2003-04-15 20:47:29 +00:00
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; Ullrich von Bassewitz, 2003-04-15
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; unsigned char __fastcall__ ser_unload (void);
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; /* Unload the currently loaded driver. */
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.import ser_clear_ptr
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.include "ser-kernel.inc"
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.include "ser-error.inc"
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.include "modload.inc"
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2003-04-18 16:29:51 +00:00
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2003-04-15 20:47:29 +00:00
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_ser_unload:
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lda _ser_drv
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ora _ser_drv+1
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beq no_driver ; No driver
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jsr ser_uninstall ; Deinstall the driver
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lda _ser_drv
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ldx _ser_drv+1
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jsr _mod_free ; Free the driver
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jmp ser_clear_ptr ; Clear the driver pointer, return zero
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no_driver:
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tax ; X = 0
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lda #SER_ERR_NO_DRIVER
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rts
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