18 lines
533 B
Forth
18 lines
533 B
Forth
( With dst being assumed to be an AT28 EEPROM, perform !
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operation while doing the right thing. Checks data integrity
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and ABORT on mismatch.
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)
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( a n -- )
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: AT28!
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2DUP C! SWAP
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( as long as writing operation is running, IO/6 will toggle at each
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read attempt. We know that write is finished when we read the same
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value twice. )
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BEGIN ( n1 a )
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DUP C@ ( n1 a n2 )
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OVER C@ ( n1 a n2 n3 )
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= UNTIL
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( We're finished writing. do we have a mismatch? )
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C@ = NOT IF ABORT" mismatch" THEN
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;
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