IS-DOS

iS-DOS^[1][2] is a disk operating system (DOS) for Soviet/Russian ZX Spectrum clones. iS-DOS was developed in 1990 or 1991, by Iskra Soft, in Leningrad, Soviet Union, now Saint Petersburg, Russia.

iS-DOS

Developer	Iskra Soft
Working state	current
Source model	Closed
Initial release	1990; 35 years ago (1990)
Package manager	None
Platforms	Russian ZX Spectrum clones
Kernel type	Monolithic
Influenced by	TR-DOS
Official website	trd.speccy.cz

It handles floppy disks (double sided, double density), hard disk drives, and CD-ROMs. Maximum iS-DOS disk partitioning size on a hard disk is 16 MiB.

Unlike TR-DOS, iS-DOS is resident in random-access memory (RAM), and thus reduces the amount of memory available for user programs.

Versions

iS-DOS Chic^[2] is a version developed for the Nemo KAY.^[3] It provides more memory for user programs.

TASiS^[2], based on iS-DOS Chic, is a modern version developed by NedoPC for the ATM Turbo 2+ in 2006,^[4][5] supports the enhanced text mode and larger memory of that model.

Distributors

• Slot Ltd. (Moscow) distributed iS-DOS in Moscow and regions in 1990s, and issued paper books.
• Nemo (Saint Petersburg) distributed iS-DOS in ex-USSR until 2004, and issued Open Letters electronic press.
• iS-DOS Support Team (Saratov Oblast) distributes iS-DOS in ex-USSR and issues iS-Files electronic press.
• NedoPC distributes TASiS as freeware.

Books

• Картавцев И.Ю, Самыловский С.В., Криштопа С.В. "iS-DOS. Руководство пользователя". IskraSoft, Slot, С-Пб, Москва, 1993, 128 стр.
• Криштопа С.В. "Операционная система IS-DOS для ZX-SPECTRUM. Руководство программиста". "IskraSoft" С-Пб, "Slot" Москва, 1994, 84 стр.

See also

• TR-DOS
• CP/M
• DISCiPLE
• MB02
• ESX-DOS
• DNA OS
• Kay 1024
• ATM Turbo 2+
• Scorpion ZS-256