diff --git a/doc/screen.txt b/doc/screen.txt index bda3bf6..719464d 100644 --- a/doc/screen.txt +++ b/doc/screen.txt @@ -39,9 +39,7 @@ The following functions should be defined: w,h = getsiz (); Returns the current screen or window width and height in rows and columns. - Note: Returns 255 for both the width and height if - the platform does not support any sort of screen display. - - Returns 0 for width or height if either or both are - variable and the current value cannot be determined via - software. + Note: Returns 255 for width and/or height if either or + both are cannot be determined via software. Since all + supported platforms have less than 128 screen rows and + columns, the :- test can be used on these values. diff --git a/include/stdio.a02 b/include/stdio.a02 index 1cb032d..d3725ee 100644 --- a/include/stdio.a02 +++ b/include/stdio.a02 @@ -8,7 +8,7 @@ ;Uses: System Dependent ;Affects: System Dependent ;Returns: A = Character Code of Key -GETC EQU RDKEY ;Alias to external RDKEY routine +GETC EQU GETCHR ;Alias to external GETCHRroutine ;void putc(c) - PUT Character to screen ;Args: Character code to display @@ -16,7 +16,7 @@ GETC EQU RDKEY ;Alias to external RDKEY routine ;Uses: System Dependent ;Affects: System Dependent ;Returns: System Dependent -PUTC EQU PRCHR ;Alias to external PRCHR Routine +PUTC EQU PUTCHR ;Alias to external PUTCHRRoutine ;char gets(&s) - GET String input from keyboard ;Args: Y,X = Address of String diff --git a/include/stdiox.a02 b/include/stdiox.a02 index 52148d2..ff95cf3 100644 --- a/include/stdiox.a02 +++ b/include/stdiox.a02 @@ -28,6 +28,20 @@ GETCPR: JSR PUTS ;Print Prompt LDA TEMP0 ;Load Key Code RTS +;void putbin(b) - PUT Binary +;Args: A = number to print +;Sets: TEMP0 = 0 +;Affects: A,Y,C,N,X +PUTBIN: STA TEMP0 ;Save Number + LDX #8 ;Print 8 Binary Digits +PUTBIL: LDA #0 + ASL TEMP0 ;Shift Top Bit Out + ADC #$30 ;Convert to '0' or '1' + JSR PUTCHR ;Print Digit + DEX ;Decremebt Index + BNE PUTBIL ;Loop if Not Done + RTS + ;void putdel(b) - PUT DEcimal Left justified ;Args: A = number to print ;Sets: TEMP0 - ones digit @@ -74,7 +88,7 @@ PUTDE1: LDA TEMP1 ;Get Low Byte PUTDE2: JSR PUTDEP ; Convert It PUTDE3: LDA TEMP0 ;Get Low Byte PUTDEP: ORA #$30 ;Convert to ASCII digit - JSR PRCHR ;And Print + JSR PUTCHR ;And Print RTS ;puthex(&word) - PUT HEXadecimal @@ -95,7 +109,7 @@ PUTWRA: LDA TEMP2 ;Load Address MSB ;Print a Space PUTSPC: LDA #32 ;Load Space Character - JMP PRCHR ;and Print it + JMP PUTCHR ;and Print it ;void printf(b, &s) - PRINT Formatted byte and/or string ;Args: A = byte to format @@ -111,7 +125,7 @@ PRINTL: LDA (SRCLO),Y ;Read next character in string BEQ PRINTX ;If Not 0 CMP #'% ;' If Format Specified BEQ PRINTP ; Jump to Formatter -PRINTC: JSR PRCHR ; Print character at offset, +PRINTC: JSR PUTCHR ; Print character at offset, PRINTY: INY ; increment offset, and BPL PRINTL ; loop if less than 128 PRINTX: RTS ; characters printed @@ -126,26 +140,31 @@ PRINTP: INY ;Increment Offset BNE PRINTR LDA TEMP3 ; Load Byte to Format JSR PUTDEM ; Print Left Justified - JMP PRINTY ; and Continue Printing Screen + JMP PRINTY ; and Continue Printing String PRINTR: CMP #'R ;'If "r" or "R" BNE PRINTD LDA TEMP3 ; Load Byte to Format JSR PUTDES ; Print Right Justified - JMP PRINTY ; and Continue Printing Screen + JMP PRINTY ; and Continue Printing String PRINTD: CMP #'D ;'Else If "d" or "D" BNE PRINTH LDA TEMP3 ; Load Byte to Format JSR PUTDEC ; Print as Decimal - JMP PRINTY ; and Continue Printing Screen + JMP PRINTY ; and Continue Printing String PRINTH: CMP #'H ;'Else If "h" or "H" - BNE PRINTN + BNE PRINTB LDA TEMP3 ; Load Byte to Format JSR PUTHEX ; Print as Hexadecimal - JMP PRINTY ; and Continue Printing Screen + JMP PRINTY ; and Continue Printing String +PRINTB: CMP #'B ;'Else If "b" or "B" + BNE PRINTN + LDA TEMP3 ; Load Byte to Format + JSR PUTBIN ; Print as Binary + JMP PRINTY ; and Continue Printing String PRINTN: CMP #'N ;'Else If "n" or "N" BNE PRINTS JSR NEWLIN ; Execute Newline Function - JMP PRINTY ; and Continue Printing Screen + JMP PRINTY ; and Continue Printing String PRINTS: CMP #'S ;'Else If "s" or "S" BNE PRINTW STY TEMP0 ; Save Index @@ -153,13 +172,13 @@ PRINTS: CMP #'S ;'Else If "s" or "S" LDY TEMP0 ; Restore Index JMP PRINTY ; PRINTW: CMP #'W ;'Else If "w" or "W" - BNE PRINTB + BNE PRINTZ STY TEMP0 ; Save Index JSR SAVDST ; Save Destination Address JSR PUTWRA ; Print MSB and LSB as Hex LDY TEMP0 ; Restore Index JMP PRINTY ; -PRINTB: LDA TEMP3 ;Else +PRINTZ: LDA TEMP3 ;Else JMP PRINTC ; Print Raw Byte and Continue ;char putdst() diff --git a/include/stdiox.h02 b/include/stdiox.h02 index beba0eb..4ee8bd3 100644 --- a/include/stdiox.h02 +++ b/include/stdiox.h02 @@ -12,13 +12,17 @@ void anykey(); * Returns: ASCII value of key pressed */ void getcpr(); -/* Print Formatted Byte to Screen * - * Args: b - byte to format * - * &s - formatting string */ +/* Print Formatted Byte to Screen * + * Args: b - byte to format * + * &s - formatting string */ void printf(); -/* Print Byte as Decimal Number * - * Args: b - Number to print */ +/* Print Byte as Binary Number * + * Args: b - Number to print */ +void putbin(); + +/* Print Byte as Decimal Number * + * Args: b - Number to print */ void putdec(); /* Print Byte as Left Justified Decimal * @@ -32,6 +36,10 @@ void putder(); /* Print Destination String */ void putdst(); +/* Print Byte as Hexadecimal Number * + * Args: b - Number to print */ +void puthex(); + /* Print a Space Character */ void putspc();