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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
YEAR  1982
CONTROLLERS  Full-stroke keyboard with numeric keypad, function keys and arrow keys
SWITCHES  APU (Am9511) arithmetic processor
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)
POWER SUPPLY  110, 230 V AC +/- 15%
PRICE  Unknown

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Ready prompt
ZX Spectrum
Arcade cherry
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Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
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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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