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Fixed cgetc().

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The GETIN function doesn't protect CPU registers.
This commit is contained in:
Greg King 2019-10-01 05:30:36 -04:00
parent 3cece61525
commit 9dfc8f84bc
1 changed files with 3 additions and 1 deletions
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4
libsrc/cx16/cgetc.s
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@ -1,5 +1,5 @@
; ;
; 2019-09-23, Greg King ; 2019-10-01, Greg King
; ;
; char cgetc (void); ; char cgetc (void);
; /* Return a character from the keyboard. */ ; /* Return a character from the keyboard. */
@ -34,7 +34,9 @@ L1: lda KEY_COUNT
L3: ldy IN_DEV ; Save current input device L3: ldy IN_DEV ; Save current input device
stz IN_DEV ; Keyboard stz IN_DEV ; Keyboard
phy
jsr GETIN ; Read char, and return in .A jsr GETIN ; Read char, and return in .A
ply
sty IN_DEV ; Restore input device sty IN_DEV ; Restore input device
ldx #>$0000 ldx #>$0000
rts rts