mirror of
https://github.com/RevCurtisP/C02.git
synced 2024-06-08 06:29:32 +00:00
35 lines
1.3 KiB
Plaintext
35 lines
1.3 KiB
Plaintext
/* VIC 20 with 8k Expansion Header File */
|
|
|
|
//#pragma ascii invert //switch case for PETSCII
|
|
|
|
//Platform Specific Constants
|
|
#define DELKEY $14 //Delete/Backspace Key (DEL)
|
|
#define ESCKEY $03 //Escape/Stop Key (STOP)
|
|
#define RTNKEY $0D //Return/Enter Key (RETURN)
|
|
|
|
//Library Pointer Variables
|
|
char srclo,srchi; //Source String Pointer for Library Functions
|
|
char dstlo,dsthi; //Destination String Pointer for Library Functions
|
|
char blklo,blkhi; //Block Segment Pointer
|
|
char stklo,stkhi; //Stack Pointer
|
|
|
|
//Library Variables
|
|
char blkslo, blkshi; //Block Start Address
|
|
char blkelo, blkehi; //Block End Address
|
|
char blklen; //Block Segment Length
|
|
char stkslo, stkshi; //Stack Start Address
|
|
char stkelo, stkehi; //Stsck End Address
|
|
char random, rdseed; //Pseudo-Random Number Generation
|
|
char temp0, temp1, temp2, temp3; //Temporary Storage
|
|
|
|
//System Subroutines
|
|
char plkey(); //Poll Console for character
|
|
char rdkey(); //Wait for character from Console
|
|
char getkey(); //Read ASCII character from Console
|
|
void newlin(); //Advance cursor to beginning of next line
|
|
void delchr(); //Delete previous character
|
|
void prchr(); //Print ASCII character to Console
|
|
void prbyte(); //Print Accumulator as Hexadadecimal number
|
|
void prhex(); //Print Low Nybble of Accumulator as Hex Digit
|
|
|