBS
during the hours you're not using the computer for local
tasks. One computer is not just enough to handle FIDO BBS 24
hours a day and run your other programs at the same time.
Until recently we found ourselves in the same situation, and
disappointed many of our faithful callers while we burned
the midnight oil. We now run Fido #66 on a 24-Hour basis on
our only computer and plan to add a second Fido to the same
computer in the near future.
During working hours we run other programs such as R:Base
4000, Microrim's XRW, Wordstar, 1-2-3, PC-TALK III, and
various editors and DOS files in the `foreground' while Fido
#66 runs in the `background', on the same computer.
To say there is no noticeable degradation would be
stretching the truth, but I will say that the degradation is
acceptable, even with three tasks/programs running at the
same time.
Over the past three months, we tested a number of multi-
tasking/multi-user packages for compatibility with Fido and
other popular packages, as well as for speed, degradation,
other quirks, and finally cost. We can recommend two of
them, one for about $160, and one for about $495. Most users
can get by well with the $160 package. At these prices, it
certainly beats buying another computer for the present. I
will explain the differences later. Let's call them p$160
and p$495 for short.
P$160 turns your PC-DOS 2.10 & 3.x (not MS-DOS) compatible
computer into a true timesharing system running up to 9 PC-
DOS compatible programs concurrently.
Up to 9 separate jobs can be run at the same time, but this
really depends on the CPU and RAM demands of each program
you run. For our purposes, we find 2 or 3 jobs to be the
reasonable maximum for our own application mix.
You don't have to bring FIDO down any more to run other
programs, or get out of your wordprocesssor to copy a file
in another directory, just switch back and forth between
jobs. It's like switching between computers.
With p$160 the keyboard and screen can be assigned to any
job, and all other jobs continue to run unattended.
P$160 requires no additional hardware. An additional $90
buys the Multi-user version of the package. It uses one
standard serial port for each additional user (NOT BAD for a
MULTIUSER SYSTEM). Remote users can be connected either by
modem or direct via a null modem cable.
Direct connection yields transmission rates up to 19.2K
baud. RAM size may need to be increased according to program
requirements. We recommend 640K, which is the maximum
directly accessable memory for the IBM-PC/XT & Compatable.
P$160 is simple to install, and requires only a one-line
addition to your AUTOEXEC.BAT to allocate memory to each
job's partition. Once booted, any program compatible with
IBM PC-DOS may be loaded.
Simple keystrokes can then cause any job/program to appear
on the foreground screen, while the other jobs/programs
continue to run in the background partition.
Additional p$160 parameters allow you to assign processing
priorities/time to specific jobs according to your needs.
We have been and continue to work with the developers of
this package to enhance its capabilities even further.
P$495 surpasses p$160 in a few respects which may be
requisites of your system. P$495 allows use of many IBM
compatible computers running under PC-DOS in a multitasking
and multiuser environment.
P$495 also allows you to implement a number of background
routines which actually control the way certain `unfriendly'
software packages manipulate video RAM. The unfriendly
software then performs normally from the user's vantage
point, but in such a way that it cannot interfere with or
overwrite allocated portions of video RAM. The best example
of an unfriendly program is one that manipulates screen
memory.
P$495 supports remote access to DOS, so you can run programs
from a remote location.
P$495 also supports a memory expansion card which allows DOS
to direct-access up to 4 megabytes of memory.
Think about the capabilities and use of these package(s).
The 4 megabyte memory expansion card and multi-port (4 to 8)
serial cards are also available.
Please give us a call for additional information. We'll be
more than happy to work with you to resolve any questions
and supply any of the required software or hardware at very
reasonable prices.
For your information, Fido #66 runs on a Compaq portable
packed with 640K, 2 DSDD floppies, a 33.5 meg hard disk, a
ProModem 1200, 3 serial ports, a Kimtron (PC lookalike)
terminal, a Heathkit/Zenith terminal, a Citizen MSP-15
printer and a few other `put-togethers'.
Bob Bosche'
The ASC/US Group
The ASC/US Computer Price Club
Fido #66: (714) 642-4408 24-Hours
Voice lines: (714) 642-7949 10:00AM - 6:00PM PST
(714) 642-2582 " " "
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Всяческих благ. Искренне Ваш, Vladimir Fyodorov, эсквайр.
... Коровоизлияние в мозг
--- GoldED+/OSX 1.1.5-b20240309
* Origin: Esquire Station (2:6035/3.1)