mirror of
https://github.com/cc65/cc65.git
synced 2024-10-31 04:04:49 +00:00
30 lines
403 B
ArmAsm
30 lines
403 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 23.09.1998
|
|
;
|
|
; unsigned readjoy (unsigned char joy);
|
|
;
|
|
|
|
.export _readjoy
|
|
|
|
.include "../plus4/plus4.inc"
|
|
|
|
|
|
.proc _readjoy
|
|
|
|
ldy #$FA ; Load index for joystick #1
|
|
tax ; Test joystick number
|
|
beq L1
|
|
ldy #$FB ; Load index for joystick #2
|
|
L1: sei
|
|
sty TED_KBD
|
|
lda TED_KBD
|
|
cli
|
|
ldx #$00 ; Clear high byte
|
|
and #$1F
|
|
eor #$1F
|
|
rts
|
|
|
|
.endproc
|
|
|
|
|