Elwro 800-2 Junior
Země / Country:
Polsko / Poland
Rok / Year:
1986
Česky / Czech :
Elwro 800-2 Junior, Polsko, 1986. Školní počítač vyráběný ve Vratislavi používá Z80A na 3,54 MHz, 64 KB RAM a 24 KB ROM. Dokáže pracovat v režimu kompatibilním se ZX Spectrum a zároveň se systémem CP/J, který vychází z CP/M 2.2 a byl přizpůsoben školní síti JUNET. Z 64 KB RAM je v režimu Spectrum/BASIC běžně využitelných 48 KB. Obraz nabízí 32 nebo 64 znaků na řádek a grafiku 256 × 192. Elwro 800-2 je učitelská varianta s řadičem disketové mechaniky. Přes JUNET mohl jeden učitelský systém obsluhovat až 15 žákovských stanic, zavádět jim CP/J ze serveru, sdílet soubory a tiskárnu a posílat zprávy. Komunikaci sítě zajišťuje sériový řadič 8251 a adresy jednotlivých stanic se nastavují hardwarově.
English / Anglicky :
Elwro 800-2 Junior, Poland, 1986. This school computer made in Wrocław uses a Z80A at 3.54 MHz, 64 KB RAM and 24 KB ROM. It can operate in a ZX Spectrum compatible mode and also under CP/J, a CP/M 2.2 derived system adapted for the JUNET school network. Of the 64 KB RAM, 48 KB is normally usable in Spectrum/BASIC mode. Video provides 32 or 64 characters per line and 256 × 192 graphics. The Elwro 800-2 is the teacher version with a floppy disk controller. Through JUNET, one teacher system could manage up to 15 student workstations, remotely boot CP/J, share files and a printer and send messages. Network communication is handled by an 8251 serial controller and workstation addresses are set in hardware.
Technické údaje / Specifications
Výrobce / Manufacturer: Zakłady Elektroniczne Elwro, Wrocław, Poland
Model: Elwro 800-2 Junior
Rok / Year: 1986
Země / Country: Polsko / Poland
Typ / Type: 8 bit school computer / teacher network workstation
CPU: Zilog Z80A
Takt CPU / CPU clock: 3.54 MHz
RAM: 64 KB, 48 KB normally usable in ZX Spectrum/BASIC mode
ROM: 24 KB including system and boot/network routines
Operační systém / Operating system: Elwro Junior ROM boot and Spectrum BASIC compatibility, CP/J (CP/M 2.2 compatible) from school disk or network
Video / Graphics: 32/64 column text modes, 256 × 192 graphics, ZX Spectrum compatible display mode
Zvuk / Sound: Internal speaker, 1 channel software tone output over multiple octaves
Média / Storage: Cassette, floppy disk through teacher station controller, network boot and shared files over JUNET
Rozhraní / Interfaces: JUNET school network, RS-232C, Centronics printer, cassette, RF/RGB/monochrome video, joystick/mouse/light pen support depending on configuration
Napájení / Power: Internal/external system power arrangement depending on school configuration
Rozměry / Dimensions: Approximately 448 × 299 × 82 mm (800 Junior family keyboard unit, same case family as 800-3; exact 800-2 revision unverified)
Původní cena / Original price: Primarily institutional school equipment, reliable retail price not documented
Zdroje / Sources
1000bit - Elwro Junior family, technical specifications and 800-2 teacher variant
Elwro 800 Junior historical overview
Original 1988 magazine letters from Elwro 800 Junior users explain CP/J and network boot
Sinclair Collection Site, measured Elwro 800-3 Junior 448 × 299 × 82 mm chassis, similar family
