Global InformationRingo R470 information
 | |
| Developer | Ritas do Brasil Ltda |
|---|---|
| Type | Home computer |
| Release date | 1983 |
| Introductory price | Cr$ 449,950.00 |
| Operating system | 8K Sinclair BASIC |
| CPU | Z80 @ 3.25 MHz |
| Memory | 16 KB |
| Removable storage | Audio cassette, 300/2400 bit/s |
| Display | Monochrome TV; 32 x 24 characters, 64 x 48 using semigraphic symbols |
| Controller input | Joystick |
| Connectivity | connector port for a 1200 bit/s modem |
Ringo R-470 was a Brazilian clone of the Sinclair ZX81 by Ritas do Brasil Ltda. introduced in 1983.[1][2][3][4][5][6][7][8] It featured a Z80A processor at 3.25 MHz, 8K ROM and 16 KB RAM.[9][10] It wasn't 100% compatible with the ZX81, and some BASIC tokens have alternate codings.[1]
It had a connector port for a 1200 bit/s modem and a joystick, and supported data storage using an external cassette recorder at 300 and 2400 bit/s.
There was an option to display "inverted video" (white background with black characters) by pressing INVERSE VIDEO.[8] The computer also featured separate arrow keys.[8]
The machine had a price of Cr$449,950,[9] higher than competitor computers like the TK85 costing Cr$369,850,[9] and it was not successful.
This computer can be emulated on modern systems under EightyOne Sinclair Emulator or MAME.[11][12]
- ^ a b "Trying Out the Ringo R-470, a Brazilian ZX-81 Clone - Code, Strings, and Keys". 2021-09-22. Retrieved 2023-01-05.
- ^ "O Ringo R-470". Datassette (in Brazilian Portuguese). 2018-11-12. Retrieved 2023-01-05.
- ^ "Ringo R470". Spectrum Computing.
- ^ Woodcock, Colin (2012-05-07). The ZX Spectrum on Your PC. Lulu.com. ISBN 978-1-4716-9612-1.
- ^ "Computadores & Comunicações". Jornal do Brasil (in Brazilian Portuguese). May 20, 1985. p. 15.
- ^ "Micro R-470 Ringo - ZX81". COB-Clube Old Bits (in Brazilian Portuguese). 2005. Archived from the original on 2015-10-30. Retrieved 2023-01-11.
- ^ 14.° CONEX - FORMAÇÃO E CATALOGAÇÃO DO ACERVO DO MUSEU DA COMPUTAÇÃO DA UEPG (PDF) (in Brazilian Portuguese). 2016. p. 5.
- ^ a b c Manual de Operação do Microcomputador R-470 Ringo (PDF) (1 ed.). Ritas do Brasil. 1983.
- ^ a b c "Ringo R470 advert". Micro Sistemas (in Brazilian Portuguese). May 1984. p. 43.
- ^ "ZX81 Clones from Ritas do Brazil". Kio's Sinclair ZX Computers Archive. Retrieved 2023-01-11.
- ^ "EightyOne Sinclair Emulator". SourceForge. Retrieved 2023-02-15.
- ^ Motoschifo. "Ringo 470 - MAME machine". adb.arcadeitalia.net (in Italian). Retrieved 2023-02-15.