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S > SORD  > M23 Mark III   

M23 Mark III

The Sord M23 Mark III was available with 12" green monitor or a 14" color monitor.

Despite the M23 featured a cartridge port, all of its important software came on floppies, including the ground-breaking PIPS-III and several BASIC compiler variants developed by Sord and running on their own OS. A lot of good business software and games were written with these.

There were later Mark systems released, including a Mark I with the world's first 3.5 inch floppies deployed, and the Mark V with eight inch drives -- the Mark III had 5.25'' floppies. There was also the Mark X with a 10MB hard drive.

Around 1983 or so the "M23EX" was released - this was basically an M23 with the mk41 drives (5.25" DSHD) housed in an M68 case (more PC-style with separate keyboard and floppies in the main case). It was a low cost option contemporary with the more expensive and better spec'd M68.

Graphics required an upgrade - from memory it was a chip, and also an upgrade from "FDOS" to "GDOS" (the graphics DOS). Graphics on this and the M68 were operated in a weird way from CBASIC or BASIC-II (a structured BASIC) - you put it into graphics mode and then issued specially formatted PRINT commands to access graphics - for example:

20 GRAPH 1
... other code ....
50 GRAPH 0


Contributors: Andrew Joll

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How does it cost ? I find this computer at my house

Monday 21st September 2020
Candice  (France)

J''ai retrouvé un ordinateur identique à celui ci dans mon grenier. Une idée de combien ça vaut ?

Monday 21st September 2020
Candice (France)

SORD was imported into the UK by Exleigh Business Machines (EBM) of Penzance. A small number of machines were re-exported to Cyprus. There is further information on SORD, mainly M5, on this page

Tuesday 10th December 2019
David (UK)


NAME  M23 Mark III
TYPE  Professional Computer
YEAR  1982
KEYBOARD  Full-stroke keyboard with numeric keypad, function keys and arrow keys
SPEED  4 Mhz
CO-PROCESSOR  APU (Am9511) arithmetic processor
RAM  128 KB
ROM  Unknown
TEXT MODES  80 x 25
GRAPHIC MODES  640 x 256
COLORS  8 colors
SOUND  Unknown
SIZE / WEIGHT  420 x 107 x 300 / 3.8 Kg
I/O PORTS  2 x RS232c ports (75 - 19200 baud), Centronics/Parallel port, 3 x bus slots
BUILT IN MEDIA  Two optional 5.25'' disk-drives (330 KB)
OS  Sord DOS, CP/M, UCSD Pascal
POWER SUPPLY  110, 230 V AC +/- 15%
PRICE  Unknown

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Ready prompt
ZX Spectrum
Arcade cherry
Spiral program
Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
Competition Pro Joystick
Atari ST bombs
Elite spaceship t-shirt
Commodore 64 prompt
Pak Pak Monster
Pixel Deer
BASIC code
Shooting gallery
3D Cubes
Pixel adventure
Vector ship

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