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cc65/libsrc/tgi/tgi_textstyle.s
cuz 8ecdf9d6b7 Renamed ..._deinstall -> ..._uninstall.
Rename tgi_setup to tgi_install.
Make tgi_install and tgi_deinstall user callable.
More cosmetic changes.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1966 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-02-11 12:37:46 +00:00

44 lines
1.0 KiB
ArmAsm

;
; Ullrich von Bassewitz, 22.06.2002
;
; void __fastcall__ tgi_textstyle (unsigned char magx, unsigned char magy,
; unsigned char dir);
; /* Set the style for text output. */
.include "tgi-kernel.inc"
.import popax, incsp2
.proc _tgi_textstyle
pha
jsr popax ; Get magx/magy in one call
tay
pla
; A = textdir, X = textmagx, Y = textmagy
cmp #TGI_TEXT_HORIZONTAL
beq DirOk
cmp #TGI_TEXT_VERTICAL
beq DirOk
Fail: jmp tgi_inv_arg ; Invalid argument
DirOk: cpy #$00
beq Fail ; Cannot have magnification of zero
cpx #$00
beq Fail ; Cannot have magnification of zero
; Parameter check ok, store them
stx _tgi_textmagx
sty _tgi_textmagy
sta _tgi_textdir
; Call the driver, parameters are passed in registers
jmp tgi_textstyle
.endproc