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cc65/libsrc/em/em_unload.s

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ArmAsm
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;
; Ullrich von Bassewitz, 2002-11-29
;
; unsigned char __fastcall__ em_unload (void);
; /* Unload the currently loaded driver. */
.include "em-kernel.inc"
.include "em-error.inc"
.include "modload.inc"
.import return0
_em_unload:
lda _em_drv
ora _em_drv+1
beq no_driver ; No driver
jsr _em_deinstall ; Deinstall the driver
lda _em_drv
ldx _em_drv+1
jsr _mod_free ; Free the driver
jmp return0
no_driver:
tax ; X = 0
lda #EM_ERR_NO_DRIVER
rts