Atari 400 Technical Reference Manual page 325

ERR LINE ADDR B1 B2 B3 B4 DISK ***** DISKP.SRC ***** 3/9/79 ***** 4:00:00 PAGE 64
2877 . PAGE
2878
· TITLE
'PRINTER
***** PRINTP.SRC ***** 3/9/79 *****
4:00:00 P
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890 DEVICE NUMBER OR CODE EGUATES
2891
2892 0002 OPNOUT = $2
i
IOCB OPEN FOR OUTPUT COMMAND
2893 0028 NBUFSZ = 40 iPRINT NORMAL BUFFER SIZE
2894 0014 DBUFSZ = 20 iPRINT DOUBLE BUFFFER SIZE
2895 001D SBUFSZ 29 iPRINT SIDEWAYS BUFFER SIZE
2896 0040 PDEVN = $40 iPRINTER DEVICE NUMBER
2897
i
STATC
$53
iDCB STATUS COMMAND CODE
2898 0057 WRITEC
$57
iDCB WRITE COMMAND
2899 0020 SPACE $20
i
ASC I I SPACE CHAR.
2900 004E N $4E
i
ASC I I tlN" CHAR.
2901 0044 D $44
i
ASC I I "DtI CHAR.
2902 0053 S $53
i
ASC I I "SI1 CHAR.
2903
2904
2905 PRINTER HANDLER ENTRY POINTS
2906
2907
2908
2909
2910
*=$E430
2911
2912 E430 9E EE
· WORD
PHOPEN-l iPRINTER HANDLER OPEN
2913 E432 DB EE
· WORD
PHCLOS-1 ; PH CLOSE
2914 E434 9D EE
· WORD
BADST-l
iPH
READ
2915 E436 A6 EE
· WORD PHWRIT-l
iPH
WRITE
2916 E438
80 EE
· WORD
PHSTAT-1 iPH STATUS
2917 E43A 9D EE
· WORD
BADST-l
i
PH SPECIAL
2918 E43C 4C 78 EE
JMP PHINIT
i
PH INIT.
2919 E43F 00
· BYTE
0 iROM FILLER
2920
2921
2922
2923
2924
2925
*=PRNORG
2926
2927
2928
2929
2930 PRINTER HANDLER INITIALIZATION ROUTINE