Labels:bulletin board | reckoner OCR: Ask DOS read the next 256 characters from the standard input (requires only one int instruction for the entire block No Did we 166 any Done characters? Yes Convert al lowercase characters in the block to uppercase Ask DOS to write the entire block o characters which now guaranteed to contain no lowercase characters the standard output (requires only one int instruction for the entre block Was that Yes the last partial Done block? FIGURE 14.5 It's fastest to transfer characters t and DOS in st7 able blocks. avoiding the overhead of invoking DOS func tions performing data buffering within yout own hlock your code
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