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acia - receive test optimisation

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Phillip Stevens
2021-02-09 18:11:40 +11:00
parent 36ba566c95
commit 38531bc983
1 changed files with 2 additions and 2 deletions
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Source/HBIOS/acia.asm
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@@ -180,8 +180,8 @@ ACIA_INTRCV:
; CHECK TO SEE IF SOMETHING IS ACTUALLY THERE
LD C,(IY+3) ; CMD/STAT PORT TO C
IN A,(C) ; GET STATUS
AND $01 ; ISOLATE RECEIVE READY BIT
RET Z ; NOTHING AVAILABLE ON CURRENT CHANNEL
RRA ; READY BIT TO CF
RET NC ; NOTHING AVAILABLE ON CURRENT CHANNEL
;
ACIA_INTRCV1:
; RECEIVE CHARACTER INTO BUFFER