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Added functions to module stdiox
This commit is contained in:
Curtis F Kaylor
parent
ca3723e2a9
commit
0ec3d860e2
@ -2,6 +2,7 @@ Standard Input/Output Functions for C02 Programs
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At the beginning of the program use the directives
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#include <stddef.h02>
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#include <stdio.h02>
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The following functions are defined:
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164
doc/stdiox.txt
164
doc/stdiox.txt
@ -8,109 +8,129 @@ At the beginning of the program use the directives
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The following functions are defined:
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c = getprc(&s); Writes the string s, followed by a blank line,
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to the screen, then waits for a key to be pressed.
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c = getprc(&s); Writes the string s, waits for a key to be pressed.
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then writes blank line
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Returns the ASCII value of the key that was
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pressed.
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Returns the ASCII value of the key that was
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pressed.
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Note: Calls the puts function, the newlin
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function twice, then the getc function.
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Note: Calls the puts function, the newlin
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function twice, then the getc function.
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c = getprc(&s); Writes the string "Press any key to continue...",
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followed by a blank line, to the screen, then waits
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for a key to be pressed.
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c = anykey(); Writes the string "Press any key to continue...",
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followed by a blank line, to the screen, then waits
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for a key to be pressed.
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Returns the ASCII value of the key that was
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pressed.
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Returns the ASCII value of the key that was
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pressed.
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Note: Calls the getprc function, with a hard
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coded string.
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Note: Calls the getprc function, with a hard
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coded string.
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putdec(b); Writes the decimal representation of byte b to the
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screen. The output will be between one and three
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digits with no leading spaces.
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putspc(b); Writes a space character to the screen.
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Note: Calls part of the ctoa routine from stdlib
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which leaves the binary values of the ones, tens,
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and hundreds digits in variables temp0, temp1, and
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temp2, respectively.
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Note: Used by the putdel and putder functions.
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putdel(b); Writes the decimal representation of byte b to the
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screen. The output is left justified by appending it
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with 1 space if b is between 10 and 99, or two spaces
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if b is less than 10.
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putdec(b); Writes the decimal representation of byte b to the
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screen. The output will be between one and three
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digits with no leading spaces.
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Note: Calls putdec and putspc. Leaves the value
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of b in varible temp3.
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Note: Calls part of the ctoa routine from stdlib
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which leaves the binary values of the ones, tens,
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and hundreds digits in variables temp0, temp1, and
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temp2, respectively.
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putder(b); Writes the decimal representation of byte b to the
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screen. The output is right justified by prepending it
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with 1 space if b is between 10 and 99, or two spaces
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if b is less than 10.
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putdel(b); Writes the decimal representation of byte b to the
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screen. The output is left justified by appending it
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with 1 space if b is between 10 and 99, or two spaces
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if b is less than 10.
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Note: Calls putdec and putspc. Leaves the value
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of b in varible temp3.
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Note: Calls putdec and putspc. Leaves the value
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of b in varible temp3.
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putdst(); Prints the destination string set by the setdst or
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setstr functions.
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putder(b); Writes the decimal representation of byte b to the
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screen. The output is right justified by prepending it
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with 1 space if b is between 10 and 99, or two spaces
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if b is less than 10.
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This can be used to print the results of any function
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call that stores it's result in the destination string,
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such as strcat, strcpy, and strcut in string,
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Note: Calls putdec and putspc. Leaves the value
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of b in varible temp3.
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Note: calls putc and is called by printf when
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processing a %S formatting tag.
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puthex(b); Writes the hexadecimal representation of byte b to the
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screen. The output is always two hex digits, the first
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being a leading 0 if b is less than 16.
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putspc(b); Writes a space character to the screen.
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Note: Aliased to the prbyte routine.
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Note: Used by the putdel and putder functions.
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putwrd(&d); Writes the hexadecimal representation of address &d to
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the screen. The output is always four hex digits, with
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leading zeros if b is less than $1000.
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r = printf(b, &s): Writes the value of byte b to screen, formatting
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the output according the contents of string s.
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Note: Calls savrxy, saving the X and Y registers to
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temp1 and temp2, respectively, then calls puthex, once
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for the most significant byte and again for the least
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significant byte.
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The output consists of the characters in s, but with
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any formatting tags replaced with an ASCII
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representation of the value of b.
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putdst(); Prints the destination string set by the setdst or
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setstr functions.
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The recognized formatting tags are:
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%C - output the ASCII character represented by b
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%D - output b as a an unjustified decimal number
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%H - output b as a two-digit hexadecimal number
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%L - output b as a left justified decimal number
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%R - output b as a right justified decimal number
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%% - output a single % character
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This can be used to print the results of any function
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call that stores it's result in the destination string,
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such as strcat, strcpy, and strcut in string,
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Unlike the printf function in standard C, only
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one value argument may be passed and that value is
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used for each formatting tag in the format string.
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Note: calls putc and is called by printf when
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processing a %S formatting tag.
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One additional formatting tag is supported:
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%S - output the destination string
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r = printf(b, &s): Writes the value of byte b to screen, formatting
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the output according the contents of string s.
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The destination string is set using the setdst or
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strdst functions (from the "string" library) before
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calling printf. Multiple occurances of the %S tag
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will cause the destination string to be repeated.
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The output consists of the characters in s, but with
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any formatting tags replaced with an ASCII
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representation of the value of b.
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When tag types are mixed, the %S tag will output the
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destination string, while the other tags will output
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the formatted byte. If only the %S tag is used, then
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the byte argument may be excluded from the call.
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The recognized formatting tags are:
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%C - output the ASCII character represented by b
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%D - output b as a an unjustified decimal number
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%H - output b as a two-digit hexadecimal number
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%L - output b as a left justified decimal number
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%R - output b as a right justified decimal number
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%% - output a single % character
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The letter in the formatting tag may be upper or
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lower case with either a 0 or 1 in the high bit.
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Unrecognized formatting tags are interpreted as %C.
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Unlike the printf function in standard C, only
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one value argument may be passed and that value is
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used for each formatting tag in the format string.
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Note: Calls putdec, putdel, putder, prbyte, or
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putdst depending on which formatting tags are used.
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The value of b is left in variable temp3.
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Two additional formatting tag are supported:
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%S - output the destination string
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%W - output the destination address as a
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as a four-digit hexadecimal number
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The destination string and/or address is set using
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the setdst or strdst function (from the "string"
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library) before calling printf. Multiple occurances
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of the %S or %w tag will cause the destination string
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and/or address to be repeated.
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When tag types are mixed, the %S and/or %W tags will
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output the destination string and/or address, while
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the other tags will output the formatted byte. If
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only the %S and/or %W tags are used, then the byte
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argument may be excluded from the call.
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The letter in the formatting tag may be upper or
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lower case with either a 0 or 1 in the high bit.
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Unrecognized formatting tags are interpreted as %C.
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Note: Calls putdec, putdel, putder, puthex, putwrd,
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or putdst depending on which formatting tags are
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used. The value of b is left in variable temp3.
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Note: This library expects the following functions to be defined:
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cubcd(); Convert byte to BCD and unpack into three bytes
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prbyte(); Print byte to screen as hexadecimal number
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prchr(c); Print ASCII character to screen
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savrxy(); Save X and Y registers.
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setsrc(&s); Set source string pointer and initialize index
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along with the zero page variable pairs:
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@ -2,42 +2,67 @@
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; Requires external routines GETKEY, PRCHR, DELCHR, NEWLIN, and SETSRC
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; external zero page locations SRCLO and SRCHI
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; and external constants DELKEY, ESCKEY, and RTNKEY
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;char getc()
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;char getc() - GET Character from keyborad
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;Sets: System Dependent
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;Uses: System Dependent
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;Affects: System Dependent
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;Returns: A = Character Code of Key
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GETC EQU GETKEY ;Alias to external GETKEY routine
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;void putc(c)
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;void putc(c) - PUT Character to screen
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;Args: Character code to display
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;Sets: System Dependent
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;Uses: System Dependent
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;Affects: System Dependent
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;Returns: System Dependent
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PUTC EQU PRCHR ;Alias to external PRCHR Routine
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;char gets(&s)
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GETS: JSR SETSRC ;Initialize Source String
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GETSL: JSR GETC ;Get Keypress
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CMP #DELKEY ;If Delete
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BNE GETSE ;Then
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TYA ; If Offset is Zero
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BEQ GETSL ; Get Next Character
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DEY ; Else Decrement Offset
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JSR DELCHR ; Delete Previous Character
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JMP GETSL ; and Get Next Character
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GETSE: CMP #ESCKEY ;Else If Escape
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BNE GETSC ;Then
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LDY #$FF ; Return -1
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;char gets(&s) - GET String input from keyboard
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;Args: Y,X = Address of String
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;Sets: SRCLO,SRCLHI = Address of String
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;Affects: N,Z,C
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;Returns: A,Y = Number of Characters in String
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GETS: JSR SETSRC ;Initialize Source String
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GETSL: JSR GETC ;Get Keypress
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CMP #DELKEY ;If Delete
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BNE GETSE ;Then
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TYA ; If Offset is Zero
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BEQ GETSL ; Get Next Character
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DEY ; Else Decrement Offset
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JSR DELCHR ; Delete Previous Character
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JMP GETSL ; and Get Next Character
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GETSE: CMP #ESCKEY ;Else If Escape
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BNE GETSC ;Then
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LDY #$FF ; Return -1
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BNE GETSY
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GETSC: CMP #RTNKEY ;Else If Not Carriage Return
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GETSC: CMP #RTNKEY ;Else If Not Carriage Return
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BEQ GETSX
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JSR PUTC ; Echo Character
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STA (SRCLO),Y ; Store Character at offset
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INY ; increment offset and
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BPL GETSL ; loop if less than 128
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GETSX: JSR NEWLIN ;Else Advance Cursor to Next Line
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LDA #$00 ; Terminate String
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STA (SRCLO),Y ; and
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GETSY: TYA ; Return String Length
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JSR PUTC ; Echo Character
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STA (SRCLO),Y ; Store Character at offset
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INY ; increment offset and
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BPL GETSL ; loop if less than 128
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GETSX: JSR NEWLIN ;Else Advance Cursor to Next Line
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LDA #$00 ; Terminate String
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STA (SRCLO),Y ; and
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GETSY: TYA ; Return String Length
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RTS
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;char puts(&s)
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;char puts(&s) - PUT String to screen
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;Args: Y,X = Address of String
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;Calls: PUTS
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;Affects: N,Z,C
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;Returns: A,Y = Number of Characters in String
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PUTS: LDA #$00 ;Set Start Position to 0
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;and fall into putsub
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;char putsub(n, &s)
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;char putsub(n, &s) - PUT SUBstring to screen
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;Args: A = Starting Position in String
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; Y,X = Address of String
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;Sets: SRCLO,SRCLHI = Address of String
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;Calls: PUTC
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;Affects: N,Z,C
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;Returns: A,Y = Number of Characters in String
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PUTSUB: JSR SETSRC ;Initialize Source String
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TAY ;Initialize character offset
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PUTSUL: LDA (SRCLO),Y ;Read next character in string
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@ -48,6 +73,8 @@ PUTSUL: LDA (SRCLO),Y ;Read next character in string
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PUTSUX: TYA ;Return number of
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RTS ; characters printed
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;char putln(&s)
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;char putln(&s) - PUT LiNe to screen
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;Args: Y,X = Address of String
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;Calls: PUTS and NEWLIN
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PUTLN: JSR PUTS ;Write string to screen
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JMP NEWLIN ;Execute external NEWLINe routine and return
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@ -2,18 +2,33 @@
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ANYKEP: DC "Press any key to continue...",0
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;
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;char anykey() - wait for character with ANY KEY prompt
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;Calls: GETCPR, NEWLIN - Print Newline to Screen
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;Affects: C,N,Z
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;Returns: A = Character code of keypress
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ANYKEY: JSR NEWLIN ;Start at Beginning of Next Line
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LDY #>ANYKEP ;Load Prompt High Byte
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LDX #<ANYKEP ;Load Prompt Low Byte
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LDY #>ANYKEP ;Load Prompt High Byte
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LDX #<ANYKEP ;Load Prompt Low Byte
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;Drop into GETCPR
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;Display Prompt and Wait for Character
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GETCPR: JSR PUTLN ;Print Prompt
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;char getcpr(&s) - GET Character with PRompt
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;Args: Y,X = Address of Prompt String
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;Sets: TEMP0 - Character code of keypress
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;Calls: PUTS - Put String to Screen
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; GETC - Get Character from Keyboard
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; NEWLIN - Print Newline to Screen
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;Affects: C,N,Z
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;Returns: A = Character code of keypress
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GETCPR: JSR PUTS ;Print Prompt
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JSR GETC ;Wait for and Return Keypress
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STA TEMP0 ;Save Key Code
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JSR NEWLIN ;Move to Next Line
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JSR NEWLIN ;Generate Blank Line
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JMP GETC ;Wait for and Return Keypress
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LDA TEMP0 ;Load Key Code
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RTS
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;Print Byte as Left Justified Decimal Number
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;void putdel(b)
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;void putdel(b) - PUT DEcimal Left justified
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;Args: A = number to print
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;Sets: TEMP0 - ones digit
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; TEMP1 - tens digit
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@ -33,8 +48,7 @@ PUTDET: CMP #10 ; If Number < 10
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JSR PUTSPC ; Print another Space
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PUTDEX: RTS
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;Print Byte as Right Justified Decimal Number
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;void putder(b)
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;void putder(b) - PUT DEcimal Right justified
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;Args: A = number to print
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;Sets: TEMP0 - ones digit
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; TEMP1 - tens digit
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@ -44,8 +58,7 @@ PUTDER: STA TEMP3
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PUTDES: JSR PUTDEH
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LDA TEMP3
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;Print Byte as Decimal Number
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;void putdec(b)
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;void putdec(b) - PUT DECimal
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;Args: A = number to print
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;Sets: TEMP0 - ones digit
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; TEMP1 - tens digit
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@ -64,15 +77,34 @@ PUTDEP: ORA #$30 ;Convert to ASCII digit
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JSR PRCHR ;And Print
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RTS
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;puthex(&word) - PUT HEXadecimal
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PUTHEX EQU PRBYTE ;Print Byte as Hexadecimal
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;putwrd(&word) - PUT WoRD
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;Args: Y = Word MSB
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; X = Word LSB
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;Calls: PUTS = Put String
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; PRBYTE = Print Byte
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; SAVRXY = Save X and Y Registers
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;Affects: A,Y,X,N,Z,C
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PUTWRD: JSR SAVRXY ;Save Address
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PUTWRA: LDA TEMP2 ;Load Address MSB
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JSR PRBYTE ;Print as Hexadecimal
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LDA TEMP1 ;Load Address LSB
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JMP PRBYTE ;Print and Return`
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;Print a Space
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PUTSPC: LDA #32 ;Load Space Character
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JMP PRCHR ;and Print it
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;Print Byte in Formatted String
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;void printf(b, &s)
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;Args: A = number to format
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;void printf(b, &s) - PRINT Formatted byte and/or string
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;Args: A = byte to format
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; Y,X = address of formatting string
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;Sets: TEMP3 - number to format
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;Uses: DSTLO,DSTHI = Address of %S string
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;Sets: SRCLO,SRCHI = Address of formatting string
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; TEMP3 - number to format
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;Destroys: TEMP0,TEMP1,TEMP2
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;Returns: A,Y = Total number of characters printed
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PRINTF: JSR SETSRC ;Initialize Source String
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STA TEMP3 ;Save Byte to Format
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PRINTL: LDA (SRCLO),Y ;Read next character in string
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@ -108,14 +140,21 @@ PRINTD: CMP #'D ;'Else If "d" or "D"
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PRINTH: CMP #'H ;'Else If "h" or "H"
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BNE PRINTS
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LDA TEMP3 ; Load Byte to Format
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JSR PRBYTE ; Print as Hexadecimal
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JSR PUTHEX ; Print as Hexadecimal
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JMP PRINTY ; and Continue Printing Screen
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PRINTS: CMP #'S ;'Else If "s" or "s"
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BNE PRINTB
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PRINTS: CMP #'S ;'Else If "s" or "S"
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BNE PRINTW
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STY TEMP0 ; Save Index
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JSR PUTDST ; Print Destination String
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LDY TEMP0 ; Restore Index
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JMP PRINTY ;
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PRINTW: CMP #'W ;'Else If "w" or "W"
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BNE PRINTB
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STY TEMP0 ; Save Index
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JSR SAVDST ; Save Destination Address
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JSR PUTWRA ; Print MSB and LSB as Hex
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LDY TEMP0 ; Restore Index
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JMP PRINTY ;
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PRINTB: LDA TEMP3 ;Else
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JMP PRINTC ; Print Raw Byte and Continue
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@ -8,7 +8,7 @@
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#include <stdio.h02>
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#include <stdiox.h02>
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char c, i;
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char c, i, j;
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char s = "string";
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main:
|
||||
@ -44,17 +44,43 @@ do {
|
||||
} while (i);
|
||||
anykey();
|
||||
|
||||
putln("prthex()");
|
||||
do {
|
||||
if (i<32) printf(" H='%h' R='%r' L='%l' D='%d'");
|
||||
else printf("C='%c' H='%h' R='%r' L='%l' D='%d'");
|
||||
newlin();
|
||||
puthex(i);
|
||||
putc(':');
|
||||
i++;
|
||||
if (!i&15) anykey();
|
||||
if (!i&15) newlin();
|
||||
} while (i);
|
||||
anykey();
|
||||
|
||||
putln("prtwrd()");
|
||||
do {
|
||||
j = i ^ $FF;
|
||||
putwrd(*,i,j);
|
||||
putc(':');
|
||||
i++;
|
||||
if (!i&15) newlin();
|
||||
} while (i);
|
||||
anykey();
|
||||
|
||||
do {
|
||||
pfchar(i); putc($09); pfchar(i+16); newlin();
|
||||
i++; if (!i&15) {i = i + 16; anykey(); }
|
||||
} while (i<128);
|
||||
|
||||
setdst(&s);
|
||||
printf("S=\"%s\"");
|
||||
newlin();
|
||||
|
||||
setdst(&$1234);
|
||||
printf("&$1234=%w");
|
||||
newlin();
|
||||
|
||||
done:
|
||||
goto exit;
|
||||
|
||||
void pfchar(c) {
|
||||
if (c<32) printf(c," H='%h' R='%r' L='%l' D='%d'");
|
||||
else printf(c,"C='%c' H='%h' R='%r' L='%l' D='%d'");
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user