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cc65/libsrc/atmos/capslock.s

51 lines
1.1 KiB
ArmAsm

;
; When Oric computers are in BASIC's command mode, the keyboard is in CAPS lock
; mode (because Oric BASIC keywords must be typed in upper-case). This
; constructor disables that mode, so that text will be typed as lower-case
; (which is the default on other cc65 platforms).
; This module is linked by the conio and POSIX input functions.
;
; 2014-09-04, Greg King
;
.constructor disable_caps
.destructor restore_caps
.include "atmos.inc"
;--------------------------------------------------------------------------
; Put this constructor into a segment whose space
; will be re-used by BSS, the heap, and the C stack.
;
.segment "ONCE"
; Turn the capitals lock off.
disable_caps:
lda CAPSLOCK
sta capsave
lda #$7F
sta CAPSLOCK
rts
;--------------------------------------------------------------------------
.code
; Restore the old capitals-lock state.
restore_caps:
lda capsave
sta CAPSLOCK
rts
;--------------------------------------------------------------------------
.segment "INIT"
capsave:
.res 1