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4 votes
2 answers

How do I use the extra commands in the Spanish version of the 128k Spectrum ROM?

The Spanish Inves/Investronica version of the 128k Sinclair Spectrum had a rather different ROM from the English 128k Speccy. Error messages were in Spanish, there were extra letters and punctuation ...
38 votes
2 answers

Can a USR command damage a ZX Spectrum?

I recently came across this magazine snippet; specifically this section: Aprovechamos para avisar a los usuarios del Inves, que nos ha Ilegado el rumor de que haciendo: BORDER 5 RANDOMIZE USR 4665 ...