Commodore Amiga A500 Technical Reference Manual page 55

6. InitResident () the loaded code. If an error (NULL) is returned,
UnLoadSeg () the segment
your driver code:
Find the list of boards. Mark them a configured, and record
your driver in them (for system debugging). Return non-zero
value if everything went ok. If something went wrong (or you
just want to be unloaded) then return NULL.
Now for some more detail.
1. GetDiskObject () is a routine in icon.library. It will read in the disk
object and return a pointer to it. Part of a disk object structure is
a "tooltypes" field.
2. The FindToolType () routine (also in the icon.library) searches the
tooltypes database associated with the disk object If there is an
entry for PRODUCT then it is assumed that this is an info file for
a driver. The PRODUCT field is of the format:
PRODUCT = <idlist>
<idlist> ::= <id> | <idlist>BAR<id>
<id> ::= <manufacturer> | < manufactured SLASH <product>
<manufacturer> ::= <a decimal number>
<product> ::= <a decimal number>
BAR :: = <a vertical bar — "|'>
SLASH ::= <a forwards slant char — "/'>
Spaces are not legal. Some examples:
PRODUCT = 1000/30
PRODUCT = 1000
PRODUCT = 1000/20| 1000/21; matches man 1000, product 20
3. Each unconfigured board in the system is searched. An unconfi-
gured board has the CDB_CONFIGME bit set in the ccLFIags byte.
Search all these unconfigured boards to find the ones that match
any of the product codes. Link all these boards together using the
ccLNextCD field of the ConFigDev structure. Record the head of
this list, along with the product field and the name of the file that
was loaded in a CurrentBinding structure. This structure may be
retrieved via the GetCurrentBinding () call.
4. Attempt to load in the driver. The driver may be a devices,
library, task, process, or anything else that you may want. The
only requirement is that it have a Resident structure in its first
hunk. (By the way, this means that you can not directly use
startup.obj).
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; matches man 1000, product 30
; matches any man 1000 board
or 21