sped3_rotate.c

void sped3_rotate(unsigned int alpha)
{
    __asm
    {
        SET PUSH, Y

        .IMPORT _stubapi_locate_device
        SET A, 0x42ba
        SET B, 0xbf3c
        JSR [_stubapi_locate_device]

        SET PUSH, A
        SET A, 0x2
        SET X, <alpha>
        HWI POP

        SET Y, POP
    }
}