website/content/museum/robotron-kc-87.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Robotron KC 87	Computers	Home Computer	Germany	1986	U880 D	name image company company_name specs tabs forum_thread photos hardware screenshots links docs related oc_id source KC 87 /media/museum/photos/robotron_kc87_system_1.jpg /companies/robotron Robotron label value NAME KC 87 label value MANUFACTURER Robotron label value TYPE Home Computer label value ORIGIN Germany label value YEAR 1986 label value END OF PRODUCTION around 1990 label value BUILT IN LANGUAGE KC 87 OS, BASIC label value KEYBOARD Built into Unit, QWERTZ-Layout, 65 keys\ VERY hard to write with label value CPU U880 D (Z80 clone) label value SPEED 1,75 Mhz label value RAM 17 KB (useable: 16), expandable to 64 KB max. label value VRAM 2 KB label value ROM 16 KB (4 KB OS, 10 KB BASIC, 2 KB character map) label value TEXT MODES 40x24 characters (switchable to 40x20) label value GRAPHIC MODES Graphics only possible with 128 pre-defined graphic and 96 text symbols in text mode (8x8 pixels size) label value COLORS B/W, color module available as an option (then 8 foreground and 8 background colors) label value SOUND Integrated beeper. Mono sound module with 8 volumes and 6 octaves available as an option label value SIZE / WEIGHT 400x300x85 mm / 4,1 Kg label value I/O PORTS B/W TV output through HF-modulator, DIN connector for cassette drive, DIN connector for special tasks (I/O), 2 connectors for 2 Joysticks, 4 x module slots (K1520-Bus)\ After RGB-Upgrade: 1 connector for 2 Joysticks, 1 connector for RGB color output label value OS KC 87 OS label value POWER SUPPLY ca. 25 W label value PERIPHERALS Colour addon, Sound module, Basic on ROM, 16 KB RAM modules, 10 KB module with room for self-programmed ROM’s, ADC module, DAC module label value PRICE KC 87.30: 3000 Marks (1986), 960 Marks (1989)\ KC 87.31: 1300 Marks (1989) photos hardware software links docs 559 title subtitle text image KC 87 /media/museum/photos/robotron_kc87-front1.jpg title subtitle text image KC 87 Thanks to [WWW.HEIMCOMPUTER.DE](http://www.heimcomputer.de) for this picture /media/museum/photos/robotron_kc87_3.jpg title subtitle text image BACK SIDE On the left, the power plug, the fuse and the On/Off switch. The right inscription mentions that this system is a KC 87.11 version, manufactured in the Robotron factory in Dresden /media/museum/photos/robotron_kc87_back_1.jpg title subtitle text image RIGHT SIDE From left to right: - Optional numeric keypad connector,\ - Tape recorder DIN plug,\ - Colour RGB monitor DIN plug,\ - 2 x Joysticks DIN plug,\ - RF TV aerial output. /media/museum/photos/robotron_kc87_right_1.jpg title subtitle text image KEYBOARD CLOSE-UP #1 Original, well designed but very poor quality keyboard. /media/museum/photos/robotron_kc87_keybclose_1.jpg title subtitle text image KEYBOARD CLOSE-UP #2 /media/museum/photos/robotron_kc87_keybclose_2.jpg title subtitle text image INSIDE #1 Manufacturing quality is equal to the western productions of the time. All chips and components (except 4) came from Eastern-Europe. The numerous brown sqares are old-fashioned capacitors. **(1)** U-880D East-European clone of the Z80 CPU\ **(2)** Video RAM chips\ **(3)** O.S. and BASIC language ROM chips\ **(4)** I/O chips (clones of the 8255 chip)\ **(5)** TV aerial UHF modulator\ **(6)** switching power supply. /media/museum/photos/robotron_kc87_inside_1.jpg title subtitle text image INSIDE #2 Notice the four module slots (K1520-Bus) at the upper left. /media/museum/photos/robotron_kc87-open.jpg title subtitle text image C.P.U. CLOSE-UP To note:\ - The UB 880D microprocessor,\ - 2 x 8 KB ROM chips: one SGS EPROM from Western-Europe (with green mask) and one ROM from Eastern-Europe,\ - Siemens video RAM chips. /media/museum/photos/robotron_kc87_insidecl_1.jpg title subtitle text image EXPANSION MODULES HOUSING /media/museum/photos/robotron_kc87_inside_2.jpg title subtitle text image DOCS Thanks to [WWW.HEIMCOMPUTER.DE](http://www.heimcomputer.de) for this picture /media/museum/photos/robotron_kc87_docs.jpg title subtitle text image KEYPAD Thanks to [WWW.HEIMCOMPUTER.DE](http://www.heimcomputer.de) for this picture /media/museum/hardware/robotron_keypad.jpg title subtitle text image BOOT SCREEN /media/museum/software/robotron_kc87_boot_ss.gif title url text KC Club http://www.kc-club.de/ Nice german site full of info! title url text UPKA http://www.upka.de/ lots of documentations in PDF (German) title url cover text KC87 & Z9001 MANUALS AND DIAGRAMS, IN GERMAN null /media/museum/docs/couvs/vide.gif **KC87 & Z9001 MANUALS AND DIAGRAMS, IN GERMAN**\ written by Robotron  compiled/archived by Compiled/archived by Thomas Stein\  type of document : PDF\  source : Thomas Stein /museum/r-f-t-kc-85-3 /museum/r-f-t-kc-85-4 /museum/robotron-kc-85-1-z-9001 568 url date https://web.archive.org/web/20230601145719/http://www.old-computers.com/museum/computer.asp?c=568 2023-06-01

The KC87 is the successor of the KC85/1. The main difference between the two systems is the built-in BASIC interpreter. Thus it was software and hardware compatible to its predecessor.

This model existed in two different versions: KC87.30 and KC87.31. Latter had the RGB option already included.

Text and info kindly provided by Stefan Goehler.