1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-24 11:31:31 +00:00
cc65/libsrc/geos-common/conio/_scrsize.s

52 lines
1015 B
ArmAsm

;
; Maciej 'YTM/Elysium' Witkowiak
;
; Screen size variables
;
; 6.3.2001, 17.4.2003
.export xsize, ysize
.export screensize
.importzp cursor_r, cursor_c
.import _cursor
.constructor initscrsize
.include "geossym.inc"
.segment "INIT"
initscrsize:
.ifdef __GEOS_CBM__
lda graphMode
bpl L1
lda #80 ; 80 columns (more or less)
.byte $2c
L1: lda #40 ; 40 columns (more or less)
sta xsize
lda #25 ; something like that for Y size
.else
lda #70 ; 70 columns (more or less)
sta xsize
lda #24 ; something like that for Y size
.endif
sta ysize
lda #0
sta cursor_c
sta cursor_r
jmp _cursor ; home and update cursor
.code
screensize:
ldx xsize
ldy ysize
rts
.bss
xsize:
.res 1
ysize:
.res 1