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O > OLIVETTI  > M24     


Olivetti
M24

This is a highly IBM PC compatible system. It means that it is truely hardware and sotfware compatible with the IBM PC of that time. Back then, all "PC compatible" systems were not exactly 100% compatible... so it was a real marketing argument for the Olivetti M24.
There were two true tests to know if a system was really IBM PC compatible : Lotus 1-2-3 and Microsoft Flight Simulator, and the M-24 was running both with no problem.

But in addition to its good compatibility, the Olivetti M24 was offering more than the IBM PC itself : RS232c and Centronics interface built-in, more complete keyboard, better graphic possibilities (640 x 400) and 7 free expansion slots (instead of 3 for the IBM PC). Even the CPU (8086, real 16-bit) was faster than the 8088 (16-bit with an 8-bit bus) used by the IBM PC.

It runs under MS-DOS 2.11, CP/M 86, UCSD P-System and even PCOS, the Olivetti OS used on the M20.
The 128k RAM can be expanded to 256k or 640k by adding memory directly onboard. It is also possible to connect two optional 10 Mb hard disks (one internal and one external).
The Olivetti M24 was sold with a green or yellow phosphore 12" monochrome monitor, or with a color monitor (more expensive, of course). Two keyboards were available : one absolutly identical to the IBM PC's, and an Olivetti with more keys (102 instead of 83) including 18 functions keys and a complete editing keypad.

In September 85 appears a new model, the M24 SP. It is based on a M24 but its Intel 8086 is running at 10 Mhz, it has 512k RAM (still upgradable to 640k) and a 20Mb hard-disk.

Conclusion : the Olivetti M24 was the first computer to be fully compatible with the IBM PC and to offer more features than original PC, for a cheaper price !

The Olivetti M24 was also sold as the Logabax 1600 in France (Olivetti owned Logabax) and the ATT PC-6300in the USA (Olivetti signed a distribution deal with ATT). As Olivetti was not entirely satisfied with the ATT deal, it also approached Xerox to distribute its computers in the USA.



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Hi, does anyone know if I can purchase an M24 or comparable with the old style 5.25 floppy drive or for USA 5 1/4 inch floppy drive
Many Thanks

          
Friday 16th September 2016
Robert Ingram  (England)

The one I was using back then had an NEC V20 processor instead of the Intel 8086, and was more than 3x faster than the IBM PC XT. Also, Olivetti provided a special version of GWBASIC with the DOS that supported the 640x400 mode.

          
Wednesday 6th July 2016
Aleksandar (Slovenia)

I sold my C64 to get this machine. My mother was skeptical because I already spent too much time and money for computers. My buddy told my mother "Don''t worry, with this computer he will have all he needs for years to come, no need to buy a new computer for a long time"

          
Thursday 3rd March 2016
TheDude

 

NAME  M24
MANUFACTURER  Olivetti
TYPE  Professional Computer
ORIGIN  Italy
YEAR  1984
BUILT IN LANGUAGE  MS-DOS and GW-Basic delivered on disks
KEYBOARD  Separated full-stroke keyboard, 102 keys, numeric keypad, 18 function keys
A standard IBM keyboard (83 keys) was also proposed
CPU  Intel 8086
SPEED  8 MHz
CO-PROCESSOR  optional 8087 arithmetic co-processor, NEC 6845 video generator
RAM  128 Kb (up to 640 Kb)
VRAM  40 / 80 x 25
ROM  16 Kb
TEXT MODES  40 x 25, 80 x 25
GRAPHIC MODES  320 x 200 with 4 colors / 640 x 200 monochrom / 640 x 400 monochrom
COLORS  16
SOUND  Tone Generator
SIZE / WEIGHT  16 x 38 x 37 cm
I/O PORTS  Centronics, RS232c, mouse, keyboard
BUILT IN MEDIA  One or Two 5.25'' disk-drives (360k or 720k), optional 10 Mb hard-disks
OS  MS DOS 2.1, Concurrent CP/M 86, UCSD-P, PCOS
POWER SUPPLY  Built-in PSU, 135w
PERIPHERALS  Hard-disk, IEEE 488, RS 422, RS 232, PC Net boards, IBM 3278 coaxial network board, mouse
PRICE  2 disk-drives system : 3535 (France, 84)
color monitor, 10 Mb hard-disk : 8250 (France, 85)





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