Robotron A5105 (BIC)
The Robotron A5105 was also dubbed BIC, which stands for Bildungs Computer (trainings computer in English). The system had many improvements over the KC85 line of computers. It had a much better keyboard, and was much faster then the older line. It had a dedicated graphics chip, which could produce 16 colors, and came with it's own 128KByte dedicated Video RAM. Oddly, the system came with a monochrome monitor.
The system could run CP/M using a special driver for the FDD controller. The computer was manufactured in East Germany between 1989 and 1990, and only around 5000 units were ever produced.
CPU View - U880 CPU (Z80 clone)
The U880 is an 8-bit microprocessor that was manufactured by VEB Mikroelektronik "Karl Marx" Erfurt (abbreviated as MME; part of Kombinat Mikroelektronik Erfurt) in the German Democratic Republic.
The U880 was first manufactured in 1980 at VEB Funkwerk Erfurt, this plant was renamed to VEB Mikroelektronik "Karl Marx" in 1983. The U880 is an unlicensed clone of the Zilog Z80 microprocessor. It even supports all the illegal opcodes and bugs, except for very minor differences like not setting the CY flag for the OUTI command (when L goes zero).
CPU View - Zilog Z80 Family
The Z80 quickly became popular in the personal computer market, with many early personal computers, such as the TRS-80 and Sinclair ZX80, using the Z80 as their central processing unit (CPU). It was also widely used in home computers, such as the MSX range, SORD, and the Amstrad CPC, as well as in many arcade games. Additionally, it was also used in other applications such as industrial control systems, and embedded systems. The Z80 was widely used until the mid-1980s, when it was gradually replaced by newer microprocessors such as the Intel 80286 and the Motorola 68000.
The Z80 microprocessor was developed by Zilog, a company founded by Federico Faggin in 1974. The Z80 was released in July 1976, as a successor to the Intel 8080. It was designed to be fully compatible with the 8080, but also included new features such as an improved instruction set, more powerful interrupts, and a more sophisticated memory management system.
The Z80 quickly became popular in the personal computer
ROM: 16kB
VRAM: 16kB Sound Chip none Sound Simple built in beeper Display Chip need info Display need info Best Text 40x24 Best Color 16 colors, 4-bit palette Graphics 320x256 in 16 colors Sprites n/a System OS KC87 OS & BASIC Storage 3.5" Floppy disk (720kB)