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The Datafile PD-CD 1 Issue 2
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PDCD-1 - Issue 02.iso
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_utilities
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utilities
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001
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serialde
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h
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example
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1993-01-20
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/* Maximum driver length - 4k */
int driver_block[1024];
/* The correct driver load prototype so that C doesn't moan */
extern int (*driver_load(char*))(int,...);
/*
Use driver_init() to build driver list - you can use the text
to build a driver menu if you want. Note that the #defines
in the driver.h file assume a global int 'portnumber' which
defines the current port. You could always alter the defines
accordingly if you want to pass the portnumber yourself.
Load a driver like this:
if ((driver=driver_load("internal"))==NULL)
{
error - can't load driver
}
driver_initialise();
You can call the driver either with the defined methods or
eg: (*driver)(DRIVER_functioncode,portnumber,data,...)
All the driver functions return in r0, hence are accessible
by C.
You may want to munge the driver_load, eg to load to malloc'ed
buffer space or similar - feel free. This is just an example.
*/