Olivetti M28

{{Use dmy dates|date=February 2020|cs1-dates=y}}

{{Infobox computer

| Photo = Olivetti-M28.jpg

| Name = Olivetti M28

| manufacturer = Olivetti

| Type = Personal computer

| Released = {{Start date and age|1986|df=yes}}

| Discontinued =

| CPU = Intel 80286 @ 8 MHz

| Memory = 512 KB (expandable to 1024 KB on the motherboard)

| OS = MS-DOS 3.2, XENIX

| predecessor = Olivetti M24

| successor =

| aka = AT&T PC 6310, LogAbax Persona 1800

| display = 12" monochrome or 14" color monitor; proprietary DB25 interface; 640x400, 640x200 monochrome; 320x200 in 4 colors; 80x25, 40x24 characters in 16 colors

| sound = Internal Speaker

| connectivity = Serial RS-232 port, Centronics parallel port

| memory card = Floppy Drive

| storage = 20MB hard drive

}}

The Olivetti M28 personal computer, introduced in 1986, was the successor to the Olivetti M24.

It had an Intel 80286 CPU running at 8 MHz and 512 KB (expandable to 1024 KB on the motherboard) of RAM, featuring a 5.25" floppy drive and a 20 MB hard drive.{{Cite web |last=Schumann |first=Heiko |date=16 October 2016 |title=Olivetti M28 |url=https://olivrea.de/olivetti-m28/ |website=olivrea - sammler von klassischen olivetti personal computer & zubehör |language=German}} The operating systems were MS-DOS 3.2 and XENIX.{{Cite book |url=https://archive.org/details/olivettim28/page/n3/mode/2up |title=PERSONAL COMPUTER M 28 Caratteristiche tecniche |publisher=Olivetti |date=November 1986 |language=Italian}}

The computer had room to install three disk units, as opposed to only two on the M24. It was possible to install a 70 MB hard drive, a 80287 math coprocessor and an enhanced CGA compatible graphic card capable of displaying {{Resx|640|400}} pixels with 16 colors.{{Cite book |url=https://www.sba.unipi.it/sites/default/files/11.pdf |title=PERSONAL COMPUTER M 28 Caratteristiche tecniche |publisher=Olivetti |date=March 1986 |language=Italian}}

The Olivetti M28 was rebranded as the AT&T PC 6310 by AT&T in 1987 and sold on the US market.{{Cite news |last=Waurzyniac |first=Patrick |date=January 19, 1987 |title=AT&T to Offer 286-Based AT Compatible |volume=9 |pages=5 |work=InfoWorld |issue=3 |url=https://books.google.com/books?id=SjwEAAAAMBAJ&dq=Olivetti+M28&pg=PA5}}{{Cite book |url=https://www.thecomputerarchive.com/Computers/PC%20desktops/ATT%20PC%206310.pdf |title=AT&T PC 6310 |publisher=AT&T |year=1987|archive-url=https://web.archive.org/web/20211107234305/https://www.thecomputerarchive.com/Computers/PC%20desktops/ATT%20PC%206310.pdf |archive-date=7 November 2021 }}{{Cite news |date=March 9, 1987 |title=No matter where you sit in your company, there's an AT&T PC for you |volume=9 |pages=40–41 |work=InfoWorld |issue=10 |url=https://books.google.com/books?id=zzAEAAAAMBAJ&dq=AT&pg=PA41}}

It was available in France as the Persona 1800,{{Cite web |title=Logabax Persona 1600 |url=http://silicium.org/site/index.php/28-catalogue/france/200-logabax-persona-1600 |website=Silicium |language=French}}{{Cite web |last=NECK |first=Fabien |date=2018 |title=Logabax Persona 1800 |url=https://www.system-cfg.com/detail.php?ident=1052 |access-date=2022-12-05 |website=System.cfg Collection d ordinateurs anciens et de consoles de jeux |language=French}}{{Cite book |last=Boucher |first=Henri |url=https://www.aconit.org/histoire/iga_boucher/pdf/Vol_F_746-773.pdf |title=Catalogue informatique – Volume F - Ingénieur Général de l'Armement Henri Boucher |pages=20 |language=French}}{{Cite news |date=June 1986 |title=Micro Systèmes |language=French |pages=34–35 |issue=65 |url=http://fr.1001mags.com/parution/micro-systemes/numero-65-juin-1986/page-34-35-texte-integral}} sold by LogAbax.{{Cite web |last= |first= |date= |title=Logabax histoire |url=http://www.silicium.org/site/index.php/catalogue/28-catalogue/france/202-logabax-histoire |website=Silicium |language=French}}