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IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

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AH<br />

0x19<br />

Return Value<br />

AL = drive where 0 is A:, 1 is B:, ..., 4 is E:<br />

Related Topics<br />

Top of list<br />

Index page<br />

Set default drive<br />

Interrupt 0x21 service 0x1A: Set Disk Transfer Area Address<br />

Parameters<br />

AH<br />

Sets address of the Disk Transfer Area (DTA) needed for findfirst/findnext functions.<br />

0x2A<br />

DS:DX<br />

Pointer to DTA<br />

Comments<br />

The main task of your application has a standard pointer to a Disk Transfer Area of the program. Tasks<br />

created with the <strong>RTOS</strong> API inside of your application use a DTA from an internal list. A task, which gets<br />

access to the file system (via RTX_ACCESS_FILESYSTEM service) reserves an entry in this list.<br />

Only ten DTA entries for user tasks are available.<br />

Related Topics<br />

Top of list<br />

Index page<br />

DOS Get Disk Transfer Area address service<br />

<strong>RTOS</strong>'s RTX_ACCESS_FILESYSTEM Service<br />

Interrupt 0x21 service 0x25: Set IRQ Vector<br />

Parameters<br />

AH<br />

This function allows you to set an interrupt vector to your interrupt function.<br />

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