mirror of https://github.com/A2osX/A2osX.git
104 lines
2.3 KiB
Plaintext
104 lines
2.3 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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TABLE1 .EQ $BE00-48
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TABLE2 .EQ $BE00-32
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TABLE3 .EQ $BE00-16
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*--------------------------------
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DIR.AC
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JSR GNNB GET NEXT NON-BLANK FOR DELIMITER
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BCS .8 ...ERROR
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STA DLIM IN CASE IT IS A DELIMITER
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EOR #'0'
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BEQ .9 ...INITIAL STRING
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CMP #4
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BCC .10
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*---GET NEXT CHAR OF STRING------
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.2 JSR GNC GET NEXT CHAR TO ENCODE
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BCS .8 ...ERROR
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CMP DLIM
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BEQ .7 ...END OF STRING
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*---SEARCH TABLE 1---------------
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LDY #15
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.3 CMP TABLE1,Y
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BEQ .6 ...FOUND IT
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DEY
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BNE .3
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*---SEARCH TABLE 2---------------
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JSR OUTPUT.NYBBLE.Y
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LDY #15
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.4 CMP TABLE2,Y
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BEQ .6 ...FOUND IT
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DEY
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BNE .4
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*---SEARCH TABLE 3---------------
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JSR OUTPUT.NYBBLE.Y
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LDY #15
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.5 CMP TABLE3,Y
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BEQ .6 ...FOUND IT
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DEY
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BNE .5
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*---NOT IN ANY TABLE-------------
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JSR OUTPUT.NYBBLE.Y
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PHA
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LSR
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LSR
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LSR
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LSR
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TAY
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JSR OUTPUT.NYBBLE.Y
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PLA
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AND #$0F
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TAY
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*---OUTPUT TABLE INDEX-----------
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.6 JSR OUTPUT.NYBBLE.Y
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*---NEXT CHAR--------------------
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JMP .2
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*---END OF STRING----------------
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.9 STA NYBBLE.FLAG
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.7 RTS
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*---ERROR------------------------
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.8 JMP ERBA
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*---READ NEW CODING TABLES-------
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.10 SBC #0 CHANGE TO 0,1,2
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ASL *16
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ASL
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ASL
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ASL
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TAX
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JSR GNC
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BCS .7 ...NO STRING
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STA DLIM
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.11 JSR GNC ...ALLOW LOWER CASE
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BCS .8 ...ERROR
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CMP DLIM
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BEQ .7 ...END OF STRING
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INX
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CPX #48
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BCS .8 ...GONE TOO FAR
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STA TABLE1,X
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BCC .11 ...ALWAYS
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*--------------------------------
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OUTPUT.NYBBLE.Y
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PHA SAVE A-REG
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TYA
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LSR NYBBLE.FLAG
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BCS .1 ...IT WAS = $01
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ASL ...IT WAS = $00
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ASL
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ASL
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ASL
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STA BYTE
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INC NYBBLE.FLAG
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PLA
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RTS
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.1 ORA BYTE
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JSR EMIT
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PLA
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RTS
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*--------------------------------------
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MAN
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SAVE usr/src/scmasm.31/scmasm.s.acdir
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LOAD usr/src/scmasm.31/scmasm.s
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ASM
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