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Added functions to module 'stdiox'

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This commit is contained in:
Curtis F Kaylor 2018-07-27 14:11:39 -04:00
parent 27b3636901
commit ca3723e2a9
6 changed files with 65 additions and 27 deletions
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48
doc/stdiox.txt
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@ -2,16 +2,36 @@ Extended Input/Output Functions for C02 Programs
At the beginning of the program use the directives
#include <stddef.h02>
#include <stdlib.h02>
#include <stdiox.h02>
The following functions are defined:
c = getprc(&s); Writes the string s, followed by a blank line,
to the screen, then waits for a key to be pressed.
Returns the ASCII value of the key that was
pressed.
Note: Calls the puts function, the newlin
function twice, then the getc function.
c = getprc(&s); Writes the string "Press any key to continue...",
followed by a blank line, to the screen, then waits
for a key to be pressed.
Returns the ASCII value of the key that was
pressed.
Note: Calls the getprc function, with a hard
coded string.
putdec(b); Writes the decimal representation of byte b to the
screen. The output will be between one and three
digits with no leading spaces.
Note: Calls part of the ctoa() routine from stdlib
Note: Calls part of the ctoa routine from stdlib
which leaves the binary values of the ones, tens,
and hundreds digits in variables temp0, temp1, and
temp2, respectively.
@ -21,7 +41,7 @@ The following functions are defined:
with 1 space if b is between 10 and 99, or two spaces
if b is less than 10.
Note: Calls putdec() and putspc(). Leaves the value
Note: Calls putdec and putspc. Leaves the value
of b in varible temp3.
putder(b); Writes the decimal representation of byte b to the
@ -29,22 +49,22 @@ The following functions are defined:
with 1 space if b is between 10 and 99, or two spaces
if b is less than 10.
Note: Calls putdec() and putspc(). Leaves the value
Note: Calls putdec and putspc. Leaves the value
of b in varible temp3.
putdst(); Prints the destination string set by the setdst() or
setstr() functions.
putdst(); Prints the destination string set by the setdst or
setstr functions.
This can be used to print the results of any function
call that stores it's result in the destination string,
such as strcat(), strcpy(), and strcut() in string,
such as strcat, strcpy, and strcut in string,
Note: calls putc() and is called by printf() when
Note: calls putc and is called by printf when
processing a %S formatting tag.
putspc(b); Writes a space character to the screen.
Note: Used by the putdel() and putder() functions.
Note: Used by the putdel and putder functions.
r = printf(b, &s): Writes the value of byte b to screen, formatting
the output according the contents of string s.
@ -61,16 +81,16 @@ The following functions are defined:
%R - output b as a right justified decimal number
%% - output a single % character
Unlike the printf() function in standard C, only
Unlike the printf function in standard C, only
one value argument may be passed and that value is
used for each formatting tag in the format string.
One additional formatting tag is supported:
%S - output the destination string
The destination string is set using the setdst() or
strdst() functions (from the "string" library) before
calling printf(). Multiple occurances of the %S tag
The destination string is set using the setdst or
strdst functions (from the "string" library) before
calling printf. Multiple occurances of the %S tag
will cause the destination string to be repeated.
When tag types are mixed, the %S tag will output the
@ -82,8 +102,8 @@ The following functions are defined:
lower case with either a 0 or 1 in the high bit.
Unrecognized formatting tags are interpreted as %C.
Note: Calls putdec(), putdel(), putder(), prbyte(), or
putdst() depending on which formatting tags are used.
Note: Calls putdec, putdel, putder, prbyte, or
putdst depending on which formatting tags are used.
The value of b is left in variable temp3.
Note: This library expects the following functions to be defined:

2
include/stddef.a02
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@ -4,7 +4,7 @@
;External Variables
;TEMP0, TEMP1, TEMP2
;Standard Constant Definitions
;Constant Definitions
TRUE EQU $FF ;Returned for Success or Failure
FALSE EQU $00 ;by some Library Routines

12
include/stdiox.a02
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@ -1,5 +1,17 @@
; C02 library stdiox.h02 assembly language subroutines
ANYKEP: DC "Press any key to continue...",0
ANYKEY: JSR NEWLIN ;Start at Beginning of Next Line
LDY #>ANYKEP ;Load Prompt High Byte
LDX #<ANYKEP ;Load Prompt Low Byte
;Drop into GETCPR
;Display Prompt and Wait for Character
GETCPR: JSR PUTLN ;Print Prompt
JSR NEWLIN ;Generate Blank Line
JMP GETC ;Wait for and Return Keypress
;Print Byte as Left Justified Decimal Number
;void putdel(b)
;Args: A = number to print

19
include/stdiox.h02
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@ -2,6 +2,21 @@
* stdiox - Extended I/O Routines for C02 *
******************************************/
/* Display "Press any key to continue" *
* prompt and wait fo keypress *
* Returns: ASCII value of key pressed */
void anykey();
/* Display prompt and wait for keypress *
* Args: &s - string to display *
* Returns: ASCII value of key pressed */
void getcpr();
/* 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 */
void putdec();
@ -20,7 +35,3 @@ void putdst();
/* Print a Space Character */
void putspc();
/* Print Formatted Byte to Screen *
* Args: b - byte to format *
* &s - formatting string */
void printf();

1
include/stdlib.a02
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@ -199,7 +199,6 @@ UPBCD: LDA TEMP1 ;Get Low Byte
STA TEMP1 ;Save in Tens
RTS
;ConVert number to packed Binary Coded Decimal
;Args: A - Number to Convert
;Destroys: TEMP0

10
py65/testiox.c02
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@ -3,6 +3,7 @@
***********************************************/
#include <py65.h02>
#include <stddef.h02>
#include <stdlib.h02>
#include <stdio.h02>
#include <stdiox.h02>
@ -12,6 +13,8 @@ char s = "string";
main:
getcpr("Press any key to begin...");
i = 0;
putln("prtdec()");
@ -55,10 +58,3 @@ newlin();
done:
goto exit;
void anykey() {
newlin();
putln("Press any key...");
c = getc();
newlin();
}