10 lines
453 B
Plaintext
10 lines
453 B
Plaintext
10 REM wind the colour down or use a black and white television to see greyscale bars
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20 REM The ZX Spectrum display is 32 columns wide, so we have 8 columns of 4 spaces
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25 BORDER 0: CLS
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30 FOR r=0 TO 21: REM There are 22 rows
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40 FOR c=0 TO 7: REM We use the native colour sequence here
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50 PRINT PAPER c;" ";: REM four spaces, the semicolon prevents newline
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60 NEXT c
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70 REM at this point the cursor has wrapped, so we don't need a newline
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80 NEXT r
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