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@ -238,49 +238,49 @@ KLOP1: |
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;_____________________________________________________________________________ |
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; |
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HXLOAD: |
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CALL NEWLINE ; SHOW READY |
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CALL NEWLINE ; SHOW READY |
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HXLOADLINE: |
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CALL CIN ; GET THE FIRST CHARACTER, EXPECTING A ':' |
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CP ':' ; IS IT COLON ':'? WAIT FOR START OF NEXT LINE OF INTEL HEX FILE |
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JR NZ,HXLOADLINE ; IF NOT, GO BACK TO WAIT |
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LD E,0 ; RESET THE CHECKSUM BYTE <E> |
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CALL HEXINS ; FIRST TWO CHARACTERS IS THE RECORD LENGTH FIELD <D> |
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LD D,A ; LOAD RECORD LENGTH COUNT INTO D |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, MEMORY LOAD ADDRESS <H> |
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LD H,A ; PUT VALUE IN H REGISTER |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, MEMORY LOAD ADDRESS <L> |
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LD L,A ; PUT VALUE IN L REGISTER |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, RECORD FIELD TYPE |
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DEC A ; RECORD FIELD TYPE 01 IS END OF FILE |
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JR Z,HXLOADEXIT ; MUST BE THE END OF THAT FILE |
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INC A ; RECORD FIELD TYPE 00 IS DATA |
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JR NZ,HXLOADTYPERR ; RECORD TYPE IS INCORRECT, ERROR OUT |
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CP ':' ; IS IT COLON ':'? WAIT FOR START OF NEXT LINE OF INTEL HEX FILE |
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JR NZ,HXLOADLINE ; IF NOT, GO BACK TO WAIT |
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LD E,0 ; RESET THE CHECKSUM BYTE <E> |
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CALL HEXINS ; FIRST TWO CHARACTERS IS THE RECORD LENGTH FIELD <D> |
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LD D,A ; LOAD RECORD LENGTH COUNT INTO D |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, MEMORY LOAD ADDRESS <H> |
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LD H,A ; PUT VALUE IN H REGISTER |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, MEMORY LOAD ADDRESS <L> |
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LD L,A ; PUT VALUE IN L REGISTER |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, RECORD FIELD TYPE |
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DEC A ; RECORD FIELD TYPE 01 IS END OF FILE |
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JR Z,HXLOADEXIT ; MUST BE THE END OF THAT FILE |
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INC A ; RECORD FIELD TYPE 00 IS DATA |
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JR NZ,HXLOADTYPERR ; RECORD TYPE IS INCORRECT, ERROR OUT |
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HXLOADDATA: |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, ASSEMBLE INTO BYTE |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, ASSEMBLE INTO BYTE |
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LD (HL),A ; MOVE CONVERTED BYTE IN A TO MEMORY LOCATION |
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INC HL ; INCREMENT POINTER TO NEXT MEMORY LOCATION |
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DEC D ; DECREMENT LINE CHARACTER COUNTER |
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JR NZ,HXLOADDATA ; AND KEEP LOADING INTO MEMORY UNTIL LINE IS COMPLETE |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, ASSEMBLE INTO CHECKSUM BYTE |
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LD A,E ; RECALL THE CHECKSUM BYTE |
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OR A ; IT SHOULD BE ZERO |
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JR Z,HXLOADLINE ; ZERO, SO WE HAVE NO ERROR, GO GET ANOTHER LINE |
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INC HL ; INCREMENT POINTER TO NEXT MEMORY LOCATION |
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DEC D ; DECREMENT LINE CHARACTER COUNTER |
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JR NZ,HXLOADDATA ; AND KEEP LOADING INTO MEMORY UNTIL LINE IS COMPLETE |
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CALL HEXINS ; GET NEXT TWO CHARACTERS, ASSEMBLE INTO CHECKSUM BYTE |
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LD A,E ; RECALL THE CHECKSUM BYTE |
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OR A ; IT SHOULD BE ZERO |
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JR Z,HXLOADLINE ; ZERO, SO WE HAVE NO ERROR, GO GET ANOTHER LINE |
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HXLOADCHKERR: |
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LD HL,TXT_CKSUMERR ; GET "CHECKSUM ERROR" MESSAGE |
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CALL PRTSTR ; PRINT MESSAGE FROM (HL) AND TERMINATE THE LOAD |
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JP SERIALCMDLOOP ; RETURN TO PROMPT |
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LD HL,TXT_CKSUMERR ; GET "CHECKSUM ERROR" MESSAGE |
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CALL PRTSTR ; PRINT MESSAGE FROM (HL) AND TERMINATE THE LOAD |
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JP SERIALCMDLOOP ; RETURN TO PROMPT |
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HXLOADTYPERR: |
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LD HL,TXT_RECORDERR ; GET "RECORD TYPE ERROR" MESSAGE |
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CALL PRTSTR ; PRINT MESSAGE FROM (HL) AND TERMINATE THE LOAD |
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JP SERIALCMDLOOP ; RETURN TO PROMPT |
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HXLOADEXIT: |
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CALL HEXINS ; GET LAST TWO CHARACTERS, ASSEMBLE INTO CHECKSUM BYTE |
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LD A,E ; RECALL THE CHECKSUM BYTE |
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CALL HEXINS ; GET LAST TWO CHARACTERS, ASSEMBLE INTO CHECKSUM BYTE |
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LD A,E ; RECALL THE CHECKSUM BYTE |
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OR A ; IT SHOULD BE ZERO |
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JR NZ,HXLOADCHKERR ; CHECKUM IS INCORRECT, ERROR OUT |
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LD HL,TXT_LOADED ; GET "LOADED" MESSAGE |
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CALL PRTSTR ; PRINT MESSAGE FROM (HL) |
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JP SERIALCMDLOOP ; RETURN TO PROMPT |
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JR NZ,HXLOADCHKERR ; CHECKUM IS INCORRECT, ERROR OUT |
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LD HL,TXT_LOADED ; GET "LOADED" MESSAGE |
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CALL PRTSTR ; PRINT MESSAGE FROM (HL) |
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JP SERIALCMDLOOP ; RETURN TO PROMPT |
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; |
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;__POUT_______________________________________________________________________ |
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; |
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@ -649,17 +649,17 @@ HEXBYTE3: |
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;_____________________________________________________________________________ |
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; |
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HEXWORD: |
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LD DE,0 ; INIT WORKING VALUE |
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LD DE,0 ; INIT WORKING VALUE |
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HEXWORD1: |
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CALL ISHEX ; DO WE HAVE A HEX CHAR? |
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CALL ISHEX ; DO WE HAVE A HEX CHAR? |
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JR NZ,HEXWORD3 ; IF NOT, WE ARE DONE |
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LD B,4 ; SHIFT WORKING VALUE (DE := DE * 16) |
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HEXWORD2: |
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SLA E ; SHIFT LSB ONE BIT |
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RL D ; SHIFT MSB ONE BIT |
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RET C ; RETURN W/ CF SET INDICATING OVERFLOW ERROR |
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DJNZ HEXWORD2 ; LOOP FOR 4 BITS |
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CALL NIBL ; CONVERT HEX CHAR TO BINARY VALUE IN A & INC HL |
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DJNZ HEXWORD2 ; LOOP FOR 4 BITS |
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CALL NIBL ; CONVERT HEX CHAR TO BINARY VALUE IN A & INC HL |
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OR E ; COMBINE WITH LSB |
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LD E,A ; AND PUT BACK IN WROKING VALUE |
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JR HEXWORD1 ; DO ANOTHER CHARACTER |
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@ -673,7 +673,7 @@ HEXWORD3: |
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;_____________________________________________________________________________ |
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; |
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NIBL: |
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LD A,(HL) ; GET K B. DATA |
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LD A,(HL) ; GET K B. DATA |
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INC HL ; INC KB POINTER |
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CP 40H ; TEST FOR ALPHA |
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JR NC,ALPH |
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@ -681,7 +681,7 @@ NIBL: |
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RET |
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ALPH: |
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AND 0FH ; GET THE BITS |
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ADD A,09H ; MAKE IT HEX A-F |
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ADD A,09H ; MAKE IT HEX A-F |
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RET |
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; |
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;__HEXINS_____________________________________________________________________ |
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@ -690,13 +690,13 @@ ALPH: |
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;_____________________________________________________________________________ |
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; |
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HEXINS: |
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CALL NIBLS ; DO A NIBBLE |
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RLCA ; MOVE FIRST BYTE UPPER NIBBLE |
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RLCA ; |
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RLCA ; |
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RLCA ; |
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CALL NIBLS ; DO A NIBBLE |
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RLCA ; MOVE FIRST BYTE UPPER NIBBLE |
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RLCA ; |
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RLCA ; |
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RLCA ; |
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LD B,A ; SAVE ROTATED NIBBLE |
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CALL NIBLS ; DO NEXT NIBBLE |
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CALL NIBLS ; DO NEXT NIBBLE |
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OR B ; COMBINE NIBBLES IN ACC TO BYTE |
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LD B,A ; SAVE BYTE |
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ADD A,E ; ADD TO CHECKSUM |
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@ -704,7 +704,7 @@ HEXINS: |
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LD A,B ; RECOVER BYTE |
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RET ; DONE |
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NIBLS: |
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CALL CIN ; GET K B. DATA |
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CALL CIN ; GET K B. DATA |
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SUB '0' |
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CP 10 ; TEST FOR ALPHA |
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RET C ; IF A<10 JUST RETURN |
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