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40 lines
1.3 KiB
Plaintext
40 lines
1.3 KiB
Plaintext
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/* Apple ][ Header File */
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//Platform Specific Constants
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#define DELKEY $08 //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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/* Standard Library Variables */
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char srclo,srchi; //Source String Pointer for Library Functions
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char dstlo,dsthi; //Destination String Pointer for Library Functions
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char blklo,blkhi; //Block Segment Pointer
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char stklo,stkhi; //System Pointer
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char blkslo, blkshi; //Block Start Address
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char blkelo, blkehi; //Block End Address
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char blklen; //Block Segment Length
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char temp0, temp1, temp2, temp3; //Temporary Variables
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//System Variables
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char invflg; //Video Invert Mask
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//Keyboard I/O
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char kbd; //Keyboard Data Register
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char abd; //Keyboard Strobe Register
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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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char plkey(); //Poll Console for character
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char rdkey(); //Wait for character from Console
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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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void prchr(); //Print ASCII character to Console
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void setdst(); //Set Destination Pointer
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void setsrc(); //Set Source Pointer
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