Function 44h I/O Control for Devices (IOCTL) Get or Set Device Informationentry AH 44h
AL 0Fh Set Logical Device (DOS 3.3+)
BL drive number: 0=default, 1=A:, 2=B:, etc.
BX file handle
CX number of bytes to read or write
DS:DX data or buffer
DX data
return AX number of bytes transferred
or error code (call function 59h for extended error codes)
or status 00h not ready
0FFh ready
CF set if error
file: /Techref/INT/21f/44sf/0f.htm, 0KB, , updated: 1999/4/26 12:35, local time: 2024/8/31 20:22,
3.15.239.17:LOG IN
|
©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://ecomorder.com/techref/INT/21f/44sf/0f.htm"> INT 21f 44sf 0f</A> |
Did you find what you needed? |
Welcome to ecomorder.com! |
Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
.