A2osX/SCMASM.30/SCMASM.S.ACDIR.txt

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NEW
AUTO 3,1
*--------------------------------------
TABLE1 .EQ $BE00-48
TABLE2 .EQ $BE00-32
TABLE3 .EQ $BE00-16
*--------------------------------
DIR.AC
JSR GNNB GET NEXT NON-BLANK FOR DELIMITER
BCS .8 ...ERROR
STA DLIM IN CASE IT IS A DELIMITER
EOR #'0'
BEQ .9 ...INITIAL STRING
CMP #4
BCC .10
*---GET NEXT CHAR OF STRING------
.2 JSR GNC GET NEXT CHAR TO ENCODE
BCS .8 ...ERROR
CMP DLIM
BEQ .7 ...END OF STRING
*---SEARCH TABLE 1---------------
LDY #15
.3 CMP TABLE1,Y
BEQ .6 ...FOUND IT
DEY
BNE .3
*---SEARCH TABLE 2---------------
JSR OUTPUT.NYBBLE.Y
LDY #15
.4 CMP TABLE2,Y
BEQ .6 ...FOUND IT
DEY
BNE .4
*---SEARCH TABLE 3---------------
JSR OUTPUT.NYBBLE.Y
LDY #15
.5 CMP TABLE3,Y
BEQ .6 ...FOUND IT
DEY
BNE .5
*---NOT IN ANY TABLE-------------
JSR OUTPUT.NYBBLE.Y
PHA
LSR
LSR
LSR
LSR
TAY
JSR OUTPUT.NYBBLE.Y
PLA
AND #$0F
TAY
*---OUTPUT TABLE INDEX-----------
.6 JSR OUTPUT.NYBBLE.Y
*---NEXT CHAR--------------------
JMP .2
*---END OF STRING----------------
.9 STA NYBBLE.FLAG
.7 RTS
*---ERROR------------------------
.8 JMP ERBA
*---READ NEW CODING TABLES-------
.10 SBC #0 CHANGE TO 0,1,2
ASL *16
ASL
ASL
ASL
TAX
JSR GNC
BCS .7 ...NO STRING
STA DLIM
.11 JSR GNC ...ALLOW LOWER CASE
BCS .8 ...ERROR
CMP DLIM
BEQ .7 ...END OF STRING
INX
CPX #48
BCS .8 ...GONE TOO FAR
STA TABLE1,X
BCC .11 ...ALWAYS
*--------------------------------
OUTPUT.NYBBLE.Y
PHA SAVE A-REG
TYA
LSR NYBBLE.FLAG
BCS .1 ...IT WAS = $01
ASL ...IT WAS = $00
ASL
ASL
ASL
STA BYTE
INC NYBBLE.FLAG
PLA
RTS
.1 ORA BYTE
JSR EMIT
PLA
RTS
*--------------------------------------
MAN
SAVE usr/src/scmasm.30/scmasm.s.acdir
LOAD usr/src/scmasm.30/scmasm.s
ASM