| .BLOAD Statement Details. |
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| BLOAD Statement Details |
|
| Syntax |
| BLOAD filespec [,offset] |
| |
| Argument Description |
| filespec A string expression containing the file specification. |
| Input devices other than the keyboard (KYBD:) are |
| supported. |
| |
| offset The offset of the address where loading is to start. |
| |
| The BLOAD statement allows a program or data saved as a memory-image |
| file to be loaded anywhere in memory. A memory-image file is a byte- |
| for-byte copy of what was originally in memory. |
| |
| Note: Programs written in earlier versions of BASIC no longer work |
| if they use VARPTR to access numeric arrays. |
| |
| The starting address for loading is determined by the specified offset |
| and the most recent DEF SEG statement. If offset is omitted, the |
| segment address and offset contained in the file (the address used in |
| the BSAVE statement) are used. Thus, the file is loaded at the address |
| used when saving the file. |
| |
| If you supply an offset, the segment address used is the segment set |
| by the most recently executed DEF SEG statement. If there has been no |
| DEF SEG statement, the BASIC data segment (DS) is used as the default. |
| |
| If the offset is a single-precision or double-precision number it |
| is coerced to an integer. If the offset is a negative number in the |
| range -1 to -32,768, it is treated as an unsigned 2-byte offset. |
| |
| Note: Because BLOAD does not perform an address-range check, it is |
| possible to load a file anywhere in memory. You must be careful |
| not to write over BASIC or the operating system. |
| |
| Since different screen modes use memory differently, do not load |
| graphic images in a screen mode other than the one used when they were |
| created. |
| |
| Also, because BASIC program code and data items are not always stored |
| in the same locations as they were in BASICA, do not use BLOAD with |
| files created by BASICA programs. |
| ---------------- |
| |
| Differences from BASICA |
| |
| BLOAD does not support the cassette device. |
