NUOVA ELETTRONICA
Z80 COMPUTER

 

 

 

 

This site is dedicated to the computer published in kit by Nuova Elettronica italian magazine from 1979 to 1985.

Here you will find all articles and informations I found related to this computer, schematics, software, and add-on cards made by me.

Now this kit is obsolete, but it's very interesting for technical solutions used, and also because it was helpful in teaching alot of technicians that, like me, spent many hours in assembling and programming this beautiful computer.

 

I'm always searching for informations, hardware, software, third party add-ons and everything else related to this computer: if you have any information or question don't hesitate to email me.

 

 

A particular thank you goes to Nuova Elettronica magazine that gave me permission to make this site.

 

 

 

 

NOTE: unfortunately Nuova Elettronica ceased publications with number 250 on September-October 2012, and on 14 November 2013 a bankruptcy procedure against C.R.E. (Centro Ricerche Elettroniche) that owned editorial rights was started (source Wikipedia).

 

 

 

 

 

LATEST UPDATES :
15/10/2019 Added GERBER files of LX.380, LX.381b, LX.382, LX.383 and LX.384 cards in the printed circuit boards section (thanks to Andrea Genovese)
05/06/2019 Added PS2 keyboard interface version 3.3.1 in the add-on and researches section (thanks to Pino Giaquinto)
03/06/2019 Added GERBER files and Kikad project of MicroDesign version of the LX.381 BUS, with terminated and shielded lines, in the printed circuit boards section (thanks to Salvatore Besso)
Updated GERBER files and added Kikad project of eprom programmer LX.394-LX.395 daughter cards in the printed circuits boards section (thanks to Salvatore Besso)
07/01/2019 Added listing with remarks of the 382 eprom in the software section (thanks to Antonio Giuliana)
04/12/2018 Added modified 382 eprom to be used with the LX.388 video card and alphanumeric keyboard in the add-on and researches section (thanks to Sergio Internicola)
22/11/2018 Added GERBER files of LX.390 card, LX.529 card, 56K ram card and multi-firmware card in the printed circuit boards section (thanks to Paolo Pinto and Pino Giaquinto)
19/11/2018 Due to a typo made around 40 years ago (!!!) the eprom 382 had a bug (the byte at address 0345h must be CDh, and not C0h). All dumps of this eprom on this site have been corrected.
Updated multi-firmware card eprom in the add-on and researches section. Now the firmware works with any combination of LX.388, LX.529 or LX.384 card.
11/10/2018 Updated MicroLG bullettins of year 1983 numbers 1, 3, 4, 6 that had missing pages in the articles section (thanks to Salvatore)
09/10/2018 Added a note to ram configuration in the configurations section
08/10/2018 Added GERBER files of LX.382 card by Paolo Pinto in the printed circuit boards section
18/05/2018 Corrected LX.529 video graphic card schematics in the hardware and schematics sections (thanks to Paolo Pinto for pointing out)
15/05/2018 Added hand-made listings by Biagio Paribello related to eprom 382, 390 and 394 in the add-on and researches section
10/03/2018 Added 113 new floppy disks of Constantinos Haritakis disk library, Nuova Elettronica collaborator, in the software section
Added Piergiorgio Betti article about how to interface the Z80 and a PC in the add-on and researches section
05/03/2018 Added description of floppy disk formats used by eprom 390 and NE-DOS in the add-on and researches section
01/03/2018 Added printed circuit boards in the printed circuit boards section
Added cover for 12" monitor and metallic case in the hardware section
26/02/2018 Changed section printed circuit boards
Moved "Other projects" section into add-on and researches section
12/12/2017 Added assembler listings related to S.O.N.E. in the add-on and researches section
07/11/2017 Added missing MicroLG bullettins from November 1983 to April 1985 and September-October 1985 in the articles section (thanks to Vairo Risoldi)
01/11/2017 Added print of basic language tutorials on floppy published on magazines 81, 89 and 101-102 (lessons 8, 9, and from 21 to 50 are missing) in the articles section. Thanks to Constantinos Haritakis
30/10/2017 Added article about how to expand ram up to 60 Kbytes in the add-on and researches section (thanks to Piergiorgio Betti)
29/10/2017 Added rack case and desk in the hardware section
Added alphanumeric keyboard LX.387 printed circuit board in the hardware section (thanks to Piero Andreini)
Added eprom patch for video-graphic interface LX.529 in thesection (thanks to Pino Giaquinto and Piergiorgio Betti)
24/10/2017 Added hard-disk controller Xebec S1410A owner's manual in the datasheet section
23/10/2017 Added computer replica made by Paolo Pinto in the related projects section
15/10/2017 Added the new printed circuit boards section, where you can find gerber files to make printed cirtuit boards replicas, made by Andrea Genovese
11/10/2017 Opening of a new Facebook page with related group. Everyone is invited. Join us!!!
24/09/2017 Added printed circuits scans in the hardware section
09/01/2017 Added photos of Davide Pasqualini computer in the photo section
18/03/2015 Added new Micro LG bulletins (from year II number 1 to year III number 10) in the articles section
Added manual "Product Specifications" for Tandon TM-100 disk drive in the datasheets section
13/03/2015 Added new Micro LG bulletins (from year I number 8 to year I number 12) in the articles section
Removed "Market" section
18/01/2012 Added a method to recreate floppy disk from images in the software section
Added 30 floppy disk software images in the software section
26/10/2011 Added printed circuits photos of boards LX.381, LX.381/B, LX.382, LX.383, LX.384, LX.385, LX.386, LX.389, LX.394, LX.395, LX.529, LX.548 and LX.683 in the hardware section. Photos by Luigi Serrantoni
17/03/2011 Added 56k static memory expansion project in EDWIN format in the add-on and researches section
Added multi-firmware eprom card project in EDWIN format in the add-on and researches section
11/03/2011 Added 56k static memory expansion pcb layout in the add-on and researches section
26/01/2011 Fixed mistake in the description of the reset circuit of the floppy-disk card in the hardware section
Changed a remark into the file monitor3.asm in the add-on and researches section
24/10/2010 Added Micro-Lg year I numbers 3, 4, 5, 6 and 7 bullettins in the articles section. A particular thanks to Vairo Risoldi that scanned the original bullettins
07/10/2010 Added Micro-Lg year I numbers 1 and 2 bullettins in the articles section. A particular thanks to Vairo Risoldi that scanned the original bullettins
Added an advertising appeared on Bit magazine in the articles section
Added other photos of Pino Giaquinto computer in the photo section
09/04/2010 Added PS/2 keyboard interface in the add-on and researches section
30/01/2010 Added Micro-Lg year VI number 9-10 bullettin in the articles section
07/01/2010 Added other photos of Pino Giaquinto computer in the photo section
01/01/2010 Added some suggestions included to the LX.392 dynamic ram expansion kit in the articles section
Added some photos of the LX.392 dynamic ram expansion in the hardware section
27/12/2009 Added hard-disk interface photos in the hardware section and in the add-on and researches section
Added hard-disk photos in the restoration photo report sub-section
10/12/2009 Made an updated version of the multi-firmware monitor to fix a compatibility problem between hexadecimal monitors that use relocated stack and the eprom programmer, in the add-on and researches section
29/10/2009 Added two floppy disk software images in the software section
22/04/2009 Added tape programs in the software section
06/02/2009 Added details to the tape interface description in the hardware section
28/01/2009 Found a Trendcom 200 thermal printer and added photos in the hardware section
26/01/2009 Added Basf 6188 hard-disk manual in the datasheets section
20/01/2009 Renamed the add-on section into add-on and researches
Discovered informations about the hard-disk: they are in the hardware and add-on and researches section
Added informations related to SONE floppy-disk format in the add-on and researches section
25/11/2008 Added photos of Pino Giaquinto computer in the photo section
17/09/2008 Added Micro-Lg year VI number 7-8 bullettin in the articles section
Added Micro-Lg year unknown bullettin in the articles section
Added Micro-Lg price list March 1986 in the articles section
18/04/2008 Added a detailed table with all files contained in the multi-firmware eprom, in the add-ons section
17/04/2008 Made a new version of the multi-firmware monitor with an added option to use eprom 382 original monitor for the hexadecimal keyboard relocated at F000h. Also the eprom programmer firmware has beed added to all available monitors. You can find it in the add-ons section. Old multi-firmware version has beed removed
12/04/2008 Big news: recovered editor/assembler for video graphic card LX.529, and three other programs never released. Programs were on the NE-DOS version G.1.0 original floppy as deleted files, and I undeleted them using a Tandy TRS-80 emulator. You can find them in the software section
11/04/2008 English version of the site is now available
08/04/2008 Changed datasheet of MC6847 with a more complete version in the datasheets section
03/04/2008 Added images of original Nuova Elettronica floppy about NE-DOS 2.1 and NE-DOS G.1 in the software section
20/03/2008 Added Tandon TM-100 drive user manual in the datasheets section
18/03/2008 Added Claudio Pasquini computer photos in the photos section
24/12/2007 Added image of Editor Assembler/Disassembler floppy in the software section
06/08/2007 Added Micro-Lg year V number 5-6 bullettin in the articles section
20/06/2007 Added Micro-Lg year V number 11-12 in the articles section
25/05/2007 Added new section other computers
03/05/2007 Added a recent article published on number 9 of Jurassic News online magazine in the articles section
25/02/2007 Added Micro-Lg year VI number 5-6 bullettin in the articles section
26/12/2006 Added anonymous bullettin in the articles section
10/12/2006 Added images of SONE operative system floppy in the software section
01/12/2006 Added errata corrige about 15 MBytes hard-disk LX.683 in the articles section
27/11/2006 Added new section add-ons
23/11/2006 Added image of 5,5K basic floppy in the software section
Updated informations about how to recreate floppy disks from images
22/11/2006 Added dump of eproms "390" and "683" in the software section to boot 5,5K basic on floppy and S.O.N.E., as explained in the hardware section
21/11/2006 Added complemented dump of eproms "1390" and "2390" in the software section to be used with the floppy interface LX.390, as explained in the hardware section
20/11/2006 Added photos of eprom programmer LX.394-395 in the hardware section
20/11/2006 Added dump of eprom "394" for the eprom programmer LX.394-395 in the software section
06/11/2006 Added Micro-Lg year VI number 3-4 bullettin in the articles section
31/10/2006 Added manuale basic assembler più grafica in the articles section
06/10/2006 Added new section Related projects and added Pietro De Luca computer project
02/08/2006 Added Micro-Lg bullettins and various publications in the articles section
Added more photos in the photos section
16/07/2006 Added datasheets about all components used in the computer in the datasheets section
15/06/2006 Found an error in the exadecimal interface schematic, as detailed in the hardware section
14/06/2006 Added Tandon TM-100 drive datasheet in the datasheets section
13/06/2006 Corrected reset circuit description of the floppy disk interface in the hardware section
Added photo report about my computer restoration in the photos section
10/06/2006 Added all missed schematics in the schematics section
09/06/2006 Added new section configurations
05/06/2006 Added some schematics in the schematics section
04/06/2006 Added hexadecimal keyboard interface photos and alphanumeric keyboard LX.387-B photos in the hardware section
02/06/2006 Corrected dump of eprom 548-5.BIN about 16 KBytes ROM basic (it was wrong)
Added manuale basic più dos in the articles section
28/05/2006 Added some missed photos in the hardware section
Added FD1771 floppy disk controller datasheet
27/05/2006 Added magazines number 84-85, 86-87, 89, 95, 96, 98, 101-102 and 103 in the articles section
Added references to alphanumeric keyboard LX.387-B in the hardware section
Added description of numeric keyboard LX.549 and keyboard case in the hardware section
Added description of hard-disk interface LX.683 in the hardware section
Added autorepeat card LX.710 in the hardware section
26/05/2006 Corrected references to basic 2.1+ ne-dos 1.5 and added references to basic 1.0 + ne-dos 1.0
Added table with bus signals in the hardware section
Added magazines number 81 and 82-83 in the articles section
Added command in the software section to recreate floppy images using a Catweasel MK4 interface
25/05/2006 Added magazines number 79 and 80 in the articles section: 12" monitor and basic 2.1 and ne-dos 1.5 instructions
24/05/2006 Corrected dump of eproms "382" and "1390" (a wrong version was uploaded)
Added new section "Market"
23/05/2006 www.z80ne.com opening

 

 

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