please dont rip this site
Interrupt 29h   (not documented by Microsoft) 

* Internal - Quick Screen Output

This method is extremely fast (much faster than Int\21f\02 and Int\21f\09,

for example), and it is portable, even to "non-compatible" MS-DOS computers.

entry AL character to output to screen

return unknown

note 1) Documented by Digital Research's DOS Reference as provided with the

DEC Rainbow

2) If device\driver\ANSI.SYS is installed, character output is filtered

through it.

3) Works on the IBM PC and compatibles, Wang PC, HP-150 and Vectra, DEC

Rainbow, NEC APC, Texas Instruments PC and others

4) This interrupt is called from the DOS's output routines if output is

going to a device rather than a file, and the device\drivers

struct -device attribute code word has bit 3 (04h) set to "1".

5) This call has been tested with MSDOS 2.11, PCDOS 2.1, PCDOS 3.1, PCDOS

3.2, and PCDOS 3.3.

6) Used in IBMBIO.COM as a vector to Int\10f\0E (write TTY)

followed by an IRET.




file: /Techref/int/29.htm, 1KB, , updated: 1999/2/20 11:27, local time: 2024/5/3 18:09,
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