=> R1 = &6A (reason code)
R2 = pointer to linked list of format specifications
<= R1 = &6A (do not claim)
R2 = pointer to extended linked list
This service is issued to get information about available disc formats from softloaded modules. It should be issued whenever this information is requested, in case new modules mean more formats are now available. The service must not be claimed - rather it should be passed on with an extended list.
The service issuer is responsible for freeing the list and all data from the RMA after use, or if an error occurs during generation.
See PRM 2, page 494
Service_EnumerateFormats format block
Offset Meaning
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 FileCore format.
other bits 0 (reserved)
The block should be built in this order:
1 allocate block in RMA
2 zero offsets 4 and 8 (pointers to text)
3 link into list
4 allocate block in RMA for text at offset 4
5 link this to the block
6 allocate block in RMA for text at offset 8
7 link this to the block
8 *copy* text into the two RMA blocks
9 fill in the rest of the block
This allows an error to be returned by claiming the service and returning the intact list.
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