Interrupt 12h Memory Size(0:0048h) get system memory
return AX number of contiguous 1K RAM blocks
note: 1) On some early PC models, the amount of memory returned by this
function is controlled by the settings of the dip switches on the
system board and may not reflect all the memory that is physically
present.
2) On the AT, the value returned is the amount of functional memory
found during the power-on self-test, regardless of the memory size
configuration information stored in CMOS RAM.
3) The value returned does not reflect any extended memory (above the
1 Mb boundary) that may be installed on 80286 or 80386 machines
such as the AT or PS2 (models 50 and above)
4) This is the same as the value at BIOS\Address -40:13
file: /Techref/int/12.htm, 0KB, , updated: 1999/2/20 10:27, local time: 2024/12/25 10:41,
18.191.147.146: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://techref.massmind.org/techref/int/12.htm"> int 12</A> |
Did you find what you needed? |
Welcome to massmind.org! |
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! |
.