/Vintage/Sinclair/80/Clones/Ritas do Brasil, Brazil/
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ZX81 Clones from Ritas do Brazil

Ritas do Brasil was another manufacturer for a ZX81 clone. It was not fully compatible with the ZX81. There is little information on this computer in the internet.

Overview

based on www.computer-archiv.de/

Name          Ringo R470
Manufacturer  Ritas do Brasil
Year          1981 (?)
OS, Language  modified (?) Sinclair ZX81 Basic
Keyboard      49 rubber keys
CPU           Zilog Z80A @ 3.25 MHz
RAM           16 kB, upgradable up to 48 kB
ROM           8 kB
Text mode     24 lines à 32 characters, 64 non-ascii characters
.             2 lines reserved for INPUT, 22 lines available for PRINT
Graphics      10 block graphics characters for 64x44 'pixel' graphics
Colors        Monochrome
Sound         Beeper [computer-archive.de]
Size, weight  (?)
I/O ports     TV, Z80 bus, tape i/o (?)

Archive

	Name		Letzte Änderung		Länge
	R-470 Ringo xl.jpg size: 1280 × 960		2005-11-15 13:25		229114
	R-470 Ringo.jpg size: 640 × 480		2005-11-15 13:26		85281

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