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Tried to use CR sub buit it didn't work

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Bill Chatfield 2024-02-25 13:53:21 -05:00
parent 8ace07d469
commit 0add3cc9d7
1 changed files with 61 additions and 50 deletions
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37
more.merlin.s
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@ -44,7 +44,7 @@
*
* SYSTEM VARIABLES
*
PTR EQU $06 ;ONLY FREE 0-PAGE LOCATION
PTR EQU 06 ;ONLY FREE 0-PAGE LOCATION
CH EQU $24 ;40-COL HORZ CURS POSITION
CV EQU $25 ;40-COL VERT CURS POSITION
PROMPT EQU $33 ;PROMPT CHARACTER
@ -60,6 +60,7 @@ OURCV EQU $05FB ;VERTICAL CURSOR POSITION
*
* SUBROUTINES IN MONITOR ROM: $F800 - $FFFF
*
CR EQU $FC62 ;CURSOR TO BEG OF NEXT LINE
RDKEY EQU $FD0C ;READS A CHARACTER
GETLN EQU $FD6A ;READS A LINE, WITH PROMPT($33)
GETLN1 EQU $FD6F ;READS A LINE, NO PROMPT
@ -98,7 +99,7 @@ CLOSEPARMCNT EQU 1
*
* ASCII
*
CR EQU $0D ;ASCII CARRIAGE RETURN
CR_CHAR EQU $0D ;ASCII CARRIAGE RETURN
CR_HIBIT EQU $8D ;CARRIAGE RET WITH HIGH BIT SET
*
* CONSTANTS
@ -153,7 +154,7 @@ CPIN MAC
LOOP CPY ]1 ;COMPARE Y WITH LENGTH BYTE
BEQ ENDLOOP ;DONE IF LENGTH IS REACHED
LDA IN,Y ;LOAD IN[Y] INTO ACCUMULATOR
CMP #CR ;COMPARE WITH CARRIAGE RETURN
CMP #CR_CHAR ;COMPARE WITH CARRIAGE RETURN
BEQ ENDLOOP ;STOP AT CARRIAGE RETURN
INY ;DEST STR IS 1 AHEAD OF IN BUF
STA ]1,Y ;COPY CHAR TO DEST STR ]1
@ -350,6 +351,7 @@ GET_SCRN_WDTH LDA #128
JMP :END
:EIGHTY_COLUMNS LDA #80
STA SCR_WDTH
JSR PRBYTE
:END NOP
RTS
@ -504,6 +506,7 @@ VIEWFILE
PUTS ENVIEW
FIN
COPY_B SCRNLINE;#1 ;INIT SCREEN LINE NUMBER
COPY_B LINEIDX;#1 ;POSITION IN LINE
:LOOP JSR PRODOS_MLI ;CALL PRODOS TO READ FILE
DB READ ;SPECIFY PRODOS READ COMMAND
@ -534,7 +537,7 @@ WRITEBUF PUSHY
*
* CHECK AT END OF PAGE
*
LDA CV ;CURSOR VERTICAL SCREEN LINE
LDA SCRNLINE ;CURSOR VERTICAL SCREEN LINE
CMP #SCR_HGHT ;AT BOTTOM OF SCREEN?
BNE :CONT ;NO? THEN NEXT CHAR
JSR STATBAR ;YES? THEN SHOW THE STATUS BAR
@ -556,22 +559,30 @@ WRITEBUF PUSHY
* *
* WRITE CHAR TO SCREEN *
* CLIPS TO SCREEN WIDTH *
* PRESERVES ACCUMULATOR *
* *
********************************
WRITECHAR STA CHAR ;DON'T LOOSE THE CHARACTER
CMP #CR_HIBIT ;COMPARE TO CARRIAGE RETURN
BNE :NOT_EOL ;IF NOT END OF LINE, PRINT
INC CV ;FORCE DOWN 1 LINE ON SCREEN
COPY_B LINEIDX;#1 ;RESET TO BEGINNING OF LINE
JSR DOWN1LINE
JMP :ENDSUB ;NOTHING MORE TO DO FOR EOL
:NOT_EOL LDA LINEIDX ;GET CURSOR HORIZ COL
CMP SCR_WDTH ;COMPARE WITH SCREEN WIDTH
BPL :ENDSUB ;DON'T PRINT IF OFF SCREEN
BPL :FORWARD ;DON'T PRINT IF OFF SCREEN
LDA CHAR ;ON SCREEN, SO PRINT IT
JSR COUT
INC LINEIDX
:ENDSUB LDA CHAR
:FORWARD INC LINEIDX
:ENDSUB RTS
********************************
* *
* GO TO BEGINNING OF NEXT LINE *
* *
********************************
DOWN1LINE INC SCRNLINE ;KEEP TRACK OF LINE NUMBER
COPY_B LINEIDX;#1 ;RESET TO BEGINNING OF LINE
;COPY_B OURCH;#0
JSR CROUT ;LINE DOWN & SCROLL IF NEEDED
RTS
********************************
@ -607,11 +618,11 @@ STATBAR
:LOOP JSR RDKEY ;GET A KEY FROM THE USER
CMP #" " ;CHECK IF SPACE ENTERED
BNE :CHKCR ;IF NOT FORWARD TO NEXT CHECK
SET1 LINENUM ;ADVANCE ONE PAGE, STORE 1
SET1 SCRNLINE ;ADVANCE ONE PAGE, STORE 1
JMP :ENDLOOP ;PROCESSED SPACE SO DONE
:CHKCR CMP #CR_HIBIT ;CHECK FOR CARRIAGE RETURN
BNE :CHKQUIT
SET23 LINENUM
SET23 SCRNLINE
JMP :ENDLOOP
:CHKQUIT CMP #"Q" ;USER WANTS TO QUIT
BEQ :QUITTING ;NO RECOGNIZED INPUT
@ -844,7 +855,7 @@ ERRTXT STR "ERROR:"
FILENAME DS $FF
PREFIX DS 64
ERRCODE DS 1
LINENUM DS 1
SCRNLINE DS 1
LINEIDX DS 1
CHAR DS 1
BAR STR '[RET] LINE [SPC] PAGE [Q]UIT'