Atari 400 Technical Reference Manual page 326

ERR LINE ADDR
B1 B2 B3 B4
PRINTER *****
PRINTP.SRC
*****
3/9/79
***** 4:00 PAGE 65
2931
2932 EE78 A9 1E PHINIT: LDA #30
2933 EE7A
85 1C STA
PTIMOT iSET UP INITIAL PRINTER TIMEOUT OF 30 SEC.
2934 EE7C
60 RTS
2935
2936
2937
PRINTER HANDLER CONSTANTS
2938
2939 EE7D EA 02 PHSTLO: . WORD DVSTAT iSTATUS BUFFER POINTER
2940 EE7F CO 03 PHCHLO: . WORD PRNBUF
i
CHAR. BUFFER POINTER
2941
2942
2943
2944
************************
2945 PRI~TER HANDLER ROUTINES
2946 ************************
2947
2948
2949
2950
2951
2952 PRINTER HANDLER STATUS ROUTINE
2953
2954 EE81 A9 04 PHSTAT: LOA #4
2955 EE83 85 1E STA PBUFSZ
iSET BUFFER SIZE TO 4 BYTES
2956 EE85 AE 70 EE LDX PHSTLO
2957 EE88 AC 7E EE LOY PHSTLO+1 iSET POINTER TO STATUS BUFFER
2958 EE8B A9 53 LDA #STATC
iSET COMMAND TO "STATUS"
2959 EE8D 80 02 03 STA DCOMND iSET STATUS COMMAND
2960 EE90 8D OA 03 STA DAUXl
2961 EE93 20 E6 EE JSR SETDCB iGO SETUP DCB
2962 EE96 20 59 E4 JSR SIOV iSEND STATUS COMMAND
2963 EE99 30 03 BMI BADST
; GO IF ERROR
2964 EE9B 20 14 EF JSR PHPUT
i
YES, PUT STATUS INTO GLOBAL BUFFER.
2965 EE9E 60 BADST: RTS
2966
2967
2968
2969
2970
PRINTER HANDLER OPEN ROUTINE
2971
2972 EE9F 20 81 EE PHOPEN: JSR PHSTAT
iDO STATUS COMMAND TO SIO
2973 EEA2 A9 00 LDA
#0
2974 EEA4 85 1D STA PBPNT
iCLEAR PRINT BUFFER POINTER
2975 EEA6 60 RTS
2976
2977
2978
2979
2980 PRINTER HANDLER WRITE ROUTINE
2981
2982 EEA7 85 1F
PHWRIT; STA
PTEMP
; SAVE ACCUM
2983 EEA9 20 1A EF JSR PRMOOE
iGO DETERMINE PRINT MODE
2984 EEAC A6 10 LDX PBPNT