Difference between revisions of "83Plus:Software:usb8x/Asm Interface/MSD/MSD ImportVariable"
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=== Inputs === | === Inputs === | ||
* HL points to an ASCIIZ string of *.8x* file (path included) | * HL points to an ASCIIZ string of *.8x* file (path included) | ||
| − | * | + | * B is flags byte |
{| border="1" cellpadding="2" cellspacing="0" | {| border="1" cellpadding="2" cellspacing="0" | ||
|- | |- | ||
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<code> | <code> | ||
ld hl,sFilename | ld hl,sFilename | ||
| − | + | ld b,0 ;do not overwrite existing variable and create in RAM | |
U_CALL MSD_ImportVariable | U_CALL MSD_ImportVariable | ||
... | ... | ||
Latest revision as of 19:19, 9 September 2006
Synopsis
Name: MSD_ImportVariable
Minimum usb8x version: 0.10
Imports *.8x* file from specified directory and stores in RAM/Flash.
Inputs
- HL points to an ASCIIZ string of *.8x* file (path included)
- B is flags byte
| Bit 0 | Set if existing variable should be deleted if duplicate is found |
| Bit 1 | Set if variable should be created in Flash; reset if in RAM |
Outputs
- Variable is created in RAM or Flash
- C set if problems
- Returns C set if duplicate variable was found
Destroys
- AF, BC, DE, HL
Notes
Example code to import "game.8xp" in the root directory to RAM:
ld hl,sFilename ld b,0 ;do not overwrite existing variable and create in RAM U_CALL MSD_ImportVariable ... sFilename: DB "/game.8xp",0
If you are writing an application, you must copy the strings you use to RAM first, or else usb8x will not be able to see them.
See Also
- [[../MSD_ExportVariable|MSD_ExportVariable]] - Export variable in RAM/Flash to specified directory as *.8x* file
