SIDSTEREO4.0SCHM
FILE INFORMATION
FILENAME(S): SIDSTEREO4.0SCHM
FILE TYPE(S): SEQ
FILE SIZE: 6.5K
FIRST SEEN: 2025-10-19 22:49:51
APPEARS ON: 1 disk(s)
FILE HASH
6fc375e4ded6d994d38d4ffad760476d01b020fc85c0a81af16c3d2205787751
FOUND ON DISKS (1 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| MICRO MANIAC | SIDSTEREO4.0SCHM | SEQ | Radd Maxx | 19 | 0 | DOWNLOAD FILE |
FILE CONTENT & ANALYSIS
00000000: C1 44 44 49 4E 47 20 41 4E 20 45 58 54 52 41 20 |.DDING AN EXTRA | 00000010: D3 C9 C4 20 36 35 38 31 20 43 48 49 50 0D 0D D4 |... 6581 CHIP...| 00000020: 48 49 53 20 49 53 20 4E 4F 54 20 41 20 50 52 4F |HIS IS NOT A PRO| 00000030: 4A 45 43 54 20 54 4F 20 42 45 20 54 41 43 4B 4C |JECT TO BE TACKL| 00000040: 45 44 20 0D 42 59 20 54 48 45 20 53 51 45 41 4D |ED .BY THE SQEAM| 00000050: 49 53 48 20 4F 52 20 50 45 4F 50 4C 45 20 57 48 |ISH OR PEOPLE WH| 00000060: 4F 20 41 52 45 20 0D 44 45 41 54 48 4C 59 20 41 |O ARE .DEATHLY A| 00000070: 46 52 41 49 44 20 4F 46 20 4F 50 45 4E 49 4E 47 |FRAID OF OPENING| 00000080: 20 54 48 45 49 52 20 0D 43 4F 4D 50 55 54 45 52 | THEIR .COMPUTER| 00000090: 20 4A 55 53 54 20 54 4F 20 54 41 4B 45 20 41 20 | JUST TO TAKE A | 000000A0: 50 45 45 4B 20 49 4E 53 49 44 45 2E 0D 0D CE 4F |PEEK INSIDE....O| 000000B0: 57 20 4C 45 54 27 53 20 47 45 54 20 52 49 44 20 |W LET'S GET RID | 000000C0: 4F 46 20 54 48 45 20 4E 41 53 54 59 20 53 54 55 |OF THE NASTY STU| 000000D0: 46 46 20 0D 46 49 52 53 54 2E 20 20 CE 4F 20 4C |FF .FIRST. .O L| 000000E0: 49 41 42 49 4C 49 54 59 20 49 53 20 41 53 53 55 |IABILITY IS ASSU| 000000F0: 4D 45 44 20 57 49 54 48 20 0D 52 45 53 50 45 43 |MED WITH .RESPEC| 00000100: 54 20 54 4F 20 54 48 45 20 55 53 45 20 4F 46 20 |T TO THE USE OF | 00000110: 54 48 45 20 46 4F 4C 4C 4F 57 49 4E 47 20 0D 49 |THE FOLLOWING .I| 00000120: 4E 46 4F 52 4D 41 54 49 4F 4E 2E 20 20 C9 4E 20 |NFORMATION. .N | 00000130: 4F 54 48 45 52 20 57 4F 52 44 53 20 49 46 20 59 |OTHER WORDS IF Y| 00000140: 4F 55 20 0D 53 43 52 45 57 2D 55 50 20 54 52 59 |OU .SCREW-UP TRY| 00000150: 49 4E 47 20 54 4F 20 49 4E 53 54 41 4C 4C 20 54 |ING TO INSTALL T| 00000160: 48 49 53 20 0D 4D 4F 44 49 46 49 43 41 54 49 4F |HIS .MODIFICATIO| 00000170: 4E 2C 20 54 48 45 4E 20 49 54 27 53 20 59 4F 55 |N, THEN IT'S YOU| 00000180: 52 20 0D 52 45 53 50 4F 4E 53 41 42 49 4C 49 54 |R .RESPONSABILIT| 00000190: 59 2E 0D 0D 20 20 D9 CF D5 20 C4 CF 20 D4 C8 C9 |Y... ... .. ...| 000001A0: D3 20 C1 D4 20 D9 CF D5 D2 20 CF D7 CE 20 D2 C9 |. .. .... ... ..| 000001B0: D3 CB 21 21 21 21 0D 0D C9 46 20 59 4F 55 20 44 |..!!!!...F YOU D| 000001C0: 4F 20 4E 4F 54 20 46 45 45 4C 20 55 50 20 54 4F |O NOT FEEL UP TO| 000001D0: 20 49 54 20 D0 CC C5 C1 D3 C5 20 0D 54 41 4B 45 | IT ...... .TAKE| 000001E0: 20 49 54 20 54 4F 20 41 20 C3 4F 4D 4D 4F 44 4F | IT TO A .OMMODO| 000001F0: 52 45 20 52 45 50 41 49 52 20 43 45 4E 54 45 52 |RE REPAIR CENTER| 00000200: 20 0D 4F 52 20 41 20 52 45 50 41 49 52 20 53 45 | .OR A REPAIR SE| 00000210: 52 56 49 43 45 20 54 48 41 54 20 43 41 4E 20 57 |RVICE THAT CAN W| 00000220: 4F 52 4B 20 4F 4E 20 0D 43 4F 4D 50 55 54 45 52 |ORK ON .COMPUTER| 00000230: 53 20 41 4E 44 20 4C 45 54 20 54 48 45 4D 20 44 |S AND LET THEM D| 00000240: 4F 20 54 48 45 20 0D 49 4E 53 54 41 4C 4C 41 54 |O THE .INSTALLAT| 00000250: 49 4F 4E 2E 0D 0D D9 4F 55 20 43 41 4E 20 4D 41 |ION....OU CAN MA| 00000260: 4B 45 20 59 4F 55 52 20 4F 57 4E 20 50 49 47 47 |KE YOUR OWN PIGG| 00000270: 59 20 42 41 43 4B 20 0D 42 4F 41 52 44 20 4F 52 |Y BACK .BOARD OR| 00000280: 20 59 4F 55 20 43 41 4E 20 44 4F 20 57 48 41 54 | YOU CAN DO WHAT| 00000290: 20 C9 20 41 4D 20 47 4F 49 4E 47 20 0D 54 4F 20 | . AM GOING .TO | 000002A0: 44 45 53 43 52 49 42 45 20 28 53 49 4E 43 45 20 |DESCRIBE (SINCE | 000002B0: 49 54 20 49 53 20 41 20 4C 49 54 54 4C 45 20 0D |IT IS A LITTLE .| 000002C0: 48 41 52 44 20 54 4F 20 50 55 54 20 41 20 53 43 |HARD TO PUT A SC| 000002D0: 48 45 4D 41 54 49 43 20 49 4E 20 41 20 54 45 58 |HEMATIC IN A TEX| 000002E0: 54 20 0D 46 49 4C 45 2C 20 57 45 4C 4C 20 4E 4F |T .FILE, WELL NO| 000002F0: 54 20 48 41 52 44 20 4A 55 53 54 20 43 55 4D 42 |T HARD JUST CUMB| 00000300: 45 52 53 4F 4D 45 29 2E 0D 0D D9 4F 55 20 53 48 |ERSOME)....OU SH| 00000310: 4F 55 4C 44 20 47 52 4F 55 4E 44 20 59 4F 55 52 |OULD GROUND YOUR| 00000320: 53 45 4C 46 20 57 49 54 48 20 41 20 0D 53 54 41 |SELF WITH A .STA| 00000330: 54 49 43 20 47 55 41 52 44 20 57 52 49 53 54 42 |TIC GUARD WRISTB| 00000340: 41 4E 44 20 28 53 55 43 48 20 41 53 20 57 48 41 |AND (SUCH AS WHA| 00000350: 54 20 0D D2 41 44 49 4F 20 D3 48 41 43 4B 20 53 |T ..ADIO .HACK S| 00000360: 45 4C 4C 53 29 2E 20 20 C5 56 45 4E 20 54 48 4F |ELLS). .VEN THO| 00000370: 55 47 48 20 54 48 45 20 0D 43 48 49 50 20 49 53 |UGH THE .CHIP IS| 00000380: 20 51 55 49 54 45 20 44 55 52 41 42 4C 45 2C 20 | QUITE DURABLE, | 00000390: 4A 55 53 54 20 54 48 45 20 52 49 47 48 54 20 0D |JUST THE RIGHT .| 000003A0: 53 54 41 54 49 43 20 44 49 53 43 48 41 52 47 45 |STATIC DISCHARGE| 000003B0: 20 43 41 4E 20 52 55 49 4E 20 41 4C 4C 20 4F 52 | CAN RUIN ALL OR| 000003C0: 20 50 41 52 54 20 0D 4F 46 20 54 48 45 20 D3 C9 | PART .OF THE ..| 000003D0: C4 20 43 48 49 50 2E 0D 0D C6 4F 52 20 54 48 4F |. CHIP....OR THO| 000003E0: 53 45 20 4F 46 20 59 4F 55 20 54 48 41 54 20 41 |SE OF YOU THAT A| 000003F0: 52 45 20 4E 4F 54 20 0D 46 41 4D 49 4C 49 45 52 |RE NOT .FAMILIER| 00000400: 20 57 49 54 48 20 54 48 45 20 57 41 59 20 50 49 | WITH THE WAY PI| 00000410: 4E 53 20 41 52 45 20 0D 4E 55 4D 42 45 52 45 44 |NS ARE .NUMBERED| 00000420: 20 4F 4E 20 41 4E 20 C9 C3 20 43 48 49 50 20 48 | ON AN .. CHIP H| 00000430: 45 52 45 20 49 53 20 41 20 0D 53 48 4F 52 54 20 |ERE IS A .SHORT | 00000440: 45 58 50 4C 41 4E 41 54 49 4F 4E 2E 20 20 CF 4E |EXPLANATION. .N| 00000450: 20 4F 4E 45 20 45 4E 44 20 4F 46 20 54 48 45 20 | ONE END OF THE | 00000460: 0D C9 C3 20 59 4F 55 20 53 48 4F 55 4C 44 20 46 |... YOU SHOULD F| 00000470: 49 4E 44 20 41 20 4C 49 54 54 4C 45 20 4E 4F 54 |IND A LITTLE NOT| 00000480: 43 48 2C 20 0D 4C 4F 4F 4B 49 4E 47 20 41 54 20 |CH, .LOOKING AT | 00000490: 54 48 45 20 43 48 49 50 20 57 49 54 48 20 54 48 |THE CHIP WITH TH| 000004A0: 45 20 4E 4F 54 43 48 20 41 54 20 0D 54 48 45 20 |E NOTCH AT .THE | 000004B0: 54 4F 50 20 54 48 45 20 4E 55 4D 42 45 52 49 4E |TOP THE NUMBERIN| 000004C0: 47 20 47 4F 45 53 20 54 48 49 53 20 57 41 59 2E |G GOES THIS WAY.| 000004D0: 20 20 0D D4 48 45 20 55 50 50 45 52 20 4C 45 46 | ..HE UPPER LEF| 000004E0: 54 20 43 4F 52 4E 45 52 20 4F 46 20 54 48 45 20 |T CORNER OF THE | 000004F0: 43 48 49 50 20 49 53 20 0D 50 49 4E 20 31 20 41 |CHIP IS .PIN 1 A| 00000500: 4E 44 20 54 48 45 59 20 41 52 45 20 4E 55 4D 42 |ND THEY ARE NUMB| 00000510: 45 52 45 44 20 0D 43 4F 4E 53 45 43 55 54 49 56 |ERED .CONSECUTIV| 00000520: 45 4C 59 2C 20 43 4F 55 4E 54 45 52 2D 43 4C 4F |ELY, COUNTER-CLO| 00000530: 43 4B 57 49 53 45 20 0D 41 52 4F 55 4E 44 20 54 |CKWISE .AROUND T| 00000540: 48 45 20 43 48 49 50 2E 20 20 D3 4F 4D 45 20 43 |HE CHIP. .OME C| 00000550: 48 49 50 53 20 44 4F 20 4E 4F 54 20 0D 48 41 56 |HIPS DO NOT .HAV| 00000560: 45 20 41 20 4E 4F 54 43 48 20 49 4E 20 4F 4E 45 |E A NOTCH IN ONE| 00000570: 20 45 4E 44 2C 20 42 55 54 20 49 4E 53 54 45 41 | END, BUT INSTEA| 00000580: 44 20 0D 44 4F 54 20 49 53 20 50 4C 41 43 45 44 |D .DOT IS PLACED| 00000590: 20 49 4E 20 4F 4E 45 20 4F 46 20 54 48 45 20 43 | IN ONE OF THE C| 000005A0: 48 49 50 20 0D 43 4F 52 4E 45 52 53 20 54 4F 20 |HIP .CORNERS TO | 000005B0: 44 45 53 49 47 4E 41 54 45 20 54 48 41 54 20 50 |DESIGNATE THAT P| 000005C0: 49 4E 20 31 20 0D 53 54 41 52 54 53 20 49 4E 20 |IN 1 .STARTS IN | 000005D0: 54 48 41 54 20 4C 4F 43 41 54 49 4F 4E 2E 0D 0D |THAT LOCATION...| 000005E0: 20 20 20 20 20 20 20 20 20 20 20 20 4E 4F 54 43 | NOTC| 000005F0: 48 0D 20 20 20 20 20 20 20 20 20 20 2D 2D 2D 2D |H. ----| 00000600: 2C 2C 2D 2D 2D 2D 0D 20 20 20 20 20 20 20 20 31 |,,----. 1| 00000610: 2D 21 2E 20 20 20 20 20 20 20 21 2D 38 0D 20 20 |-!. !-8. | 00000620: 20 20 20 20 20 20 32 2D 21 20 44 4F 54 20 20 20 | 2-! DOT | 00000630: 20 21 2D 37 0D 20 20 20 20 20 20 20 20 33 2D 21 | !-7. 3-!| 00000640: 20 20 20 20 20 20 20 20 21 2D 36 0D 20 20 20 20 | !-6. | 00000650: 20 20 20 20 34 2D 21 20 20 20 20 20 20 20 20 21 | 4-! !| 00000660: 2D 35 0D 20 20 20 20 20 20 20 20 20 20 2D 2D 2D |-5. ---| 00000670: 2D 2D 2D 2D 2D 2D 2D 0D 0D 0D D9 4F 55 20 4E 45 |-------....OU NE| 00000680: 45 44 20 54 48 45 20 46 4F 4C 4C 4F 57 49 4E 47 |ED THE FOLLOWING| 00000690: 20 50 41 52 54 53 2E 0D 0D 31 20 2D 20 36 35 38 | PARTS...1 - 658| 000006A0: 31 20 D3 C9 C4 20 43 48 49 50 0D 31 20 2D 20 32 |1 ... CHIP.1 - 2| 000006B0: CE 32 32 32 32 20 54 52 41 4E 53 49 53 54 4F 52 |.2222 TRANSISTOR| 000006C0: 0D 32 20 2D 20 34 37 30 50 46 20 43 41 50 41 43 |.2 - 470PF CAPAC| 000006D0: 49 54 4F 52 53 0D 32 20 2D 20 31 4B 20 4F 48 4D |ITORS.2 - 1K OHM| 000006E0: 20 31 2F 34 20 57 41 54 54 20 52 45 53 49 53 54 | 1/4 WATT RESIST| 000006F0: 4F 52 53 0D 31 20 2D 20 2E 30 30 31 20 50 46 20 |ORS.1 - .001 PF | 00000700: 43 41 50 41 43 49 54 4F 52 0D 31 20 2D 20 31 30 |CAPACITOR.1 - 10| 00000710: 4B 20 4F 48 4D 20 31 2F 34 20 57 41 54 54 20 52 |K OHM 1/4 WATT R| 00000720: 45 53 49 53 54 4F 52 0D 31 20 2D 20 31 30 20 55 |ESISTOR.1 - 10 U| 00000730: 46 20 45 4C 45 43 54 52 4F 4C 49 54 49 43 20 43 |F ELECTROLITIC C| 00000740: 41 50 41 43 49 54 4F 52 0D 31 20 2D 20 35 20 49 |APACITOR.1 - 5 I| 00000750: 4E 43 48 20 4C 45 4E 47 54 48 20 4F 46 20 57 49 |NCH LENGTH OF WI| 00000760: 52 45 0D 31 20 2D 20 35 20 49 4E 43 48 20 4C 45 |RE.1 - 5 INCH LE| 00000770: 4E 47 54 48 20 4F 46 20 53 48 49 45 4C 44 45 44 |NGTH OF SHIELDED| 00000780: 20 43 41 42 4C 45 0D 31 20 2D 20 53 55 52 46 41 | CABLE.1 - SURFA| 00000790: 43 45 20 4D 4F 55 4E 54 20 46 45 4D 41 4C 45 20 |CE MOUNT FEMALE | 000007A0: D2 C3 C1 20 50 4C 55 47 20 28 54 48 49 53 0D 20 |... PLUG (THIS. | 000007B0: 20 20 20 49 53 20 57 48 41 54 20 59 4F 55 20 4E | IS WHAT YOU N| 000007C0: 4F 52 4D 41 4C 4C 59 20 46 49 4E 44 20 4F 4E 20 |ORMALLY FIND ON | 000007D0: 54 48 45 0D 20 20 20 20 42 41 43 4B 20 4F 46 20 |THE. BACK OF | 000007E0: 59 4F 55 52 20 53 54 45 52 45 4F 2E 0D 0D C6 49 |YOUR STEREO....I| 000007F0: 52 53 54 20 42 45 4E 44 20 4F 55 54 20 50 49 4E |RST BEND OUT PIN| 00000800: 53 20 32 33 2C 20 32 34 20 41 4E 44 20 32 36 20 |S 23, 24 AND 26 | 00000810: 41 4E 44 20 0D 43 55 54 20 54 48 45 4D 20 4F 46 |AND .CUT THEM OF| 00000820: 46 20 4F 46 20 54 48 45 20 36 35 38 31 20 D3 C9 |F OF THE 6581 ..| 00000830: C4 20 43 48 49 50 2E 20 20 0D D4 48 45 53 45 20 |. CHIP. ..HESE | 00000840: 41 52 45 20 46 4F 52 20 54 48 45 20 54 57 4F 20 |ARE FOR THE TWO | 00000850: 41 4E 41 4C 4F 47 20 41 4E 44 20 4F 4E 45 20 0D |ANALOG AND ONE .| 00000860: 41 55 44 49 4F 20 49 4E 50 55 54 20 4C 49 4E 45 |AUDIO INPUT LINE| 00000870: 53 2E 20 20 D4 48 45 59 20 57 49 4C 4C 20 43 41 |S. .HEY WILL CA| 00000880: 55 53 45 20 0D 50 52 4F 42 4C 45 4D 53 20 49 46 |USE .PROBLEMS IF| 00000890: 20 43 4F 4E 4E 45 43 54 45 44 20 41 4E 44 20 53 | CONNECTED AND S| 000008A0: 49 4E 43 45 20 54 48 45 59 20 0D 57 49 4C 4C 20 |INCE THEY .WILL | 000008B0: 4E 4F 54 20 42 45 20 55 53 45 44 20 49 54 20 49 |NOT BE USED IT I| 000008C0: 53 20 42 45 53 54 20 54 4F 20 52 45 4D 4F 56 45 |S BEST TO REMOVE| 000008D0: 20 0D 54 48 45 4D 2E 0D 20 20 0D CE 4F 57 20 42 | .THEM.. ..OW B| 000008E0: 45 4E 44 20 4F 55 54 20 50 49 4E 53 20 31 2C 20 |END OUT PINS 1, | 000008F0: 32 2C 20 33 2C 20 34 2C 20 38 2C 20 32 37 2E 0D |2, 3, 4, 8, 27..| 00000900: 0D D3 4F 4C 44 45 52 20 4F 4E 45 20 4F 46 20 54 |..OLDER ONE OF T| 00000910: 48 45 20 34 37 30 50 46 20 43 41 50 41 43 49 54 |HE 470PF CAPACIT| 00000920: 4F 52 53 20 54 4F 20 0D 50 49 4E 53 20 31 20 41 |ORS TO .PINS 1 A| 00000930: 4E 44 20 32 20 54 48 45 4E 20 53 4F 4C 44 45 52 |ND 2 THEN SOLDER| 00000940: 20 54 48 45 20 4F 54 48 45 52 20 0D 34 37 30 50 | THE OTHER .470P| 00000950: 46 20 43 41 50 41 43 49 54 4F 52 20 54 4F 20 50 |F CAPACITOR TO P| 00000960: 49 4E 53 20 33 20 41 4E 44 20 34 2E 20 20 D4 48 |INS 3 AND 4. .H| 00000970: 45 20 0D 43 41 50 41 43 49 54 4F 52 53 20 43 4F |E .CAPACITORS CO| 00000980: 4E 54 52 4F 4C 20 54 48 45 20 55 50 50 45 52 20 |NTROL THE UPPER | 00000990: 41 4E 44 20 0D 4C 4F 57 45 52 20 46 52 45 51 55 |AND .LOWER FREQU| 000009A0: 45 4E 43 59 20 52 41 4E 47 45 20 4F 46 20 54 48 |ENCY RANGE OF TH| 000009B0: 45 20 D3 C9 C4 20 0D 43 48 49 50 2E 0D 0D D3 4F |E ... .CHIP....O| 000009C0: 4C 44 45 52 20 4F 4E 45 20 45 4E 44 20 4F 46 20 |LDER ONE END OF | 000009D0: 59 4F 55 52 20 57 49 52 45 20 54 4F 20 50 49 4E |YOUR WIRE TO PIN| 000009E0: 20 38 20 0D 4F 46 20 54 48 45 20 D3 C9 C4 20 43 | 8 .OF THE ... C| 000009F0: 48 49 50 2E 20 20 D4 48 49 53 20 49 53 20 46 4F |HIP. .HIS IS FO| 00000A00: 52 20 54 48 45 20 0D 43 48 49 50 20 53 45 4C 45 |R THE .CHIP SELE| 00000A10: 43 54 20 4C 49 4E 45 2E 20 20 D7 45 20 57 49 4C |CT LINE. .E WIL| 00000A20: 4C 20 43 4F 4E 4E 45 43 54 20 0D 54 48 49 53 20 |L CONNECT .THIS | 00000A30: 54 4F 20 54 48 45 20 4D 41 49 4E 20 4D 4F 54 48 |TO THE MAIN MOTH| 00000A40: 45 52 20 42 4F 41 52 44 2C 20 53 4F 20 41 53 20 |ER BOARD, SO AS | 00000A50: 0D 54 4F 20 50 52 4F 56 49 44 45 20 54 48 45 20 |.TO PROVIDE THE | 00000A60: 41 44 44 52 45 53 53 49 4E 47 20 46 4F 52 20 54 |ADDRESSING FOR T| 00000A70: 48 45 20 4E 45 57 20 0D 43 48 49 50 20 28 44 45 |HE NEW .CHIP (DE| 00000A80: 53 43 52 49 42 45 44 20 4C 41 54 45 52 29 2E 0D |SCRIBED LATER)..| 00000A90: 0D CE 4F 57 20 53 4F 4C 44 45 52 20 54 48 45 20 |..OW SOLDER THE | 00000AA0: 52 45 4D 41 49 4E 49 4E 47 20 50 49 4E 53 20 0D |REMAINING PINS .| 00000AB0: 28 45 58 43 4C 55 44 49 4E 47 20 54 48 45 20 4F |(EXCLUDING THE O| 00000AC0: 4E 45 53 20 57 45 20 48 41 56 45 20 42 45 4E 54 |NES WE HAVE BENT| 00000AD0: 20 4F 55 54 20 0D 41 4E 44 20 41 4C 53 4F 20 52 | OUT .AND ALSO R| 00000AE0: 45 4D 4F 56 45 44 20 31 2C 20 32 2C 20 33 2C 20 |EMOVED 1, 2, 3, | 00000AF0: 34 2C 20 38 2C 20 32 33 2C 20 0D 32 34 2C 20 32 |4, 8, 23, .24, 2| 00000B00: 36 20 41 4E 44 20 32 37 29 20 54 4F 20 54 48 45 |6 AND 27) TO THE| 00000B10: 20 53 49 44 20 43 48 49 50 20 0D 43 55 52 52 45 | SID CHIP .CURRE| 00000B20: 4E 54 4C 59 20 49 4E 20 59 4F 55 52 20 43 4F 4D |NTLY IN YOUR COM| 00000B30: 50 55 54 45 52 2E 20 20 D9 4F 55 20 4D 41 59 20 |PUTER. .OU MAY | 00000B40: 0D 48 41 56 45 20 54 4F 20 42 45 4E 44 20 54 48 |.HAVE TO BEND TH| 00000B50: 4F 53 45 20 50 49 4E 53 20 49 4E 57 41 52 44 20 |OSE PINS INWARD | 00000B60: 4A 55 53 54 20 41 20 0D 4C 49 54 54 4C 45 20 46 |JUST A .LITTLE F| 00000B70: 4F 52 20 54 48 45 4D 20 54 4F 20 47 45 54 20 41 |OR THEM TO GET A| 00000B80: 20 47 4F 4F 44 20 47 52 49 50 20 4F 4E 20 0D 54 | GOOD GRIP ON .T| 00000B90: 48 45 20 D3 C9 C4 20 43 48 49 50 2E 20 20 C2 45 |HE ... CHIP. .E| 00000BA0: 20 56 45 52 59 20 43 41 52 45 46 55 4C 20 4E 4F | VERY CAREFUL NO| 00000BB0: 54 20 0D 4C 45 41 56 45 20 54 48 45 20 53 4F 4C |T .LEAVE THE SOL| 00000BC0: 44 45 52 49 4E 47 20 49 52 4F 4E 20 4F 4E 20 54 |DERING IRON ON T| 00000BD0: 48 45 20 43 48 49 50 20 0D D4 CF CF 20 4C 4F 4E |HE CHIP .... LON| 00000BE0: 47 20 41 53 20 59 4F 55 20 43 4F 55 4C 44 20 52 |G AS YOU COULD R| 00000BF0: 55 49 4E 20 C2 CF D4 C8 20 D3 C9 C4 20 0D 43 48 |UIN .... ... .CH| 00000C00: 49 50 53 2E 20 20 CD 41 4B 45 20 53 55 52 45 20 |IPS. .AKE SURE | 00000C10: 54 48 45 52 45 20 49 53 20 47 4F 4F 44 20 53 49 |THERE IS GOOD SI| 00000C20: 5A 45 44 0D 47 41 50 20 42 45 54 57 45 45 4E 20 |ZED.GAP BETWEEN | 00000C30: 42 4F 54 48 20 43 48 49 50 53 20 54 4F 20 50 52 |BOTH CHIPS TO PR| 00000C40: 4F 56 49 44 45 0D 41 49 52 20 43 49 52 43 55 4C |OVIDE.AIR CIRCUL| 00000C50: 41 54 49 4F 4E 2E 20 20 D3 49 4E 43 45 20 54 48 |ATION. .INCE TH| 00000C60: 45 59 20 44 4F 20 47 45 54 0D 56 45 52 59 20 48 |EY DO GET.VERY H| 00000C70: 4F 54 20 41 54 20 54 49 4D 45 53 20 59 4F 55 20 |OT AT TIMES YOU | 00000C80: 4D 41 59 20 48 41 56 45 20 54 4F 0D 48 45 41 54 |MAY HAVE TO.HEAT| 00000C90: 20 53 49 4E 4B 20 C1 D4 20 CC C5 C1 D3 D4 20 54 | SINK .. ..... T| 00000CA0: 48 45 20 42 4F 54 54 4F 4D 20 4F 4E 45 0D 28 42 |HE BOTTOM ONE.(B| 00000CB0: 4F 54 48 20 49 46 20 59 4F 55 20 43 41 4E 29 2E |OTH IF YOU CAN).| 00000CC0: 0D 0D CE 4F 57 20 54 48 41 54 20 59 4F 55 20 48 |...OW THAT YOU H| 00000CD0: 41 56 45 20 54 48 45 20 43 48 49 50 53 20 53 4F |AVE THE CHIPS SO| 00000CE0: 4C 44 45 52 45 44 20 0D 54 4F 47 45 54 48 45 52 |LDERED .TOGETHER| 00000CF0: 20 28 50 4C 41 43 45 20 54 48 45 20 D3 C9 C4 20 | (PLACE THE ... | 00000D00: 43 48 49 50 53 20 42 41 43 4B 20 49 4E 0D 54 48 |CHIPS BACK IN.TH| 00000D10: 45 20 53 4F 43 4B 45 54 20 49 46 20 59 4F 55 20 |E SOCKET IF YOU | 00000D20: 52 45 4D 4F 56 45 44 20 54 48 45 4D 29 2C 20 0D |REMOVED THEM), .| 00000D30: 53 4F 4C 44 45 52 20 54 48 45 20 57 49 52 45 20 |SOLDER THE WIRE | 00000D40: 46 52 4F 4D 20 50 49 4E 20 38 20 28 4F 4E 20 54 |FROM PIN 8 (ON T| 00000D50: 48 45 0D D3 C9 C4 20 43 48 49 50 29 20 54 4F 20 |HE.... CHIP) TO | 00000D60: 50 49 4E 20 39 20 4F 46 20 C9 C3 20 D5 31 35 0D |PIN 9 OF .. .15.| 00000D70: 28 43 48 49 50 20 37 34 CC D3 32 33 39 29 2E 0D |(CHIP 74..239)..| 00000D80: 0D CE 4F 57 20 50 41 52 54 49 41 4C 4C 59 20 52 |..OW PARTIALLY R| 00000D90: 45 41 53 53 45 4D 42 4C 45 20 59 4F 55 52 20 0D |EASSEMBLE YOUR .| 00000DA0: 43 4F 4D 50 55 54 45 52 20 28 42 45 20 43 41 52 |COMPUTER (BE CAR| 00000DB0: 45 46 55 4C 20 54 48 41 54 20 4E 4F 54 48 49 4E |EFUL THAT NOTHIN| 00000DC0: 47 20 0D 53 48 4F 52 54 53 20 4F 55 54 20 54 48 |G .SHORTS OUT TH| 00000DD0: 45 20 50 49 4E 53 20 53 54 49 4C 4C 20 53 54 49 |E PINS STILL STI| 00000DE0: 43 4B 49 4E 47 20 0D 4F 55 54 29 2E 20 20 D4 55 |CKING .OUT). .U| 00000DF0: 52 4E 20 54 48 45 20 43 4F 4D 50 55 54 45 52 20 |RN THE COMPUTER | 00000E00: 4F 4E 20 41 4E 44 20 4C 4F 41 44 20 0D 41 20 50 |ON AND LOAD .A P| 00000E10: 52 4F 47 52 41 4D 20 54 48 41 54 20 57 49 4C 4C |ROGRAM THAT WILL| 00000E20: 20 50 52 4F 44 55 43 45 20 53 4F 55 4E 44 20 4F | PRODUCE SOUND O| 00000E30: 4E 20 0D 41 4C 4C 20 54 48 52 45 45 20 56 4F 49 |N .ALL THREE VOI| 00000E40: 43 45 53 2E 20 20 C9 46 20 59 4F 55 20 47 45 54 |CES. .F YOU GET| 00000E50: 20 53 4F 55 4E 44 20 0D 54 48 45 4E 20 53 4F 20 | SOUND .THEN SO | 00000E60: 46 41 52 20 53 4F 20 47 4F 4F 44 2E 20 20 D4 55 |FAR SO GOOD. .U| 00000E70: 52 4E 20 4F 46 46 20 54 48 45 20 0D 43 4F 4D 50 |RN OFF THE .COMP| 00000E80: 55 54 45 52 20 41 4E 44 20 44 49 53 41 53 53 45 |UTER AND DISASSE| 00000E90: 4D 42 4C 45 20 54 48 45 20 43 41 53 45 2E 0D 0D |MBLE THE CASE...| 00000EA0: C4 52 49 4C 4C 20 41 20 48 4F 4C 45 20 49 4E 20 |.RILL A HOLE IN | 00000EB0: 54 48 45 20 42 41 43 4B 20 45 4E 44 20 4F 46 20 |THE BACK END OF | 00000EC0: 54 48 45 20 0D 43 4F 4D 50 55 54 45 52 20 4A 55 |THE .COMPUTER JU| 00000ED0: 53 54 20 4C 41 52 47 45 20 45 4E 4F 55 47 48 20 |ST LARGE ENOUGH | 00000EE0: 54 4F 20 41 4E 43 48 4F 52 20 0D 54 48 45 20 D2 |TO ANCHOR .THE .| 00000EF0: C3 C1 20 50 4C 55 47 2E 20 20 D4 48 45 4E 20 53 |.. PLUG. .HEN S| 00000F00: 4F 4C 44 45 52 20 54 48 45 20 43 45 4E 54 45 52 |OLDER THE CENTER| 00000F10: 20 0D 57 49 52 45 20 4F 46 20 54 48 45 20 53 48 | .WIRE OF THE SH| 00000F20: 49 45 4C 44 45 44 20 43 41 42 4C 45 20 54 4F 20 |IELDED CABLE TO | 00000F30: 54 48 45 20 0D 43 45 4E 54 45 52 20 50 4F 53 54 |THE .CENTER POST| 00000F40: 20 4F 46 20 54 48 45 20 D2 C3 C1 20 50 4C 55 47 | OF THE ... PLUG| 00000F50: 2E 20 20 C9 4E 53 45 52 54 20 0D 54 48 45 20 57 |. .NSERT .THE W| 00000F60: 49 52 45 20 54 48 52 4F 55 47 48 20 54 48 45 20 |IRE THROUGH THE | 00000F70: 48 4F 4C 45 20 59 4F 55 20 48 41 56 45 20 0D 4A |HOLE YOU HAVE .J| 00000F80: 55 53 54 20 44 52 49 4C 4C 45 44 20 41 4E 44 20 |UST DRILLED AND | 00000F90: 41 4E 43 48 4F 52 20 54 48 45 20 50 4C 55 47 20 |ANCHOR THE PLUG | 00000FA0: 54 4F 20 0D 54 48 45 20 43 41 53 45 2E 20 20 CE |TO .THE CASE. .| 00000FB0: 4F 57 20 53 4F 4C 44 45 52 20 54 48 45 20 47 52 |OW SOLDER THE GR| 00000FC0: 4F 55 4E 44 20 57 49 52 45 20 0D 54 4F 20 54 48 |OUND WIRE .TO TH| 00000FD0: 45 20 47 52 4F 55 4E 44 20 54 41 42 20 4F 4E 20 |E GROUND TAB ON | 00000FE0: 54 48 45 20 D2 C3 C1 20 50 4C 55 47 2E 0D 0D C8 |THE ... PLUG....| 00000FF0: 45 52 45 20 43 4F 4D 45 53 20 54 48 45 20 44 49 |ERE COMES THE DI| 00001000: 46 46 49 43 55 4C 54 20 50 41 52 54 20 54 4F 20 |FFICULT PART TO | 00001010: 0D 45 58 50 4C 41 49 4E 2E 20 20 D4 48 49 53 20 |.EXPLAIN. .HIS | 00001020: 49 53 20 54 48 45 20 43 4F 55 50 4C 49 4E 47 20 |IS THE COUPLING | 00001030: 0D 43 49 52 43 55 49 54 20 46 4F 52 20 54 48 45 |.CIRCUIT FOR THE| 00001040: 20 41 55 44 49 4F 20 4F 55 54 50 55 54 2E 20 20 | AUDIO OUTPUT. | 00001050: C8 45 52 45 20 0D 49 53 20 41 20 52 4F 55 47 48 |.ERE .IS A ROUGH| 00001060: 20 53 43 48 45 4D 41 54 49 43 2E 0D 0D 0D 0D D0 | SCHEMATIC......| 00001070: 49 4E 20 32 37 20 4F 4E 20 20 20 20 20 20 20 20 |IN 27 ON | 00001080: 20 20 20 20 20 31 32 56 4F 4C 54 53 20 44 43 0D | 12VOLTS DC.| 00001090: D3 C9 C4 20 43 48 49 50 20 20 20 52 45 53 49 53 |... CHIP RESIS| 000010A0: 54 4F 52 20 20 20 20 21 0D 2D 2D 2E 20 20 20 20 |TOR !.--. | 000010B0: 20 20 20 20 20 20 31 30 4B 20 4F 48 4D 20 20 20 | 10K OHM | 000010C0: 21 43 4F 4C 4C 45 43 54 4F 52 0D 32 37 21 2D 2D |!COLLECTOR.27!--| 000010D0: 2D 2D 2E 2D 2D 2F 21 2F 21 2F 2D 2D 2E 2D 2D 2D |--.--/!/!/--.---| 000010E0: 2D 2D CF 20 32 4E 32 32 32 32 0D 2D 2D 27 20 20 |--. 2N2222.--' | 000010F0: 20 20 21 20 20 20 20 20 20 20 20 20 21 20 20 20 | ! ! | 00001100: 20 20 21 45 4D 49 54 54 45 52 0D 20 20 20 20 20 | !EMITTER. | 00001110: 20 20 21 20 20 20 20 20 20 20 20 20 21 20 20 20 | ! ! | 00001120: 20 20 21 0D 20 20 20 20 20 20 20 3C 52 45 53 49 | !. <RESI| 00001130: 53 54 4F 52 20 21 20 20 20 20 20 21 0D 20 20 20 |STOR ! !. | 00001140: 20 20 20 20 3E 31 4B 20 20 20 20 20 20 20 21 20 | >1K ! | 00001150: 20 20 20 20 21 20 2B 0D 20 20 20 20 20 20 20 3C | ! +. <| 00001160: 4F 48 4D 20 20 20 20 20 20 21 20 20 20 20 20 3A |OHM ! :| 00001170: 2D 2D 21 5D 2D 2D 2D 54 4F 20 D2 C3 C1 0D 20 20 |--!]---TO .... | 00001180: 20 20 20 20 20 21 20 20 20 20 20 20 20 20 20 21 | ! !| 00001190: 20 20 20 20 20 21 20 20 31 30 20 55 46 0D 20 20 | ! 10 UF. | 000011A0: 20 20 20 20 20 21 20 20 20 20 20 20 20 20 20 21 | ! !| 000011B0: 20 20 20 20 20 21 45 4C 45 43 54 52 4F 4C 20 43 | !ELECTROL C| 000011C0: 41 50 0D 20 20 20 20 20 20 20 21 20 20 20 20 20 |AP. ! | 000011D0: 20 20 20 20 21 20 20 20 20 20 21 0D 47 52 4F 55 | ! !.GROU| 000011E0: 4E 44 2D 2D 2D 20 20 20 20 20 20 20 20 21 20 20 |ND--- ! | 000011F0: 20 20 20 21 0D 20 20 20 20 20 20 20 2D 20 20 20 | !. - | 00001200: 20 20 20 20 20 20 21 20 20 20 20 20 3C 52 45 53 | ! <RES| 00001210: 49 53 54 4F 52 0D 20 20 20 20 20 20 20 20 20 20 |ISTOR. | 00001220: 20 20 20 20 20 20 20 21 20 20 20 20 20 3E 31 4B | ! >1K| 00001230: 0D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00001240: 20 20 21 20 20 20 20 20 3C 4F 48 4D 0D 20 20 20 | ! <OHM. | 00001250: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 21 20 | ! | 00001260: 20 20 20 20 21 0D 20 20 20 20 20 20 20 20 20 20 | !. | 00001270: 20 20 20 20 20 20 20 21 20 20 20 20 20 21 0D 20 | ! !. | 00001280: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001290: 21 20 20 20 20 20 21 0D 20 20 20 20 20 20 20 20 |! !. | 000012A0: 20 20 20 20 20 20 20 20 20 21 20 20 20 20 2D 2D | ! --| 000012B0: 2D 47 52 4F 55 4E 44 0D 20 20 20 20 20 20 20 20 |-GROUND. | 000012C0: 20 20 20 20 20 20 20 20 20 21 20 20 20 20 20 2D | ! -| 000012D0: 0D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 000012E0: 20 20 21 0D 20 20 20 20 20 20 20 20 20 20 20 20 | !. | 000012F0: 20 20 20 20 3D 3D 3D 20 2E 30 30 31 20 50 46 0D | === .001 PF.| 00001300: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00001310: 20 21 20 20 43 41 50 41 43 49 54 4F 52 0D 20 20 | ! CAPACITOR. | 00001320: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 21 | !| 00001330: 0D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00001340: 20 2D 2D 2D 47 52 4F 55 4E 44 0D 20 20 20 20 20 | ---GROUND. | 00001350: 20 20 20 20 20 20 20 20 20 20 20 20 2D 0D 0D 0D | -...| 00001360: D9 4F 55 20 43 41 4E 20 47 45 54 20 54 48 45 20 |.OU CAN GET THE | 00001370: 31 32 20 56 4F 4C 54 53 20 59 4F 55 20 4E 45 45 |12 VOLTS YOU NEE| 00001380: 44 20 46 4F 52 20 0D 54 48 45 20 54 52 41 4E 53 |D FOR .THE TRANS| 00001390: 49 53 54 4F 52 20 46 52 4F 4D 20 4F 4E 45 20 4F |ISTOR FROM ONE O| 000013A0: 46 20 54 48 45 20 46 4F 4C 4C 4F 57 49 4E 47 0D |F THE FOLLOWING.| 000013B0: 45 4C 45 43 54 52 4F 4C 49 54 49 43 20 43 41 50 |ELECTROLITIC CAP| 000013C0: 41 43 49 54 4F 52 53 2E 20 20 D3 54 41 52 54 20 |ACITORS. .TART | 000013D0: 57 49 54 48 20 54 48 45 0D 46 49 52 53 54 20 4F |WITH THE.FIRST O| 000013E0: 4E 45 20 49 4E 20 54 48 45 20 4C 49 53 54 2E 20 |NE IN THE LIST. | 000013F0: 20 D4 48 45 20 46 41 52 54 48 45 52 20 44 4F 57 | .HE FARTHER DOW| 00001400: 4E 0D 54 48 45 20 4C 49 53 54 20 59 4F 55 20 47 |N.THE LIST YOU G| 00001410: 4F 20 54 48 45 20 4D 4F 52 45 20 4E 4F 49 53 45 |O THE MORE NOISE| 00001420: 20 59 4F 55 20 4D 41 59 0D 4E 4F 54 49 43 45 20 | YOU MAY.NOTICE | 00001430: 49 4E 20 54 48 45 20 4F 55 54 50 55 54 2E 20 20 |IN THE OUTPUT. | 00001440: C9 46 20 41 4C 4C 20 45 4C 53 45 20 46 41 49 4C |.F ALL ELSE FAIL| 00001450: 53 0D 59 4F 55 20 43 41 4E 20 47 45 54 20 49 54 |S.YOU CAN GET IT| 00001460: 20 44 49 52 45 43 54 4C 59 20 46 52 4F 4D 20 50 | DIRECTLY FROM P| 00001470: 49 4E 20 32 20 4F 46 0D 56 4F 4C 54 41 47 45 20 |IN 2 OF.VOLTAGE | 00001480: 52 45 47 55 4C 41 54 4F 52 20 D6 D2 31 20 28 C9 |REGULATOR ..1 (.| 00001490: 20 53 54 52 4F 4E 47 4C 59 20 44 4F 20 4E 4F 54 | STRONGLY DO NOT| 000014A0: 20 0D 52 45 43 4F 4D 4D 45 4E 44 20 54 48 49 53 | .RECOMMEND THIS| 000014B0: 21 21 21 21 29 2E 0D 0D C3 4F 4E 4E 45 43 54 20 |!!!!)....ONNECT | 000014C0: 54 4F 20 54 48 45 20 D0 CC D5 D3 20 53 49 44 45 |TO THE .... SIDE| 000014D0: 20 4F 46 20 54 48 45 20 45 4C 45 43 54 52 4F 4C | OF THE ELECTROL| 000014E0: 49 54 49 43 0D 43 41 50 41 43 49 54 4F 52 53 2E |ITIC.CAPACITORS.| 000014F0: 0D 0D 20 C3 39 34 20 2D 20 4C 4F 43 41 54 45 44 |.. .94 - LOCATED| 00001500: 20 41 54 20 54 48 45 20 4C 4F 57 45 52 20 4C 45 | AT THE LOWER LE| 00001510: 46 54 20 43 4F 52 4E 45 52 0D 20 20 20 20 20 20 |FT CORNER. | 00001520: 20 4F 46 20 54 48 45 20 4D 45 54 41 4C 20 42 4F | OF THE METAL BO| 00001530: 58 20 48 4F 55 53 49 4E 47 20 54 48 45 0D 20 20 |X HOUSING THE. | 00001540: 20 20 20 20 20 56 49 44 45 4F 20 43 48 49 50 2E | VIDEO CHIP.| 00001550: 0D 20 C3 36 32 20 2D 20 4C 4F 43 41 54 45 44 20 |. .62 - LOCATED | 00001560: 42 45 54 57 45 45 4E 20 54 48 45 20 D3 C9 C4 20 |BETWEEN THE ... | 00001570: 43 48 49 50 20 41 4E 44 0D 20 20 20 20 20 20 20 |CHIP AND. | 00001580: 54 48 45 20 4D 45 54 41 4C 20 42 4F 58 2E 0D 20 |THE METAL BOX.. | 00001590: C3 35 37 20 2D 20 4C 4F 43 41 54 45 44 20 4A 55 |.57 - LOCATED JU| 000015A0: 53 54 20 42 45 4C 4F 57 20 54 48 45 20 56 4F 4C |ST BELOW THE VOL| 000015B0: 54 41 47 45 0D 20 20 20 20 20 20 20 52 45 47 55 |TAGE. REGU| 000015C0: 4C 41 54 4F 52 20 D6 D2 31 20 28 4A 55 53 54 20 |LATOR ..1 (JUST | 000015D0: 41 53 20 57 45 4C 4C 0D 20 20 20 20 20 20 20 43 |AS WELL. C| 000015E0: 4F 4E 4E 45 43 54 20 49 54 20 54 4F 20 50 49 4E |ONNECT IT TO PIN| 000015F0: 20 32 20 4F 46 20 D6 D2 31 29 2E 0D 0D 0D C9 46 | 2 OF ..1).....F| 00001600: 20 59 4F 55 20 4E 45 45 44 20 41 4E 59 20 48 45 | YOU NEED ANY HE| 00001610: 4C 50 20 4F 4E 20 43 4F 4E 53 54 52 55 43 54 49 |LP ON CONSTRUCTI| 00001620: 4E 47 20 0D 54 48 49 53 20 43 49 52 43 55 49 54 |NG .THIS CIRCUIT| 00001630: 20 43 48 45 43 4B 20 4F 55 54 20 41 4E 59 20 4F | CHECK OUT ANY O| 00001640: 46 20 54 48 45 20 0D 4D 41 4E 59 20 42 4F 4F 4B |F THE .MANY BOOK| 00001650: 53 20 54 48 41 54 20 48 41 56 45 20 53 43 48 45 |S THAT HAVE SCHE| 00001660: 4D 41 54 49 43 53 20 4F 4E 20 0D 54 48 45 20 C3 |MATICS ON .THE .| 00001670: 2D 36 34 2E 20 20 D4 48 49 53 20 49 53 20 41 4E |-64. .HIS IS AN| 00001680: 20 45 58 41 43 54 20 44 55 50 4C 49 43 41 54 45 | EXACT DUPLICATE| 00001690: 20 0D 4F 46 20 54 48 45 20 4F 4E 45 20 41 4C 52 | .OF THE ONE ALR| 000016A0: 45 41 44 59 20 49 4E 53 49 44 45 20 54 48 45 20 |EADY INSIDE THE | 000016B0: C3 2D 36 34 2E 0D 0D D4 48 45 20 47 52 4F 55 4E |.-64....HE GROUN| 000016C0: 44 20 57 49 52 45 20 46 52 4F 4D 20 54 48 45 20 |D WIRE FROM THE | 000016D0: D2 C3 C1 20 50 4C 55 47 20 43 41 4E 20 0D 42 45 |... PLUG CAN .BE| 000016E0: 20 53 4F 4C 44 45 52 45 44 20 54 4F 20 54 48 45 | SOLDERED TO THE| 000016F0: 20 4D 41 49 4E 20 47 52 4F 55 4E 44 49 4E 47 20 | MAIN GROUNDING | 00001700: 0D 53 54 52 49 50 20 42 45 54 57 45 45 4E 20 54 |.STRIP BETWEEN T| 00001710: 48 45 20 53 45 52 49 41 4C 20 41 4E 44 20 56 49 |HE SERIAL AND VI| 00001720: 44 45 4F 20 0D 50 4F 52 54 53 2E 20 20 D4 48 45 |DEO .PORTS. .HE| 00001730: 20 43 45 4E 54 45 52 20 57 49 52 45 20 57 49 4C | CENTER WIRE WIL| 00001740: 4C 20 42 45 20 0D 43 4F 4E 4E 45 43 54 45 44 20 |L BE .CONNECTED | 00001750: 54 4F 20 54 48 45 20 4E 45 47 41 54 49 56 45 20 |TO THE NEGATIVE | 00001760: 53 49 44 45 20 4F 46 20 54 48 45 20 0D 31 30 55 |SIDE OF THE .10U| 00001770: 46 20 45 4C 45 43 54 52 4F 4C 49 54 49 43 20 43 |F ELECTROLITIC C| 00001780: 41 50 41 43 49 54 4F 52 2E 0D 0D C9 20 53 54 49 |APACITOR.... STI| 00001790: 4C 4C 20 54 48 49 4E 4B 20 59 4F 55 20 53 48 4F |LL THINK YOU SHO| 000017A0: 55 4C 44 20 48 41 56 45 20 53 4F 4D 45 4F 4E 45 |ULD HAVE SOMEONE| 000017B0: 20 0D 46 41 4D 49 4C 49 45 52 20 57 49 54 48 20 | .FAMILIER WITH | 000017C0: 45 4C 45 43 54 52 4F 4E 49 43 53 20 49 4E 53 54 |ELECTRONICS INST| 000017D0: 41 4C 4C 20 0D 54 48 49 53 20 43 49 52 43 55 49 |ALL .THIS CIRCUI| 000017E0: 54 20 46 4F 52 20 59 4F 55 2E 0D 0D C9 46 20 59 |T FOR YOU....F Y| 000017F0: 4F 55 20 48 41 56 45 20 41 20 50 52 4F 42 4C 45 |OU HAVE A PROBLE| 00001800: 4D 20 57 49 54 48 20 53 4F 4D 45 20 0D 43 41 52 |M WITH SOME .CAR| 00001810: 54 52 49 44 47 45 53 2C 20 59 4F 55 20 57 49 4C |TRIDGES, YOU WIL| 00001820: 4C 20 48 41 56 45 20 54 4F 20 49 4E 53 54 41 4C |L HAVE TO INSTAL| 00001830: 4C 20 0D 41 20 53 57 49 54 43 48 20 42 45 54 57 |L .A SWITCH BETW| 00001840: 45 45 4E 20 50 49 4E 20 39 20 4F 46 20 C9 C3 20 |EEN PIN 9 OF .. | 00001850: D5 31 35 20 41 4E 44 20 0D 50 49 4E 20 38 20 4F |.15 AND .PIN 8 O| 00001860: 46 20 54 48 45 20 50 49 47 47 59 42 41 43 4B 45 |F THE PIGGYBACKE| 00001870: 44 20 D3 C9 C4 20 43 48 49 50 2E 20 20 0D D7 48 |D ... CHIP. ..H| 00001880: 45 4E 20 54 48 45 20 53 57 49 54 43 48 20 49 53 |EN THE SWITCH IS| 00001890: 20 4F 46 46 20 54 48 45 20 D3 C9 C4 20 43 48 49 | OFF THE ... CHI| 000018A0: 50 20 0D 49 53 20 44 52 4F 50 50 45 44 20 4F 55 |P .IS DROPPED OU| 000018B0: 54 20 4F 46 20 54 48 45 20 41 44 44 52 45 53 53 |T OF THE ADDRESS| 000018C0: 20 4D 41 54 52 49 58 20 0D 41 4E 44 20 49 4E 56 | MATRIX .AND INV| 000018D0: 49 53 41 42 4C 45 20 54 4F 20 54 48 45 20 53 59 |ISABLE TO THE SY| 000018E0: 53 54 45 4D 2E 20 20 D7 48 45 4E 20 0D 53 57 49 |STEM. .HEN .SWI| 000018F0: 54 43 48 45 44 20 4F 4E 20 54 48 45 20 43 48 49 |TCHED ON THE CHI| 00001900: 50 20 49 53 20 41 44 44 52 45 53 53 45 44 20 41 |P IS ADDRESSED A| 00001910: 54 20 0D 35 37 30 38 38 20 44 45 43 49 4D 41 4C |T .57088 DECIMAL| 00001920: 20 4F 52 20 24 C4 C6 30 30 20 48 45 58 41 44 45 | OR $..00 HEXADE| 00001930: 43 49 4D 41 4C 2E 0D 0D C1 20 47 4F 4F 44 20 50 |CIMAL.... GOOD P| 00001940: 4C 41 43 45 20 54 4F 20 4D 4F 55 4E 54 20 54 48 |LACE TO MOUNT TH| 00001950: 45 20 53 57 49 54 43 48 20 41 4E 44 0D D2 C3 C1 |E SWITCH AND....| 00001960: 20 50 4C 55 47 20 49 4E 20 4F 4E 20 54 48 45 20 | PLUG IN ON THE | 00001970: 42 41 43 4B 20 4F 46 20 54 48 45 0D 43 4F 4D 50 |BACK OF THE.COMP| 00001980: 55 54 45 52 20 41 4E 44 20 41 42 4F 56 45 20 54 |UTER AND ABOVE T| 00001990: 48 45 20 4D 4F 4E 49 54 4F 52 20 4A 41 43 4B 2E |HE MONITOR JACK.| 000019A0: 0D 0D C7 4F 4F 44 20 4C 55 43 4B 20 4F 4E 20 54 |...OOD LUCK ON T| 000019B0: 48 45 20 43 4F 4E 53 54 52 55 43 54 49 4F 4E 2E |HE CONSTRUCTION.| 000019C0: 0D 0D 0D CD 41 52 4B 20 C1 2E 20 C4 49 43 4B 45 |....ARK .. .ICKE| 000019D0: 4E 53 4F 4E 0D |NSON. |
ADDING AN EXTRA SID 6581 CHIP..THIS IS N
OT A PROJECT TO BE TACKLED .BY THE SQEAM
ISH OR PEOPLE WHO ARE .DEATHLY AFRAID OF
OPENING THEIR .COMPUTER JUST TO TAKE A
PEEK INSIDE...NOW LET'S GET RID OF THE N
ASTY STUFF .FIRST. NO LIABILITY IS ASSU
MED WITH .RESPECT TO THE USE OF THE FOLL
OWING .INFORMATION. IN OTHER WORDS IF Y
OU .SCREW-UP TRYING TO INSTALL THIS .MOD
IFICATION, THEN IT'S YOUR .RESPONSABILIT
Y... YOU DO THIS AT YOUR OWN RISK!!!!..
IF YOU DO NOT FEEL UP TO IT PLEASE .TAKE
IT TO A COMMODORE REPAIR CENTER .OR A R
EPAIR SERVICE THAT CAN WORK ON .COMPUTER
S AND LET THEM DO THE .INSTALLATION...YO
U CAN MAKE YOUR OWN PIGGY BACK .BOARD OR
YOU CAN DO WHAT I AM GOING .TO DESCRIBE
(SINCE IT IS A LITTLE .HARD TO PUT A SC
HEMATIC IN A TEXT .FILE, WELL NOT HARD J
UST CUMBERSOME)...YOU SHOULD GROUND YOUR
SELF WITH A .STATIC GUARD WRISTBAND (SUC
H AS WHAT .RADIO SHACK SELLS). EVEN THO
UGH THE .CHIP IS QUITE DURABLE, JUST THE
RIGHT .STATIC DISCHARGE CAN RUIN ALL OR
PART .OF THE SID CHIP...FOR THOSE OF YO
U THAT ARE NOT .FAMILIER WITH THE WAY PI
NS ARE .NUMBERED ON AN IC CHIP HERE IS A
.SHORT EXPLANATION. ON ONE END OF THE
.IC YOU SHOULD FIND A LITTLE NOTCH, .LOO
KING AT THE CHIP WITH THE NOTCH AT .THE
TOP THE NUMBERING GOES THIS WAY. .THE U
PPER LEFT CORNER OF THE CHIP IS .PIN 1 A
ND THEY ARE NUMBERED .CONSECUTIVELY, COU
NTER-CLOCKWISE .AROUND THE CHIP. SOME C
HIPS DO NOT .HAVE A NOTCH IN ONE END, BU
T INSTEAD .DOT IS PLACED IN ONE OF THE C
HIP .CORNERS TO DESIGNATE THAT PIN 1 .ST
ARTS IN THAT LOCATION... NOTC
H. ----,,----. 1-!.
!-8. 2-! DOT !-7. 3-!
!-6. 4-! !-5.
----------...YOU NEED THE FOLLOWING
PARTS...1 - 6581 SID CHIP.1 - 2N2222 TR
ANSISTOR.2 - 470PF CAPACITORS.2 - 1K OHM
1/4 WATT RESISTORS.1 - .001 PF CAPACITO
R.1 - 10K OHM 1/4 WATT RESISTOR.1 - 10 U
F ELECTROLITIC CAPACITOR.1 - 5 INCH LENG
TH OF WIRE.1 - 5 INCH LENGTH OF SHIELDED
CABLE.1 - SURFACE MOUNT FEMALE RCA PLUG
(THIS. IS WHAT YOU NORMALLY FIND ON
THE. BACK OF YOUR STEREO...FIRST BEND
OUT PINS 23, 24 AND 26 AND .CUT THEM OF
F OF THE 6581 SID CHIP. .THESE ARE FOR
THE TWO ANALOG AND ONE .AUDIO INPUT LINE
S. THEY WILL CAUSE .PROBLEMS IF CONNECT
ED AND SINCE THEY .WILL NOT BE USED IT I
S BEST TO REMOVE .THEM.. .NOW BEND OUT
PINS 1, 2, 3, 4, 8, 27...SOLDER ONE OF T
HE 470PF CAPACITORS TO .PINS 1 AND 2 THE
N SOLDER THE OTHER .470PF CAPACITOR TO P
INS 3 AND 4. THE .CAPACITORS CONTROL TH
E UPPER AND .LOWER FREQUENCY RANGE OF TH
E SID .CHIP...SOLDER ONE END OF YOUR WIR
E TO PIN 8 .OF THE SID CHIP. THIS IS FO
R THE .CHIP SELECT LINE. WE WILL CONNEC
T .THIS TO THE MAIN MOTHER BOARD, SO AS
.TO PROVIDE THE ADDRESSING FOR THE NEW .
CHIP (DESCRIBED LATER)...NOW SOLDER THE
REMAINING PINS .(EXCLUDING THE ONES WE H
AVE BENT OUT .AND ALSO REMOVED 1, 2, 3,
4, 8, 23, .24, 26 AND 27) TO THE SID CHI
P .CURRENTLY IN YOUR COMPUTER. YOU MAY
.HAVE TO BEND THOSE PINS INWARD JUST A .
LITTLE FOR THEM TO GET A GOOD GRIP ON .T
HE SID CHIP. BE VERY CAREFUL NOT .LEAVE
THE SOLDERING IRON ON THE CHIP .TOO LON
G AS YOU COULD RUIN BOTH SID .CHIPS. MA
KE SURE THERE IS GOOD SIZED.GAP BETWEEN
BOTH CHIPS TO PROVIDE.AIR CIRCULATION.
SINCE THEY DO GET.VERY HOT AT TIMES YOU
MAY HAVE TO.HEAT SINK AT LEAST THE BOTTO
M ONE.(BOTH IF YOU CAN)...NOW THAT YOU H
AVE THE CHIPS SOLDERED .TOGETHER (PLACE
THE SID CHIPS BACK IN.THE SOCKET IF YOU
REMOVED THEM), .SOLDER THE WIRE FROM PIN
8 (ON THE.SID CHIP) TO PIN 9 OF IC U15.
(CHIP 74LS239)...NOW PARTIALLY REASSEMBL
E YOUR .COMPUTER (BE CAREFUL THAT NOTHIN
G .SHORTS OUT THE PINS STILL STICKING .O
UT). TURN THE COMPUTER ON AND LOAD .A P
ROGRAM THAT WILL PRODUCE SOUND ON .ALL T
HREE VOICES. IF YOU GET SOUND .THEN SO
FAR SO GOOD. TURN OFF THE .COMPUTER AND
DISASSEMBLE THE CASE...DRILL A HOLE IN
THE BACK END OF THE .COMPUTER JUST LARGE
ENOUGH TO ANCHOR .THE RCA PLUG. THEN S
OLDER THE CENTER .WIRE OF THE SHIELDED C
ABLE TO THE .CENTER POST OF THE RCA PLUG
. INSERT .THE WIRE THROUGH THE HOLE YOU
HAVE .JUST DRILLED AND ANCHOR THE PLUG
TO .THE CASE. NOW SOLDER THE GROUND WIR
E .TO THE GROUND TAB ON THE RCA PLUG...H
ERE COMES THE DIFFICULT PART TO .EXPLAIN
. THIS IS THE COUPLING .CIRCUIT FOR THE
AUDIO OUTPUT. HERE .IS A ROUGH SCHEMAT
IC.....PIN 27 ON 12VOLTS DC.
SID CHIP RESISTOR !.--. 10
K OHM !COLLECTOR.27!----.--/!/!/--.---
--O 2N2222.--' ! ! !EMITT
ER. ! ! !. <RESI
STOR ! !. >1K ! ! +.
<OHM ! :--!]---TO RCA.
! ! ! 10 UF. !
! !ELECTROL CAP. !
! !.GROUND--- ! !.
- ! <RESISTOR.
! >1K. !
<OHM. ! !.
! !. ! !.
! ---GROUND.
! -. !.
=== .001 PF.
! CAPACITOR. !.
---GROUND. -...
YOU CAN GET THE 12 VOLTS YOU NEED FOR .T
HE TRANSISTOR FROM ONE OF THE FOLLOWING.
ELECTROLITIC CAPACITORS. START WITH THE
.FIRST ONE IN THE LIST. THE FARTHER DOW
N.THE LIST YOU GO THE MORE NOISE YOU MAY
.NOTICE IN THE OUTPUT. IF ALL ELSE FAIL
S.YOU CAN GET IT DIRECTLY FROM PIN 2 OF.
VOLTAGE REGULATOR VR1 (I STRONGLY DO NOT
.RECOMMEND THIS!!!!)...CONNECT TO THE P
LUS SIDE OF THE ELECTROLITIC.CAPACITORS.
.. C94 - LOCATED AT THE LOWER LEFT CORNE
R. OF THE METAL BOX HOUSING THE.
VIDEO CHIP.. C62 - LOCATED BETWEEN
THE SID CHIP AND. THE METAL BOX..
C57 - LOCATED JUST BELOW THE VOLTAGE.
REGULATOR VR1 (JUST AS WELL. C
ONNECT IT TO PIN 2 OF VR1)....IF YOU NEE
D ANY HELP ON CONSTRUCTING .THIS CIRCUIT
CHECK OUT ANY OF THE .MANY BOOKS THAT H
AVE SCHEMATICS ON .THE C-64. THIS IS AN
EXACT DUPLICATE .OF THE ONE ALREADY INS
IDE THE C-64...THE GROUND WIRE FROM THE
RCA PLUG CAN .BE SOLDERED TO THE MAIN GR
OUNDING .STRIP BETWEEN THE SERIAL AND VI
DEO .PORTS. THE CENTER WIRE WILL BE .CO
NNECTED TO THE NEGATIVE SIDE OF THE .10U
F ELECTROLITIC CAPACITOR...I STILL THINK
YOU SHOULD HAVE SOMEONE .FAMILIER WITH
ELECTRONICS INSTALL .THIS CIRCUIT FOR YO
U...IF YOU HAVE A PROBLEM WITH SOME .CAR
TRIDGES, YOU WILL HAVE TO INSTALL .A SWI
TCH BETWEEN PIN 9 OF IC U15 AND .PIN 8 O
F THE PIGGYBACKED SID CHIP. .WHEN THE S
WITCH IS OFF THE SID CHIP .IS DROPPED OU
T OF THE ADDRESS MATRIX .AND INVISABLE T
O THE SYSTEM. WHEN .SWITCHED ON THE CHI
P IS ADDRESSED AT .57088 DECIMAL OR $DF0
0 HEXADECIMAL...A GOOD PLACE TO MOUNT TH
E SWITCH AND.RCA PLUG IN ON THE BACK OF
THE.COMPUTER AND ABOVE THE MONITOR JACK.
..GOOD LUCK ON THE CONSTRUCTION....MARK
A. DICKENSON.
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