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Ringo R470

Ringo R-470 was a Brazilian clone of the Sinclair ZX81 by Ritas do Brasil Ltda. introduced in 1983. It featured a Z80A processor at 3.25 MHz, 8K ROM and 16 KB RAM. It wasn't 100% compatible with the ZX81, and some BASIC tokens have alternate codings.

Keywords and symbols
BASIC keywords and character mapping are slightly altered on Ringo R-470 compared to the ZX81. Entry is still accomplished per keyword token, obtained using different cursor modes and key combinations, but these are different from the ZX81. The following table shows the supported BASIC keyword tokens and symbols, and the key combinations needed to enter them. == References ==
Source: Wikipedia ↗
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