Copies the context of a memory region to an output file or device.
BSAVE filename,offset,length
filename is a string expression that specifies the file or device to which memory contents will be transferred.
offset is a valid numeric expression within the range of 0 to 65535. This is the offset into the segment, declared by the last DEF SEG, where saving is to start.
length is a valid numeric expression within the range of 0 to 65535, specifying the length of the memory image to be saved.
If filename is less than one character, a “Bad File Number” error is issued and the load is aborted.
Execute a DEF SEG statement before the BSAVE. The last known DEF SEG address is always used for the save.
The DEF SEG statement must be used to set up the segment address to the start of the screen buffer. An offset of 0 and a length of 16384 specify that the entire 16K screen buffer is to be saved.
BSAVE performs a byte-by-byte copy. If you save the memory contents to a file, you can later use BLOAD to restore the memory image.
'Create an array with 500 elements
'Initialize the array with values from 1 through 500
DIM sales(1 TO 500)
FOR i = 1 TO 500
sales(i) = i
NEXT i
'Set the segment address to the start of sales
DEF SEG = VARSEG(sales(1))
'Save the array using BSAVE
BSAVE "SALES.DAT", VARPTR(sales(1)), 2000
'Return to the BASIC data segment
DEF SEG