Srovnání: Hitachi MB-6890 × MB-6892
Země / Country:
Japonsko / Japan
Rok / Year:
1980/1983
Česky / Czech :
Srovnání Hitachi MB-6890 Basic Master Level 3 a MB-6892 Level 3 Mark 5, Japonsko, 1980/1983. Oba stroje používají procesor rodiny Motorola 6809 přibližně na 1 MHz a zachovávají stejnou základní architekturu Level 3 s barevnou grafikou až 640 × 200 v osmi barvách. Původní MB-6890 má 32 KB RAM, 24 KB ROM s Level 3 Extended BASICem, šest rozšiřujících pozic a při uvedení stál 298 000 jenů. MB-6892 Mark 5 z dubna 1983 zvyšuje základní RAM na 64 KB a interním modulem MP-9764 ji lze rozšířit na 128 KB. Přidává programovatelný Image Generator pro vlastní znaky a grafické vzory, ale zachovává kompatibilitu s předchozími Level 3. Mark 5 se prodával výrazně levněji za 118 000 jenů. K oběma lze připojit disketové systémy, tiskárnu a RS-232C, Mark 5 navíc podporuje volitelnou PSG zvukovou kartu a 16bitovou procesorovou kartu MP-1600. Jde tedy o evoluci stejné platformy, nikoli o změnu procesorové rodiny.
English / Anglicky :
Comparison: Hitachi MB-6890 Basic Master Level 3 and MB-6892 Level 3 Mark 5, Japan, 1980/1983. Both systems use a Motorola 6809-family processor at about 1 MHz and retain the same basic Level 3 architecture with colour graphics up to 640 × 200 in eight colours. The original MB-6890 has 32 KB RAM, 24 KB ROM containing Level 3 Extended BASIC, six expansion positions and launched at ¥298,000. The April 1983 MB-6892 Mark 5 raises base RAM to 64 KB and can reach 128 KB with the internal MP-9764 memory module. It adds a programmable Image Generator for custom characters and graphics patterns while retaining compatibility with earlier Level 3 systems. The Mark 5 was much cheaper at ¥118,000. Both support floppy systems, printer and RS-232C, while the Mark 5 can also use an optional PSG sound board and the MP-1600 16 bit processor card. It is therefore an evolution of the same platform rather than a change of processor family.
Technické údaje / Specifications
Výrobce / Manufacturer: Hitachi, Ltd., Japan
Model: Srovnání: Hitachi MB-6890 × MB-6892
Rok / Year: 1980/1983
Země / Country: Japonsko / Japan
Typ / Type: Comparison of two Hitachi Basic Master Level 3 computers
CPU: MB-6890: HD6809 / Motorola 6809 compatible | MB-6892: Motorola 6809 family
Takt CPU / CPU clock: MB-6890: approximately 1 MHz | MB-6892: approximately 1 MHz
RAM: MB-6890: 32 KB base | MB-6892: 64 KB base, expandable to 128 KB with MP-9764
ROM: MB-6890: 24 KB Level 3 BASIC/system ROM | MB-6892: 24 KB system/BASIC ROM plus programmable Image Generator support
Operační systém / Operating system: Hitachi Level 3 BASIC in both machines, model specific extensions
Video / Graphics: Both: 40/80 column text and graphics up to 640 × 200 in 8 colours | MB-6892 additionally provides programmable IG character/graphics RAM
Zvuk / Sound: MB-6890: built in software controlled speaker | MB-6892: built in speaker, optional PSG sound board
Média / Storage: Both: cassette and optional Hitachi floppy systems, Mark 5 supports the later Level 3 peripheral ecosystem
Rozhraní / Interfaces: Both: RS-232C, printer, cassette, RGB, light pen and expansion slots | MB-6892 additionally supports optional PSG and MP-1600 16 bit processor boards
Napájení / Power: Both use built in mains power supplies
Původní cena / Original price: MB-6890: ¥298,000 in 1980 | MB-6892: ¥118,000 in 1983
Zdroje / Sources
IPSJ Computer Museum, Basic Master Level 3 MB-6890
8 bit PC資料倉庫, MB-6890 and MB-6892 release data, memory and prices
