RETROTRONICS - New in the collection - Floppy disk drive ISOT 5071E / ES 5074 Technical Description and Table of Signals

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New in the collection : Floppy disk drive ISOT 5071E / ES 5074 Technical Description and Table of Signals

on 2018/7/8 16:00:00

As part of the documentation for Bulgarian 8 inch floppy disk drive model ISOT 5071E / ES 5074 we add C13.060.216 TO (Technical Description) and C13.060.216 TS (Table of Signals).

on 2018/6/17 4:30:00

Some time ago we added a big lot of 'ISOT' archive documentation to our collection. We will scan and make it available on the web site.

on 2018/4/8 16:30:00

Recently we acquired a brochure of Institute for Microprocessor Instruments and Systems in russian and english language, printed in 1500 units by Bulgarreklama.

on 2018/4/5 13:10:00

For our collection, in addition to the hardware, software and manuals, sometimes we are very happy to acquire original advertising materials - leaflets, brochures and catalogs. Distributed at technical fairs and specialized exhibitions as well as by trade organizations and overseas branches, these materials give us information about the technical specifications of the manufactured computers, peripherals and systems and their software.

Resently we added to our collection a german language ISOTIMPEX leaflet for ES 9003 Multi-user system.

on 2014/4/29 15:00:00

Interesting addition to my collection is a floppy disk controller "FDC 3.2" for Pravetz 8D. The controller is capable of:

controlling one or two DISK ][ compatible drives;
accessing the extra 16KB RAM of Pravetz 8D;
and has an option to add external "RESET" button.

It is compatible with RAM DOS 2.31 and programs, recorded on cassette tape. The controller is designed by Boian Mitov and is manufactured in 1993. Around 250 to 300 units were made during the 3 year production.

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