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31 lines
750 B
ArmAsm
31 lines
750 B
ArmAsm
;
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; Ullrich von Bassewitz, 2002-11-29
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;
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; unsigned char em_unload (void);
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; /* Unload the currently loaded driver. */
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.import em_clear_ptr
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.include "em-kernel.inc"
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.include "em-error.inc"
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.include "modload.inc"
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_em_unload:
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lda _em_drv
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ora _em_drv+1
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beq no_driver ; No driver
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jsr emd_uninstall ; Deinstall the driver
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lda _em_drv
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ldx _em_drv+1
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jsr _mod_free ; Free the driver
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jmp em_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 #EM_ERR_NO_DRIVER
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rts
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