* *``````````````````````````````* * ZMLOAD :: RESTORE 0-PAGE MEM * *- -* * RESTORES PREVIOUSLY SAVED * * ZERO PAGE VALUES FROM * * HIGHER MEMORY LOCATION. * * CLOBBERS: * * * * FLAGS: ????---- REG: AXYM * *- -* * CYCLES: ??? * * SIZE: * *- -* * USAGE: * * * * LDA #>$6A00 * * PHA * * LDA #<$6A00 * * PHA * * JSR ZMLOAD * *- -* * ENTRY * * * * TOP OF STACK * * * * LOW BYTE OF RETURN ADDRESS * * HI BYTE OF RETURN ADDRESS * * LOW BYTE OF SOURCE * * HIGH BYTE OF SOURCE * *- -* * EXIT * * * * TOP OF STACK * * * * LOW BYTE OF RETURN ADDRESS * * HI BYTE OF RETURN ADDRESS * * * *,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,* * ZMLOAD * ** SAVE RETURN ADDRESS * PLA STA :RETADR PLA STA :RETADR+1 * ** GET PARAMETERS * PLA STA ADDR1 PLA STA ADDR1+1 * ** COPY ZERO PAGE TO SPECIFIED ** NON-ZERO LOCATION (ONLY THE ** FREE ONES..) * LDY #2 ; START 2 AHEAD LDA (ADDR1),Y ; AND PUT ADDR1 STA $08 ; AREA LAST INY LDA (ADDR1),Y STA $09 INY LDA (ADDR1),Y STA $19 INY LDA (ADDR1),Y STA $1E INY LDA (ADDR1),Y STA $E3 INY LDA (ADDR1),Y STA $EB INY LDA (ADDR1),Y STA $EC INY LDA (ADDR1),Y STA $ED INY LDA (ADDR1),Y STA $EE INY LDA (ADDR1),Y STA $EF INY LDA (ADDR1),Y STA $FA INY LDA (ADDR1),Y STA $FB INY LDA (ADDR1),Y STA $FC INY LDA (ADDR1),Y STA $FD INY LDA (ADDR1),Y STA $FE INY LDA (ADDR1),Y STA $FF * ** NOW GET ZERO PAGE VALUES ** FOR SPACE OCCUPIED BY ADDR; RETURN IN X,Y * LDY #0 LDA (ADDR1),Y TAX LDA (ADDR1+1),Y TAY STX ADDR1 STY ADDR1+1 * ** RESTORE RETURN ADDRESS * LDA :RETADR+1 PHA LDA :RETADR PHA * RTS * ** DATA * :RETADR DS 2 *