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Updated Readme #118

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19 changes: 10 additions & 9 deletions Chapter-5/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -20,23 +20,24 @@ void Io::putc(char c){
kattr = 0x07;
unsigned char *video;
video = (unsigned char *) (real_screen+ 2 * x + 160 * y);
// newline
if (c == '\n') {

if (c == '\n') { // newline
x = 0;
y++;
// back space
} else if (c == '\b') {
}
else if (c == '\b') { // back space
if (x) {
*(video + 1) = 0x0;
x--;
}
// horizontal tab
} else if (c == '\t') {
}
else if (c == '\t') { // horizontal tab
x = x + 8 - (x % 8);
// carriage return
} else if (c == '\r') {
}
else if (c == '\r') { // carriage return
x = 0;
} else {
}
else {
*video = c;
*(video + 1) = kattr;

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