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- {
- To change the cursor do the following:
-
- set ah=1
- set up ch as follows
- bit 7 = 0
- bits 6,5 = cursor blink :
- 00 = normal
- 01 = invisible
- 10 = erratic
- 11 = slow
- * On EGA/VGA, anything other than 00 = invisible
- bits 0-4 = top scan line for cursor
- setup cl as follows:
- bits 0-4 = bottom scan line
- call int $10
-
- A normal underline cursor starts at scan line 6 and ends at line 7, so for
- that:
- }
- procedure underline_cursor; assembler;
-
- asm
- mov ah,1 {Set ah=1}
- mov ch,6 {Set ch=6}
- mov cl,7 {Set cl=7}
- int 10h {Call int $10}
- end;
-
- For an invisible cursor simply set the 5th bit of ch:
-
- procedure cursor_off; assembler;
-
- asm
- mov ah,1 {Set ah=1}
- mov ch,26h {Set ch=$26 or 00100110 in binary}
- mov cl,7 {Set cl=7}
- int 10h {Call int $10}
- end;
-