A fast and easily customised operating system
for ARM devices
Service_EnumerateFormats Block
Programmer's Reference Manuals
» Part 16 – Service Calls
» Service_EnumerateFormats
» Block
Block
| Offset | Contents | |
|---|---|---|
| +0 | Pointer to next block, or 0 to terminate list | |
| +4 | Pointer to RMA block with text for Format submenu | |
| +8 | Pointer to RMA block with help text for Format submenu | |
| +12 | SWI to call to get raw disc format info | |
| +16 | R3 parameter for this SWI | |
| +20 | SWI to call to lay down disc structure | |
| +24 | R0 parameter for this SWI | |
| +28 | Flags: | |
| bit 0 set for native ADFS format | ||
| All other bits reserved, must be zero |
The block should be built in this order:
- Allocate block in RMA
- Zero offsets 4 and 8 (pointers to text)
- Link into list
- Allocate block in RMA for text at offset 4
- Link this to the block
- Allocate block in RMA for text at offset 8
- Link this to the block
- Copy text into the two RMA blocks
- Fill in the rest of the block
This allows an error to be returned by claiming the service and returning the intact list.