Atari 1200 XL The Atari 1200 XL was the predecessor of the Atari 600/800 XL. It had much of the same characteristics, except the size of its ROM (16 KB instead of 24 KB) the BASIC Interpreter being supplied on a cartridge. Because the built-in Operating System was not designed very well, people are known to have swapped the OS ROM chip from their 800XL & put in the 1200 XL.
Texas Instruments TI 99 / 4A The Texas Instrument TI 99/4A was a very succesful computer. A large number ROM cartridges (36 KB each) were developped for this computer, as the popular Extended Basic. Up to seven peripherals could be connected : 32 KB RAM extension, RS232c, Disk controler (90 KB per disk, up to 3 disk-drives), speech synthetiser, Peripheral Expansion box...
ADD-X Système SMP-5 This is a french professional computer conceived by ADD-X Systèmes based at Blagnac (Toulouse). It was a CP/M and MP/M compatible system, had 64k RAM, two 5''1/4 disk-drives and one 5 MB Winchester hard-drive. It could be expanded to a multipost configuration (up to 3 stations). The following languages were available : Basic, Cobol, Fortran, Pascal, APL.
Sinclair ZX 81 The Sinclair ZX 81 was the successor of the ZX 80, and can be regarded as an evolution of it. The ZX80 could not handle floating point numbers or cassette data files, but the ZX-81 could. The ZX-80 had 4k ROM : the ZX-81 had 8K ROM with 30 additional functions and some instructions to drive the printer. Thanks to a higher level of integrations (the total number of chips in the basic system was 4, against the ZX80's 21), the ZX-81 cost ｣30 less than the ZX-80.
Toshiba PASOPIA This is the first home-computer made by Toshiba and was quite powerful for 1981 : 64k RAM, 80 columns, 640 x 200 high resolution and large expansion possibilities. There were two models : the PA7010 with the T-BASIC built-in, and the PA7012 with the OA-BASIC built-in. The advantage of the OA-BASIC is that it can use indexed sequential access methods to handle files, and has an automatic load / run function for launching programs.
Xerox 820 The Model 820 is an attempt from Rank Xerox to enter the professional micro-computer market. But the 820 is a bit weak with its Z80 at only 2,5 Mhz and its 96kb 5''1/4 disk-drives (83k formated). Fortunately higher capacity 8'' disk-drives were also available (300 kb each). Apparently a 10Mb hard-disk was also proposed. The communication was focused on the fact that the Xerox 820 could suit to a lot of professions, and indeed...
SMT SMT Goupil 2 Goupil was the old french word for fox (renard). The Goupil was designed to be modular. It could be used as a home computer but its maim purpose was to be used in French schools in connection with other computers, or as a small server thanks to its built-in 300-baud modem. The system was composed of a backplane used as a backbone to connect various cards: CPU card (a 6808 with 2 KB VRAM), RAM card (56 KB), disk controller, I/O card...
AXEL Click here to read to company history AX-20 This french mono-bloc system had no great success. It was however a nice designed system with its 8 function keys mounted directly onto the monitor (like with some Hewlett-Packard systems). The idea was interesting, because the function of each key was dynamicaly displayed right above it, but it becomes tiring to have to lift an arm to reach these keys... The AXEL-20 can display 640 x 416 pixels with 8 different level of brightness.
Altos Computer Systems Serie 5 The Serie 5 was a multi-user system. It could support from 1 to 3 users. It had a 5 MB Winchester hard-drive and could be upgraded with a 10 MB hard-drive (for the Serie 5D only). It could use CP/M, MP/M II or Oasis as its operating system. The serie 5 was quite similar to the Altos ACS-8000 which was a bit more powerful.
AVT ELECTRONICS Comp 2 This is quite a rare computer ! It was conceived by a dutch company called AVT Electronics. AVT is short for Alex van Tienhoven, then the owner of the company. This computer was made in Korea as per AVT's design... This obscure system is Apple II compatible (hardware & software), hence the "Comp2" name. The system is composed of a separate keyboard and a big case housing two 5''1/4 disk-drives, the mainboard and 8 expansion slots.