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cc65/libsrc/conio/scrsize.s
cuz 37178d5141 Make screensize() fetch the values dynamically instead of using variables
that are set on startup. This is needed to support the C128, which can switch
the screen size at runtime.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2042 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-04-09 19:34:57 +00:00

36 lines
630 B
ArmAsm

;
; Ullrich von Bassewitz, 08.08.1998
;
; void screensize (unsigned char* x, unsigned char* y);
;
.export _screensize
.import popsreg
.import screensize
.importzp ptr1, sreg
.proc _screensize
sta ptr1 ; Store the y pointer
stx ptr1+1
jsr popsreg ; Get the x pointer into sreg
jsr screensize ; Get screensize into X/Y
tya ; Get Y size into A
.IFP02
ldy #0
sta (ptr1),y
txa
sta (sreg),y
.ELSE
sta (ptr1)
txa
sta (sreg)
.ENDIF
rts
.endproc