Contents |
Effect
Mounts (inserts) the specified disk image (DSK file) to the virtual diskdrive of the MSX1/MSX2 computer emulated in a MSX turbo R with the rMSX emulator and/or activates a specified disk number.
Notes:
- The real disk drive of the MSX turbo R can also be used with a real disk
- Programs on disk can usually be started with one of the following instructions:
- RUN"AUTOEXEC.BAS" when there is an autoexecutable BASIC loader
- CALL SYSTEM for many disks with a visible or hidden MSX-DOS loader
- However, it's generally more easy to use the CALL RESET instruction after insertion of the disk(s) + activation of a specific disk for games on multiple disks
Syntaxes
- CALL CHDSK [("<Device>:\<Path>\<Filename.DSK>")] to mount disk image for current disk number. If parameter is not given or it is empty real disk drive will be used
- CALL CHDSK ("<Device>:\<Path>\<Filename.DSK>"),<DiskNumber> to mount disk image to specified disk number (without activation)
- CALL CHDSK (<DiskNumber>),("<Device>:\<Path>\<Filename.DSK>")] to activate specified disk number and optionally mount disk image to it
Notes:
- Character backslash (\) serves as a separator between the folders and the file name in MSX-DOS2. You don't have to put it after the colon of the device name.
- Character backslash is replaced by the character yen (¥) on Japanese MSX or the character won (₩) on Korean MSX.
- Parameters can not end with a comma alone.
Parameters
<Device> is the name for used device (see table below).
If you don't specify the drive, the instruction will be applied to the currently active drive (by default, it's drive A:)
| Device type | Device name | Remark |
|---|---|---|
| Disk drive | A, B, C, D, E, F, G, H | A floppy disk interface can control until 2 drives. |
<Path> is used to specify the location in folders of the DSK file to insert. Each folder name in path are separate by a backslash (\). This parameter is only available in version 2 of Disk BASIC.
Dot (.) represents the current working directory, Dot Dot (..) represents the directory before the current (one level up).
<Filename.DSK> is the name of the DSK file to insert in the emulated MSX1 or MSX2 computer.
<DiskNumber> is an integer between 0 and 9
Examples
_CHDSK ("A:\GAMES\DSK\ANDOROGY.DSK")
A loader for Aleste 2 with activation of the first game disk (0 = demo disk, 1 and 2 = game disks)
10 _CHDIR("A:\GAMES\DSK\") 20 FOR D=1 TO 3 30 N$="ALESTE2"+HEX$(D) 40 _CHDSK(N$+".DSK",D-1) 50 NEXT D 60 _CHDSK(1) 70 _RESET
Related to
CALL CHDIR, CALL FILES, CALL RESET, FILES