QBasic 1.1 Commands List: BSAVE Statement

Syntax
BSAVE filespec$, offset%, length&
BLOAD filespec$[,offset%]
Description / Parameter(s)
filespec$ For BSAVE, a file to which an area of memory (a byte-for-byte memory image) is copied. For BLOAD, a memory-image file created by a previous BSAVE.
offset% For BSAVE, the offset of the starting address of the area of memory being saved. For BLOAD, the offset of the address where loading starts.
length& The number of bytes to copy (from 0 through 65,535).
The starting address of the memory area saved or loaded is determined by the offset and the most recent DEF SEG statement.