RE:como puedo manejar la memoria en C
INT 21 48-- - DOS 2+ - ALLOCATE MEMORY
Category: D - DOS kernel
Inp.:
AH = 48h
BX = number of paragraphs to allocate
Return: CF clear if successful
AX = segment of allocated block
CF set on error
AX = error code (07h,08h) (see #0885 at AH=59h)
BX = size of largest available block
Notes: DOS 2.1-6.0 coalesces free blocks while scanning for a block to
allocate
.COM programs are initially allocated the largest available memory
block, and should free some memory with AH=49h before attempting any
allocations
under the FlashTek X-32 DOS extender, EBX contains a protected-mode
near pointer to the allocated block on a successful return
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INT 21 49-- - DOS 2+ - FREE MEMORY
Category: D - DOS kernel
Inp.:
AH = 49h
ES = segment of block to free
Return: CF clear if successful
CF set on error
AX = error code (07h,09h) (see #0885 at AH=59h)
Notes: apparently never returns an error 07h, despite official docs; DOS 2.1+
code contains only an error 09h exit
DOS 2.1-6.0 does not coalesce adjacent free blocks when a block is
freed, only when a block is allocated or resized
the code for this function is identical in DOS 2.1-6.0 except for
calls to start/end a critical section in DOS 3.0+
Sigue....
