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cc65/libsrc/tgi/tgi_done.s
cuz 104ce990cb More work on the graphics subsystem
git-svn-id: svn://svn.cc65.org/cc65/trunk@1334 b7a2c559-68d2-44c3-8de9-860c34a00d81
2002-07-07 10:30:31 +00:00

25 lines
783 B
ArmAsm

;
; Ullrich von Bassewitz, 21.06.2002
;
; void __fastcall__ tgi_done (void);
; /* End graphics mode, switch back to text mode. Will NOT unload the driver! */
.include "tgi-kernel.inc"
.include "tgi-error.inc"
.export _tgi_done
_tgi_done:
lda _tgi_mode ; Is a graphics mode active?
beq @L1 ; Jump if not
jsr tgi_done ; Call the driver routine
jsr tgi_geterror ; Get the error code
sta _tgi_error ; Save it for reference
cmp #TGI_ERR_OK
bne @L1 ; Jump if we had an error
sta _tgi_mode ; Reset the current mode (A = 0)
@L1: rts