Ringo R470
Brazilian Sinclair ZX81 clone / From Wikipedia, the free encyclopedia
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]
Developer | Ritas do Brasil Ltda |
---|---|
Type | Home computer |
Release date | 1983; 41 years ago (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 |
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]