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====== Int 12H ======

===== Version =====

IBM 5150 and later

===== Brief =====

Get memory size

===== Family API =====

[[en:docs:fapi:DosMemAvail]]

===== Input =====

none

===== Return =====

  * AX = kilobytes of contiguous memory starting at absolute address 00000h

===== Macro =====

<code asm>
INCLUDE BIOS.INC

@MemSize
</code>

===== Notes =====

  * this call returns the contents of the word at 0040h:0013h; in PC and XT, this value is set from the switches on the motherboard

===== Note =====

Text based on [[http://www.cs.cmu.edu/~ralf/files.html|Ralf Brown Interrupt List Release 61]]

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