120 http://www.z80ne.com/m20 The meeting point for the Olivetti M20 community: software, manuals and technical data. http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc he Olivetti M20 quick reference guide for PCOS 2.0 and BASIC. Many thanks to Filippo Santellocco for the manual and to Gianfranco Mazzarello for the scan home page. Site update Fri, 12 Oct 2012 20:48:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc http://www.z80ne.com/m20/sections/manuals/BASIC_PCOS_Pocket_Reference.pdf Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The video cable brings the power supply to the black and white monitor, as well as the video signals. In this page, we describe the pinout of the cable, hoping that it is useful if yours is damaged. Site update Thu, 07 Aug 2012 22:18:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/hack/videocable/videocable.inc http://www.z80ne.com/m20/index.php?argument=sections/hack/videocable/videocable.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Dwight K. Elvey has updated the memory table describing how the memory is assigned in every configuration of the Olivetti M20. Site update Mon, 28 May 2012 20:56:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/hack/ramtable/ramtable.inc http://www.z80ne.com/m20/index.php?argument=sections/hack/ramtable/ramtable.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The ISA (Industry Standard Architecture) standard was adopted in the original PC-IBM computer and countless expansion cards have been developed for covering almost any need. We would like to discuss here the realization of an adapter which can be used to plug any standard 8 bit ISA expansion card on the Olivetti M20. Site update Wed, 25 Jan 2012 23:09:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/hack/isa2m20/isa2m20.inc http://www.z80ne.com/m20/index.php?argument=sections/hack/isa2m20/isa2m20.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Site update Tue, 14 Sept 2010 21:17:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001/m24_z8001.inc http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001/m24_z8001.inc_23 Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Vincenzo has a nice collection of M20s as well as M24s. He sent two clear pictures of the Z8001 card which was used to make the M24 system able to run PCOS and original M20 software. Site update Sun, 25 Oct 2009 00:41:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001_card/m24_z8001_card.inc http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001_card/m24_z8001_card.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Christian Groessler mantains a particular version of the very well known GCC compiler, able to compile ANSI C programs to be run on an Olivetti M20 running PCOS. Site update Tue, 13 Oct 2009 20:22:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/z8kgcc/z8kgcc.inc http://www.z80ne.com/m20/index.php?argument=sections/download/z8kgcc/z8kgcc.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Andreas has sent a few photos of his very complete M24 system. It is equipped with a Z8001 card which made it able to run PCOS for M24 compatibility. Site update Sat, 28 Feb 2009 00:25:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001/m24_z8001.inc http://www.z80ne.com/m20/index.php?argument=sections/photos/m24_z8001/m24_z8001.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The mystery box depicted is a special DATEV-Device, used in Germany by tax accountants! Site update Thu, 28 Aug 2008 20:43:24 GMT http://www.z80ne.com/m20?id=1 http://www.z80ne.com/m20?id=1 Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Another version of the PCOS operating system is now available. Site update Thu, 19 Jun 2008 21:58:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/wrm20/wrm20.inc http://www.z80ne.com/m20/sections/download/wrm20/pcos110d.img.bz2 Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The Astro-Boulders Asteroids clone has been available as a single file download. Site update Sat, 14 Jun 2008 13:49:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/basic/basic.inc http://www.z80ne.com/m20/index.php?argument=sections/download/basic/basic.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Andreas Senk has sent us a new repair story about a problem found in an Olivetti power supply unit. Site update Fri, 13 Jun 2008 20:43:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/repair/powersupply/powersupply.inc http://www.z80ne.com/m20/index.php?argument=sections/repair/powersupply/powersupply.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) In order to run MS-DOS, Olivetti developed an expansion board equipped with an Intel 8086 processor. Andreas Senk sent a few very nice pictures and screenshots of one of his M20 systems running MS-DOS. Site update Fri, 13 Jun 2008 20:43:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/photos/andreas_8086/andreas_8086.inc http://www.z80ne.com/m20/index.php?argument=sections/photos/andreas_8086/andreas_8086.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) A new review of the Olivetti M20 from the review Bit in Italian has been added. Many thanks to Carlo. Site update Sun, 06 Apr 2008 0:0:24 GMT http://www.z80ne.com/m20/index.php?argument=sections/press/prova_bit/prova_bit.inc http://www.z80ne.com/m20/index.php?argument=sections/press/prova_bit/prova_bit.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Thanks to Roberto Bazzano, a few disk images have been put online. (AGRICOLA.IMD, M20UTENT.IMD, PCOS30E.IMD, PCOS13D.IMD, PCOS13F.IMD) Site update Sun, 30 Mar 2008 20:04:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/wrm20/wrm20.inc http://www.z80ne.com/m20/sections/download/wrm20/PCOS30E.IMD Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Thanks to Christian Groessler, the german manual of the PR320 Olivetti printer is now online. Site update Thu, 30 Jan 2008 20:22:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc http://www.z80ne.com/m20/sections/manuals/pr320-bedienungsanleitung.pdf Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Ettore Sottsass has passed away on December 31 2007, aged 90. He designed the appearence of many Olivetti products, among which the M20. We will miss you. Site update Thu, 8 Jan 2008 20:52:32 GMT http://www.sottsass.it/ http://www.sottsass.it/ Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Christian Groessler has provided a new version (0.9) of the monochrome BMP slideshow program for the Olivetti M20. This version is more responsive and allows to obtain a small transitione effect between slides. Thanks, Chris. Site update Thu, 8 Jan 2008 20:52:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/basic/basic.inc http://www.z80ne.com/m20/sections/download/basic/slideshow-0.9.zip Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Christian Groessler has written a nice BMP slideshow demo in the C programming language. You can find the program with the sources in the Software section. A small video of the demo is available. Site update Thu, 13 Dec 2007 20:01:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/basic/basic.inc http://www.z80ne.com/m20/sections/download/basic/slideshow-0.8.zip Olivetti M20 site davbucci@tiscali.it (Davide Bucci) We reduced the size of the technical assistance manual. Now it has a size of 21.6 MiB. Better than 166 MiB. Site update Thu, 7 Dec 2007 22:43:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc http://www.z80ne.com/m20/sections/manuals/manuale_assistenza.pdf&i1 Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Christian Groessler has improved the Lena demo file, written in C. Source files and demo program are available. Site update Thu, 7 Dec 2007 21:00:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/basic/basic.inc http://www.z80ne.com/m20/sections/download/basic/lena.zip Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Thanks to the information provided in the technical assistance manual, we were able to correct and revise the BIOS error code table. Site update Thu, 6 Dec 2007 21:00:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/repair/repair.inc http://www.z80ne.com/m20/index.php?argument=sections/repair/repair.inc Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The technical assistance manual for the M20 is available in the Manuals section, with the description of every jumper for the board configuration. Many thanks to Roberto Bazzano. I Site update Thu, 4 Dec 2007 21:10:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc http://www.z80ne.com/m20/sections/manuals/manuale_assistenza.pdf Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The ADM-5 disk images have been added in the software section of the M20 site. The Many thanks to Matteo! Site update Sun, 18 Nov 2007 10:41:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/wrm20/wrm20.inc http://www.z80ne.com/m20/sections/download/wrm20/ADM5.IMD Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The DBMS disk images have been added in the software section of the M20 site. The Many thanks to Matteo! Also the MS-DOS 2.0 disk image has been added. This operating system is useful for those having the APB-86 board, with an Intel 8086 CPU. Site update Sun, 18 Nov 2007 10:41:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/download/wrm20/wrm20.inc http://www.z80ne.com/m20/sections/download/wrm20/DBMS.IMD Olivetti M20 site davbucci@tiscali.it (Davide Bucci) A new manual (divided in three parts) has been added to the "manuals" section. Many thanks to Matteo! Site update Thu, 17 Nov 2007 12:57:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/press/press.inc http://www.z80ne.com/m20/sections/manuals/DBMSParte1.PDF Olivetti M20 site davbucci@tiscali.it (Davide Bucci) A new manual (divided in four parts) has been added to the "manuals" section. Many thanks to Matteo, with this very interesting contribution! Site update Thu, 11 Nov 2007 10:05:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/press/press.inc http://www.z80ne.com/m20/sections/manuals/CPM86Parte1.PDF Olivetti M20 site davbucci@tiscali.it (Davide Bucci) A new Olivetti M20 review has been added in the "press" section. Site update Thu, 11 Nov 2007 10:05:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/press/press.inc http://www.z80ne.com/m20/sections/press/jurassic/RecensioneM20.pdf Olivetti M20 site davbucci@tiscali.it (Davide Bucci) Matteo has sent us the Italian and English Olivetti Pascal user manual. This will be interesting for those wanting to use this language on the M20 Site update Thu, 15 Nov 2007 17:58:32 GMT http://www.z80ne.com/m20/index.php?argument=sections/manuals/manuals.inc http://www.z80ne.com/m20/sections/manuals/CPM86Parte1.PDF Olivetti M20 site davbucci@tiscali.it (Davide Bucci) The M20 web site is now hosted at a new address: http://www.z80ne.com/m20. We would like to tank Roberto Bazzano who kindly hosts us. The old IP address will continue to be active until last week of August 2007. Site update Thu, 3 May 2007 20:11:32 GMT http://www.z80ne.com/m20 http://www.z80ne.com/m20 Olivetti M20 site davbucci@tiscali.it (Davide Bucci)