┬EFORE ACTUALLY PROCURING THE CHIP, IT IS IMPORTANT THAT YOU MODIFY ╘╚┼ ╙┼╥╓┴╬╘ TO SUIT YOUR OWN PREFERENCES. ╨LEASE REFER TO APPENDIX ┬.
╧NCE YOUR SERVANT HAS BEEN MODIFIED, IT'S TIME TO MAKE A CHIP. ╘╚┼ ╙┼╥╓┴╬╘ IS DESIGNED TO BE PROGRAMMED INTO AN ┼╨╥╧═ (┼RASABLE ╨ROGRAMABLE ╥EAD ╧NLY ═EMORY) CHIP. ╘O DO THAT, YOU'LL NEED AN ┼╨╥╧═áPROGRAMMER. ┴NY 64/128 PROGRAMMER WILL DO. ┘OU MAY EVEN ATTEMPT TRANSFERRING ╘╚┼ ╙┼╥╓┴╬╘ CODE TO ═╙-─╧╙ USING ┬IG ┬LUE ╥EADER AND USE A ╨├ EQUIPPED WITH AN ┼╨╥╧═ BURNER CARD.
╘HE CHIP ITSELF MUST BE A 27256. ╨ROGRAM IT USING THE ┼╨╥╧═ PROGRAMMER AS DESCRIBED IN YOUR ┼╨╥╧═ PROGRAMMER MANUAL. ╘HE 27256 COME IN TWO VERSIONS; ╧NE FOR 12.5 ╓OLTS PROGRAMMING VOLTAGE, AND ONE FOR 21 ╓OLTS. ╧FTEN, THE PROGRAMMING VOLTAGE IS PRINTED ON THE CHIP ITSELF. ╔F IN DOUBT, TRY PROGRAMMING USING 12.5 ╓OLTS FIRST. ╘HEN, IF IT WON'T WORK, TRY 21 ╓OLTS. ╔F YOU DON'T HAVE AN ┼╨╥╧═ PROGRAMMER YOURSELF, SOME MEMBER OF A LOCAL USER GROUP MIGHT HAVE ONE. ╔F YOU WISH TO BUY AN ┼╨╥╧═ PROGRAMMER, PLEASE FIND THE ADDRESS OF ╩ASON ╥ANHEIM IN APPENDIX ╞.
╔F YOU CAN'T FIND AN ┼╨╥╧═ PROGRAMMER AND/OR ╘╚┼ ╙┼╥╓┴╬╘ DISTRIBUTION DISK, JUST SEND A 27256 ┼╨╥╧═ TO THE AUTHOR. ╘HERE WILL BE A TURNAROUND FEE; PLEASE REFER TO THE LICENSE TERMS PRINTED IN THE BEGINNING OF THIS MANUAL. ╘HE ┼╨╥╧═ WILL BE RETURNED WITH ╘╚┼ ╙┼╥╓┴╬╘ PROGRAMMED INTO IT. ╨LEASE READ APPENDIX ┬ ON CUSTOMIZING ╘╚┼ ╙┼╥╓┴╬╘ AND DESCRIBE AS CLOSELY AS YOU CAN HOW YOU WANT YOUR ╙┼╥╓┴╬╘ TO BE CONFIGURED. ╔ WILL READ AND FOLLOW YOUR INSTRUCTIONS! ╘HE BEST SOLUTION HOWEVER, IS TO MAKE A MODIFIED ╘╚┼ ╙┼╥╓┴╬╘ YOURSELF AND SENDING THE FILE ON DISK. ╘HIS WAY, YOU CAN PLAY AROUND WITH THE VARIOUS OPTIONS, FIND OUT FOR YOURSELF HOW YOU WANT ╘╚┼ ╙┼╥╓┴╬╘ TO BE CONFIGURED. ┘OU MAY, AT ANY TIME, RETURN YOUR ╙┼╥╓┴╬╘ ┼╨╥╧═ IF YOU WISH TO ALTER ╘╚┼ ╙┼╥╓┴╬╘S CONFIGURATION. ╘HE SAME TURNAROUND FEE AS ABOVE WILL APPLY.
╔╬╙╘┴╠╠┴╘╔╧╬:
╘╚┼ ╙┼╥╓┴╬╘ CAN BE INSTALLED IN THE INTERNAL ╥╧═ SOCKET IN ANY 128 OR 128─, IN A ╥╧═ CARTRIDGE, OR EVEN INSIDE THE ├OMMODORE 17XX SERIES ╥AM ┼XPANSION ╒NITS. ╔ WILL INCLUDE INSTRUCTIONS FOR EACH OF THE ABOVE.
╧PENING YOUR COMPUTER TEND TO MAKE YOU BOTH NERVOUS AND EAGER AT THE SAME TIME, AND YOU MAY TEND DO BECOME ABSENT MINDED. ╘HEREFORE, READ THE WHOLE INSTALLATION GUIDE AND TROUBLESHOOTING SECTION, ┬┼╞╧╥┼ OPENING YOUR COMPUTER. ╫HAT IT ALL BOILS DOWN TO IS THAT IF YOU FEEL CONFIDENT, YOU ARE MORE LIKELY TO AVOID BLUNDERS.
├╧══╧╬ ╘╧ ┴╠╠ ├128 ═╧─┼╠╙:
╘URN OFF YOUR ENTIRE SYSTEM. ╒NPLUG ALL CABLES (EVEN KEYBOARD CABLE ON 128─), AND TAKE YOUR COMPUTER TO THE KITCHEN. ├OMPUTER CHIPS ARE SENSITIVE TO STATIC CHARGES (BUT NOT AS SENSITIVE AS OFTEN THOUGHT TO BE), AND THE KITCHEN IS A ROOM WHERE STATIC NORMALLY DON'T OCCUR. ╬O CARPETS, AND A FAIRLY HIGH HUMIDITY. ─ON'T WEAR CLOTHES MADE OF SYNTHETIC MATERIALS. ╫EAR WOOL OR COTTON. ┘OU NEED A LARGE CLEAN WORKING SPACE, AT LEAST TWICE AS WIDE AS YOUR COMPUTER. ┘OU'LL PROBABLY BE SURPRISED HOW MUCH SPACE YOUR COMPUTER TAKES UP IN DISASSEMBLED CONDITION. ╘HEN PUT ON YOUR SURGEON'S GLOVES, SCALPEL IN HAND, AND DIVE INTO IT. ╔T IS OF PARAMOUNT IMPORTANCE TO YOUR SUCCESS THAT YOU TAKE YOUR TIME AND USE GOOD COMMON SENSE. ╫HEN UNPLUGGING CONNECTORS, NOTE (USING PENCIL AND PAPER) WHERE THEY BELONG AND THEIR ORIENTATION, JUST TO BE ON THE SAFE SIDE. ═ARKING THE CONNECTORS DOES HAVE THE SIDE EFFECT THAT IT MAY INCREASE YOUR CONFIDENCE OF YO'RE A BIT NERVOUS IN THE OUTSET.
╘OOLS REQUIRED:
┴ MEDIUM SIZED PHILLIPS SCREWDRIVER
┴ PAIR OF FLAT-NOSED PLIERS (FOR THE FLAT 128)
┘OU MAY ALSO CONSIDER:
╨ENCIL AND PAPER
┴ SMALL FLAT SCREWDRIVER OR CHIP PULLING TOOL
┴ PAIR OF TWEEZERS (TO PICK UP LOST SCREWS)
├ONTACT CLEANING SPRAY (OZONE FRIENDLY!)
┴ CHIP PIN STRAIGHTENING TOOL
┴ CHIP INSERTION TOOL
┴N ASHTRAY, EGG CARTON OR SIMILAR TO HOLD THE SCREWS.
╧PENING THE "FLAT MODEL" ├OMMODORE 128:
1) ╘URN THE COMPUTER UP-SIDE DOWN, AND REMOVE THE SIX SCREWS.
╘URN THE COMPUTER BACK THE RIGHT WAY. ╘HERE ARE SOME SMALL PLASTIC HOOKS ON EACH SIDE NEAR THE TOP OF THE KEYBOARD WHICH STILL HOLDS THE TWO HALVES TOGETHER. ╨ULL THE TWO HALVES APART IN THE ╥┼┴╥ ╠┼╞╘ ├╧╥╬┼╥ JUST ENOUGH SO YOU CAN GET YOUR FINGERS IN-BETWEEN. ╘HEN, USING BRUTE FORCE, PULL THE TWO HALVES APART.
╧N THE LEFT, THERE IS A SMALL CONNECTOR WITH THREE WIRES ATTACHED TO IT WHICH LEADS TO THE POWER ╠┼─. ╒NPLUG IT.
3) ╬OW, TURN THE KEYBOARD OVER TOWARDS THE RIGHT. ┘OU WILL NOTICE THAT IT HANGS IN THE KEYBOARD WIRES. ╘HERE'S NO NEED TO UNPLUG THOSE.
3) ╥EMOVE THE SEVEN SCREWS AROUND THE EDGES OF THE OF THE METAL SHIELD. ╘HE SCREW AT THE FRONT RIGHT HAS A GROUNDING STRAP FROM THE KEYBOARD WHICH YOU MUST DETACH TEMPORARILY. ╙OME COMPUTERS ALSO HAS A SCREW ROUGHLY IN THE MIDDLE OF THE SHIELDING (NEAR THE ╥╞ CONNECTOR). ╘HE SHIELD IS ALSO HELD DOWN BY A NUMBER OF METAL TAGS AROUND THE EDGES. ┘OU'LL HAVE TO BEND THEM ASIDE. ┘OU MAY EVEN BREAK THEM OFF AS THEY SERVE NO USEFUL PURPOSE. ┘OU MAY ALSO NEED TO BEND ASIDE THE TAGS SURROUNDING THE PLASTIC STALK IN THE MIDDLE.
4) ╔N SOME 128S THE SHIELDING IS EVEN SOLDERED IN PLACE AT ONE POINT. ╔F THAT IS THE CASE, BEND THE SHIELDING UP AND ASIDE ENOUGH SO THAT YOU CAN ACCESS THE REAR LEFT PORTION OF THE CIRCUIT BOARD.
5) ╬OW, PLEASE REFER TO THE CHIP INSERTION SECTION BELOW.
╧PENING THE 128─ PORTABLE (╨LASTIC CASE WITH CARRYING HANDLE):
1) ╘URN THE COMPUTER UP SIDE DOWN AND REMOVE THE FOUR SCREWS.
2) ╟RASP THE COMPUTER FIRMLY WITH BOTH HANDS (SO THE COMPUTER WON'T FALL APART UNCONTROLLABLY) AND TURN IT OVER.
3) ╥EMOVE THE COVER BY LIFTING IT SLIGHTLY AT THE BACK AND THEN PULLING IT BACK SLIGHTLY.
4) ╘HE LID IS ATTACHED TO THE POWER LEAD TO THE MAIN CIRCUIT BOARD, SO YOU'LL HAVE TO TURN THE LID OVER AND LAY IT DOWN TO THE LEFT OF THE COMPUTER.
5) ╨ULL OUT THE DISK DRIVE LEVER
6) ╥EMOVE THE THREE SCREWS JUST BEHIND THE FRONT COVER AT THE TOP.
7) ╠IFT THE FRONT PANEL UP AND AWAY FROM THE BASE.
8) ╥EMOVE THE DISK DRIVE CIRCUIT BOARD, REMOVING THE FIVE CONNECTORS AND THE TWO FIXING SCREWS.
9) ╘HERE IS A WIRE FROM THE CIRCUIT BOARD TO THE MAIN SHIELDING WHICH WILL HAVE TO BE REMOVED.
10) ╙LIDE THE CIRCUIT BOARD TO THE LEFT AND LIFT IT AWAY.
╥EMOVE THE POWER SUPPLY. ╒NDO THE FOUR SCREWS AND REMOVE THE CONNECTOR IN THE FAR RIGHT CORNER. ╥EMOVE THE WIRE ATTACHED TO THE DISK DRIVE UNIT. ╠IFT THE POWER SUPPLY AWAY.
11) ╬OW, READ THE INSTALLATION INSTRUCTIONS BELOW.
╧PENING THE "NEW" 128─ (═ETAL CASE WITH NO CARRYING HANDLE):
1) ╠OOK AT THE REAR AND FIND THE THREE LARGEST ╨HILLIPS SCREWS THAT ARE FASTENED TO THE TOP LIP ON THE CASE ON THE BACK. ╔F YOU ARE LOST, DO STEP 2 FIRST, AND THEN RETURN TO THIS STEP.
2) ╘URN THE COMPUTER UPSIDE DOWN. ╘HERE ARE TWO SCREWS TO UNDO ON THE UNDERSIDE. ╧NE VERY CLOSE TO THE CASSETTE PORT AND ONE ON THE OTHER SIDE (NEAR THE POWER LIGHT).
3) ╟RASP THE COMPUTER FIRMLY WITH BOTH HANDS SO THAT IT WON'T FALL APART UNCONTROLLABLY, THEN TURN IT THE RIGHT WAY UP.
4) ╬OW THE HARDEST PART. ╟RAB THE TOP OF THE CASE AND SLIDE IT BACK FROM THE REST OF THE 128─ TILL IT STOPS (JUST SHORT OF AN INCH MOVEMENT OR ABOUT 2 CM). ╨ULLING FROM THE TOP LIP WHERE THE THREE FIRST THREE SCREWS WERE SEEMS TO WORK BEST. ╬OW LIFT THE COVER STRAIGHT UP AND OFF OF THE 128─. ╬OTICE HOW THE COVER SLIDES OFF OF THE FOUR TABS WHICH FITS INTO THE FOUR SLITS ON THE TOP COVER (TWO ON EACH SIDE).
5) ╬OW, READ THE INSTALLATION INSTRUCTIONS BELOW.
╔╬╙╘┴╠╠╔╬╟ ╘╚┼ ├╚╔╨:
╔F YOU HAVE A FLAT 128 OR 128─ PORTABLE, YOU WILL SOON NOTICE THE EMPTY SOCKET ON THE REAR LEFT. ╔N THE "NEW" 128─ HOWEVER, THE SOCKET IS LOCATED 2.5 INCHES FROM THE ╞╥╧╬╘ AND 2.5 INCHES FROM THE LEFT. ╔N EITHER CASE, THE SOCKET IS MARKED ╒36. ╘HAT IS THE INTERNAL ╥╧═ SOCKET.
┬EFORE INSERTION, YOU WILL PROBABLY HAVE TO STRAIGHTEN THE PINS OF THE CHIP. ╧N A FRESH NEW CHIP, THE TWO ROWS OF PINS ARE NORMALLY POINTING SLIGHTLY APART. ┘OU WILL NEED TO STRAIGHTEN THEM SO THEY ARE COMPLETELY VERTICAL. ┘OU MAY HOLD THE CHIP IN BOTH ENDS, AND LAY ONE ROW OF PINS FLAT DOWN ON THE TABLE. ╘HEN ROLL THE CHIP SLIGHTLY SO THAT THE PINS BECOME STRAIGHT. ╥EPEAT THE PROCESS WITH THE OTHER ROW OF PINS. ─╧ ╬╧╘ BEND THE PINS SO THAT THEY POINT INWARDS. ┴LTERNATIVELY, YOU MAY USE A PIN STRAIGHTENING TOOL IF YOU HAVE IT.
╬OW, INSERT THE CHIP. ╘HE CHIP HAS A NOTCH AT ONE END WHICH MUST POINT TOWARDS THE FRONT OF THE COMPUTER. ┴LL THE OTHER CHIPS IN THE VICINITY IS ORIENTED THE SAME WAY. ├HECK THAT EACH AND EVERY PIN GOES INTO A HOLE IN THE SOCKET. ╨USH IT DOWN.
┴ COMMON PROBLEM WHEN THE CHIP IS FIRST INSERTED IS THAT ONE OR MORE OF THE PINS DON'T MAKE PROPER CONTACT WITH THE SOCKET. ╘HIS IS DUE TO OXIDIZATION OF THE HITHERTO UNUSED SOCKET CONTACTS. ═ALFUNCTION WILL RESULT. ╘O REMEDY THE PROBLEM, LIFT THE ┼╨╥╧═ SLIGHTLY IN BOTH ENDS AND THEN PUSH IT DOWN AGAIN. ╥EPEAT THIS A COUPLE OF TIMES.
├╧═╨╒╘┼╥ ╥┼-┴╙╙┼═┬╠┘ & ╘┼╙╘╔╬╟:
╞OLLOW THE DISASSEMBLY INSTRUCTIONS FOR YOUR COMPUTER IN REVERSED ORDER. ├ONNECT THE POWER CORD AND MONITOR. ─ON'T CONNECT OTHER PERIPHERALS YET. ╘URN ON YOUR MONITOR AND LET IT WARM UP FOR ABOUT THIRTY SECONDS. ╘HEN TURN ON YOUR COMPUTER. ╘╚┼ ╙┼╥╓┴╬╘ MAIN MENU SHOULD APPEAR ON THE SCREEN. ╔F ╘╚┼ ╙┼╥╓┴╬╘ DO APPEAR AS EXPECTED, POWER DOWN AND CONNECT YOUR PERIPHERALS. ┼NJOY!
╚ELP! ╔T DOESN'T WORK:
─ON'T DESPAIR (YET). ╘AKE A DEEP BREATH AND CALMLY FOLLOW THE TEST PROCEDURE BELOW THAT FITS YOUR PROBLEM IN A STEP BY STEP FASHION.
╬O SCREEN DISPLAY:
1)á├HECK THE POWER LIGHTS ON YOUR COMPUTER AND MONITOR. ─O THEY INDEED SHINE?
2) ├HECK THAT THE COMPUTER MONITOR ARE USING THE SAME SCREEN MODE AND IS PROPERLY HOOKED UP TO EACH OTHER.
3) ╘RY REMOVING ╘╚┼ ╙┼╥╓┴╬╘ CHIP.
4) ╔F THE SYSTEM IS STILL DEAD, THE COMPUTER ITSELF MUST HAVE BECOME FAULTY. ╚ARD LUCK! ╙HAKE THE COMPUTER AND LISTEN FOR A RATTLING SOUND. ╘HERE MIGHT BE A METAL OBJECT (MAYBE A SCREW) WHICH MAKES A SHORT CIRCUIT SOMEWHERE. ┴LSO, YOU MAY CHECK THE FEW WIRES ON THE CIRCUIT BOARD SO SEE IF THEY HAVE COME LOOSE AT THE SOLDER POINTS. ┴LSO CHECK THAT EVERYTHING IS RE-ASSEMBLED PROPERLY. ╘HIS GOES ESPECIALLY FOR THE 128─ PORTABLE.
╘HE ├128 POWER-ON MESSAGE APPEARS, THE SYSTEM THEN HANGS UP:
1) ╨RESS THE RESET BUTTON. ╔F THAT DOESN'T HELP, TURN OFF THE COMPUTER, WAIT FOR APPROXIMATELY 15 SECONDS, THEN TURN BACK ON.
2) ╘URN OFF YOUR SYSTEM AGAIN AND DISCONNECT THE SERIAL CABLE.
╔F THE COMPUTER WORKS NOW, TRY TO LOCATE THE PERIPHERAL WHICH CAUSES THE INTERFERENCE. ╘HIS SHOULD NOT HAPPEN WITH ANY ├OMMODORE BRAND PERIPHERALS; ╨RINTER INTERFACES ARE PROBABLY THE MOST LIKELY TO CAUSE PROBLEMS ALTHOUGH EVERY EFFORT HAS BEEN PUT FORTH TO AVOID IT. ╔ SHOULD NOTE THAT IF YOU ARE USING A 1581 DISK DRIVE, IT WILL HOLD BACK ╘╚┼ ╙┼╥╓┴╬╘ FOR A MOMENT. ╨LEASE WRITE THE AUTHOR AND EXPLAIN YOUR PROBLEM IF YOU FIND THAT A CERTAIN PERIPHERAL IS CAUSING PROBLEMS.
3) ╔F NONE OF THESE SUGGESTIONS WILL CURE THE PROBLEM, READ THE SECTION BELOW.
╘HE COMPUTER POWERS UP JUST LIKE IT DID BEFORE THE ╥╧═ INSTALLATION, ╘╚┼ ╙┼╥╓┴╬╘ MENU APPEARS, THE SYSTEM HANGS UP OR GOES HEYWIRE, ╘╚┼ ╙┼╥╓┴╬╘ WORKS, BUT HANGS UP OR GOES HEYWIRE AFTER A WHILE:
╘HERE IS SOME PROBLEM WITH THE CHIP. ╔T MAY BE FAULTY, WHICH IS NOT VERY LIKELY, OR ONE OF MORE OF THE PINS ARE NOT MAKING PROPER CONTACT WITH THE SOCKET.
1) ╔NSPECT THE CHIP WHERE IT SITS. ╔S IT INDEED ORIENTED WITH THE NOTCH TOWARDS THE FRONT OF THE COMPUTER? ╔F NOT, TURN IT AROUND AND TEST. ╙URPRISINGLY, ╥╧═ CHIPS OFTEN SURVIVE BEING INSERTED THE WRONG WAY AROUND.
2) ╥EMOVE THE CHIP, CHECK THAT NO PINS ARE BENT OUT OF SHAPE WHICH MAY ACCOUNT FOR THE MALFUNCTIONING. ├AREFULLY STRAIGHTEN ANY BENT PIN(S), THEN RE-INSERT THE CHIP.
3) ╔F ALL PINS WERE ╧╦, THEN CLEAN THE SOCKET CONTACTS USING A CONTACT CLEANING SPRAY OR FLUID. ╥E-INSERT THE CHIP AND TEST.
4) ╘RY BENDING THE TWO ROWS OF PINS ON THE CHIP SLIGHTLY CLOSER TOGETHER.
5) ╔F NOTHING WORKS, SEND THE CHIP TO THE AUTHOR FOR TESTING. ╨LEASE DESCRIBE THE NATURE AND SYMPTOMS OF THE PROBLEM AND EVERYTHING YOU HAVE DONE TO FIX IT. ╔F POSSIBLE, PLEASE STATE YOUR ╙┼╥╓┴╬╘S VERSION NUMBER.
═╧╒╬╘╔╬╟ ╘╚┼ ╙┼╥╓┴╬╘ ╔╬╘╧ ┴ ├┴╥╘╥╔─╟┼:
╘╚┼ ╙┼╥╓┴╬╘ WILL WORK WITHOUT MODIFICATION IN A CARTRIDGE. ╚OWEVER, THIS SOLUTION IS NOT RECOMMENDED UNLESS YOU HAVE A VERY GOOD REASON TO CHOOSE IT. ═OUNTING ╘╚┼ ╙┼╥╓┴╬╘ IN A CARTRIDGE WILL TIE UP YOUR EXPANSION PORT, AND AS SOON AS YOU REMOVE THE CARTRIDGE YOUR COMPUTER BECOMES PLAIN STOCK AGAIN. ╘╚┼ ╙┼╥╓┴╬╘ IN A CARTRIDGE WILL NOT WORK SWITCHED ON AT THE SAME TIME IN CONJUNCTION WITH OTHER CARTRIDGES (EXCEPT 17XX ╥┼╒'S) USING AN EXPANSION BOARD. ╔F YOU CAN, MOUNT ╘╚┼ ╙┼╥╓┴╬╘ IN THE INTERNAL ╥╧═ SOCKET!
╘HE CARTRIDGE YOU WISH TO USE MUST BE ABLE TO HOLD A 32╦ ╥╧═ CHIP. ╙OME CARTRIDGES CAN BE RECONFIGURED USING JUMPER WIRES OR SWITCHES TO HOLD DIFFERENT KINDS OF CHIPS. ╘HE CARTRIDGE MANUFACTURER SHOULD SUPPLY THE CARTRIDGE WITH INSTRUCTIONS ON HOW TO SET UP THE CARTRIDGE. ╨╠┼┴╙┼ ╬╧╘┼: ╘HERE IS A SIGNIFICANT DIFFERENCE BETWEEN 64 AND 128 MODE CARTRIDGES. ═AKE SURE THAT YOU GET A 128 TYPE. ╙OME UNITS HAS JUMPERS OR SWITCHES TO CONFIGURE THE CARTRIDGE FOR 64 OR 128. ╒SING A 64 MODE CARTRIDGE WILL MAKE THE COMPUTER ALWAYS POWER UP IN 64 MODE. ╚OWEVER, A 64 ONLY CARTRIDGE CAN BE MODIFIED FOR USE ON A 128. ╚ERE'S HOW: ╚OLD THE CARTRIDGE THE RIGHT WAY UP WITH THE CONNECTOR TOWARDS YOU. ╧N THE TOP SIDE, LOCATE CONTACTS NUMBER 8 AND 9 COUNTING FROM THE LEFT (REMEMBER TO COUNT MISSING CONTACTS). ├UT THE LEADS CONNECTED TO THOSE TWO CONTACTS, AND CUT THE TWO CONTACTS APART IF THEY ARE JOINED TOGETHER. ╘HE CARTRIDGE SHOULD NOW WORK IN 128 MODE. ╞OR TROUBLESHOOTING, THE SAME WILL APPLY AS FOR THE INTERNAL ╥╧═ INSTALLATION. ╚OWEVER, THE CARTRIDGE WON'T WORK IF IT'S IMPROPERLY CONFIGURED.
╘HIS MODIFICATION IS ONLY FOR THE CONFIDENT SOLDERING IRON SLINGERS AMONG YOU. ╘HIS EXPLANATION WILL THEREFORE BE VERY BRIEF. ╨LEASE NOTE THAT THE ─═┴ CHIP INSIDE THE ╥┼╒ IS EXTREMELY SENSITIVE TO STATIC CHARGES. ╫HEN OPENING THE ╥┼╒, YOU WILL SEE THE OUTLINE OF A CHIP PRINTED ON AN OTHERWISE EMPTY PART OF THE CIRCUIT BOARD. ╩UST OUTSIDE THE OUTLINE THERE ARE TWO ROWS OF HOLES. ═OUNT A ╠╧╫ ╨╥╧╞╔╠┼ 28 PIN ╔├ SOCKET INTO THE HOLES AND SOLDER IT IN PLACE. ═OUNT ╘╚┼ ╙┼╥╓┴╬╘ CHIP INTO THE SOCKET WITH THE NOTCH THE SAME WAY AS SHOWN ON THE OUTLINE PRINTED ON THE CIRCUIT BOARD. ┘OU'LL ALSO NEED TO ALTER A JUMPER ON THE ╥┼╒'S ╨├┬. ╔T IS MARKED ╩2 (IT ACTUALLY LOOKS LIKE ╔2). ╘HE JUMPER LOOKS LIKE THREE TINY METAL SQUARES. ╬ORMALLY THE MIDDLE ONE AND THE ONE FURTHEST AWAY FROM THE EDGE CONNECTOR IS INTERCONNECTED BY A TINY STRIP OF METAL. ┘OU MUST CUT THE EXISTING CONNECTION AND CONNECT THE MIDDLE SQUARE TO THE ONE CLOSEST TO THE EDGE CONNECTOR USING A DROP OF SOLDER. ╔ SUSPECT THAT OLDER 17XX UNITS HAS A DIFFERENT INTERNAL DESIGN. ╔N THAT CASE, THE ORIENTATION OF THE JUMPER(S) MIGHT BE DIFFERENT THAN DESCRIBED ABOVE. ╥E-ASSEMBLE THE ╥┼╒ AND TEST. ╨╠┼┴╙┼ ╬╧╘┼: ╔F YOU MOUNT ╘╚┼ ╙┼╥╓┴╬╘ INTO THE ╥┼╒ YOU WILL NO LONGER BE ABLE TO USE YOUR ╥┼╒ AND OTHER CARTRIDGES SWITCHED ON AT THE SAME TIME USING AN EXPANSION BOARD.
╔═╨╧╥╘┴╬╘ ╬╧╘┼ ABOUT CARTRIDGE & ╥┼╒ INSTALLATION: ─UE TO THAT ╘╚┼ ╙┼╥╓┴╬╘ CHIP (WHEN MOUNTED EXTERNALLY) AND THE ╤┬┬ CARTRIDGE USE THE SAME MEMORY SPACE, THE ╤┬┬ FEATURES WON'T WORK IN THIS CONFIGURATION. ┴NY ATTEMPT TO USE THE ╤┬┬ AND ╘╚┼ ╙┼╥╓┴╬╘ SWITCHED ON AT THE SAME TIME USING A ARTRIDGE EXPANDER BOARD WILL PROBABLY MAKE ╘╚┼ ╙┼╥╓┴╬╘ MALFUNCTION AS WELL.
╒╙╔╬╟ ╔╬╘┼╥╬┴╠ ╞╒╬├╘╔╧╬ ╥┴═:
╘HIS IS AN INTERESTING OPTION. ╔T INVOLVES MOUNTING A ╥┴═ CHIP INTO THE ├128 INTERNAL ╥╧═ SOCKET. ╙OME EXTRA CIRCUITY IS NEEDED TO MAKE THE ╥┴═ WORK PROPERLY, AND A LITHIUM BATTERY IS NEEDED TO RETAIN THE ╥┴═ CONTENTS WHEN THE COMPUTER IS TURNED OFF. ╔T'S A GOOD IDEA TO INCLUDE A WRITE DISABLE SWITCH IN THE MODIFICATION TO AVOID CORRUPTION OF ╘╚┼ ╙┼╥╓┴╬╘ DUE TO INADVERTENT WRITES TO THE INTERNAL ╥╧═ SOCKET. ├HECK OUT ╘WIN ├ITIES 128 ISSUE 29 FOR FULL INSTRUCTIONS. ╨LEASE REFER TO APPENDIX ╞ FOR THE ADDRESS. ╨LEASE NOTE HOWEVER, THAT ╘╚┼ ╙┼╥╓┴╬╘ CANNOT SIMPLY BE ╠╧┴─ED INTO THIS ╥┴═. ╘╚┼ ╙┼╥╓┴╬╘ MAKES USE OF THE MEMORY AREA WHERE THE ╔/╧ BLOCK RESIDE, AND THE 128 HAS NO STANDARD BANK CONFIGURATION WHICH CAN ACCESS THIS PORTION OF THE EXTERNAL OR INTERNAL ╥╧═ (OR IN THIS CASE, ╥┴═). ╫E NEED A LITTLE ═╠ TO CIRCUMVENT THAT. ╥UN ╘╚┼ ╙┼╥╓┴╬╘ AND SET YOUR PREFERENCES. ╘HERE'S NO NEED TO SAVE IT TO DISK. ╘YPE IN THE FOLLOWING PROGRAM USING THE 128'S BUILT-IN ═╠ MONITOR:
1300 78 SEI
1301 A9 00 LDA #$00
1303 85 FB STA $FB
1305 A9 80 LDA #$80
1307 85 FC STA $FC
1309 A0 00 LDY #$00
130B A2 3F LDX #$3F
130D 8E 00 FF STX $FF00
1310 B1 FB LDA ($FB),Y
1312 A2 17 LDX #$17
1314 8E 00 FF STX $FF00
1317 91 FB STA ($FB),Y
1319 C8 INY
131A D0 EF BNE $130B
131C E6 FC INC $FC
131E D0 EB BNE $130B
1320 58 CLI
1321 60 RTS
┼XECUTE IT USING THE COMMAND J 01300 TO LOAD ╘╚┼ ╙┼╥╓┴╬╘ INTO THE INTERNAL ╥┴═. ╥ESET THE COMPUTER, AND ╘╚┼ ╙┼╥╓┴╬╘ SHOULD APPEAR ON THE SCREEN.
╔T MAY WELL BE POSSIBLE TO MOUNT FUNCTION ╥┴═ INTO A CARTRIDGE (OR EVEN INSIDE A ╥┼╒), BUT ╔ AM NOT AWARE OF ANY PUBLISHED MATERIAL ABOUT SUCH A PROJECT. ╒NFORTUNATELY, THE ╤┬┬ CAN'T BE USED FOR THIS PURPOSE, AS NO ╤┬┬ HAS ENOUGH CONTINUOUS ╥┴═ TO HOLD ╘╚┼ ╙┼╥╓┴╬╘. ╘HE ╤┬┬ IS SEEN AS 16╦ "CHUNKS", WHILE ╘╚┼ ╙┼╥╓┴╬╘ NEED TO LIVE IN A "SEAMLESS" 32╦ AREA.
