Atari 400 Technical Reference Manual page 286

ERR LINE ADDR B1 B2 B3 B4 CENTRAL INPUT/OUTPUT (CIO) 2-7-79 PAGE 25
1061
. PAGE
1062
1063
i
CIO RETURNS
1064
i
RETURNS WITH Y=STATUS
1065 E61B 84 23 C IRTN1: STY
ICSTAZ
i
SAVE STATUS
1066
1067
i
RETURNS WITH STATUS STORED IN ICSTAZ
1068
i
MOVE IOCB IN ZERO PAGE BACK TO USER AREA
1069 E61D A4 2E CIRTN2: LOY ICIDNO iGET IOCB INDEX
1070 E61F B9 44 03 LOA ICBAL Y
1071 E622 85 24
STA ICBALZ
iRESTORE USER BUFFER POINTER
1072 E624 B9 45 03
LOA
ICBAH,Y
1073 E627 85 25
STA ICBAHZ
1074 E629 A2 00 LDX
#0
iLOOP COUNT AND INDEX
1075 E62B B5 20 CIRT3: LOA IOCBAS, X
i
ZERO PAGE
1076 E620 99 40 03 STA IOCB,Y
j
TO USER AREA
1077 E630 E8 INX
1078 E631 C8 INY
1079 E632
EO OC CPX
#12
i
12 BYTES
1080 E634
90 FS BCC CIRT3
1081
1082 RESTORE A, X,
8t.
Y
1083 E636 AS 2F LOA CIOCHR
iGET
LAST CHARACTER
1084 E638 A6 2E LDX ICIDNO
i
IOCB INDEX
1085
E63A
A4 23 LOY ICSTAZ
iGET STATUS AND SET FLAGS
1086 E63C 60 RTS iRETURN TO USER