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38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
/* Apple 1 Header File */
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//Platform Specific Constants
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#define DELKEY $5F //Delete/Backspace Key
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#define ESCKEY $1B //Escape/Stop Key
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#define RTNKEY $0D //Return/Enter Key
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#define SYSBFL 128 //System Buffer Length
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/* Standard Library Variables */
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zeropage int srcptr, dstptr, bfrptr, blkptr;
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char stklo,skthi; //System Pointer
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int blkbgn, blkend; //Block Start and End Address
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char blklen; //Block Segment Length
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char stkslo, stkshi; //Stack Start Address
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char stkelo, stkehi; //Stack End Address
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char random, rdseed; //Pseudo-Random Number Generator
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char temp0, temp1, temp2, temp3; //Temporary Variables
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char sysbfr[], sysbfp; //System String Buffer and Position
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//Monitor Subroutines
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void echo(); //Print Character in Accumulator
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void prbyte(); //Print Accumulator as Hexadadecimal number
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void prhex(); //Print Low Nybble of Accumulator as Hex Digit
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//System Subroutines
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void delchr(); //Delete previous character
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char getkey(); //Read ASCII character from Console
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void newlin(); //Advance cursor to beginning of next line
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char polkey(); //Poll Console for character
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char putchr(); //Print ASCII character to Console
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char getchr(); //Wait for character from Console
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//System Labels
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start: //Start of Code
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exit: //Return to Operating System
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