Build Log : Apple 1 Replica

Discussion in 'Retro & Arcade Worklogs' started by aXLe, Apr 17, 2013.

  1. aXLe

    aXLe Member

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    I'm a bit fond of the early Apple computers (Apple ][ mostly - my thread here ), and have always been interested in the computer that started it all - the Apple 1. For the average Joe these are unobtainium - rare as hens teeth, and not affordable.


    [​IMG]

    So, I thought I'd assemble a replica. There are a couple of very good replica boards available, and I've chosen to use the Newton-1 NTI board. The PCB arrived the other day :


    [​IMG]


    I'm wanting to build it as accurately as possible, so I plan to use parts that are date coded from the period that these were built (1976-1977) - this makes it harder, but I want a decent replica as a working display piece :)

    As Woz decided to socket every IC on the board, this does mean that I can start off with IC's from a later time, and swap them out when I find the correct date coded ones. The soldered parts though I want to have right from the start. This means tracking down old carbon resistors with the same appearance as the originals, and the the old caps, etc etc.

    Finding all these parts is going to be a big job! It will take me quite some time I expect, so this thread may not be updated too regularly. I've manged to locate most of the correct IC sockets that were used at the time, so that is a good start.

    This is what it should look like when finished. This genuine Apple 1 one sold at Sotheby's for $375,000 last year. It is estimated that less than 50 of the 200 originally built still exist today:

    [​IMG]

    Another :

    [​IMG]


    Those white ceramic MOS 6502's are hard to find. If anyone has any sources for this old stuff, please let me know :)

    The Apple 1 was sold as an assembled PCB only - you had to source your own keyboard, power transformers, cassette deck (if you purchased the cassette I/O board) and attach it to a video display of some sort (often a TV) :

    [​IMG]

    [​IMG]


    Note the original logo on the documentation included with the Apple 1 :


    [​IMG]


    As Apple didn't supply a case for the Apple 1, many built their own :


    [​IMG]

    [​IMG]


    Steve Jobs (Left) and Steve Wozniak (right) with Woz's creation :


    [​IMG]


    And so it begins :)
     
    Last edited: Oct 16, 2019
  2. OP
    OP
    aXLe

    aXLe Member

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    Parts list which includes parts obtained and parts still needed. Ultimately require date codes from 1974-1977 for date coded parts :

    Part (Qty)

    Power Supply Magnetics
    Stancor Power Transformer Vin 230AC Vout 28AC 1A Center Tapped (1)
    Stancor Power Transformer Vin 230AC Vout 10AC 3A Center Tapped (1)
    power connector (1) INSTALLED

    Keyboard
    keyboard (1) - from old Apple ][ or similar

    Video Hookup
    video connector (1) INSTALLED

    Linear
    NS LM323K +5V voltage regulator - 3Amp (1) INSTALLED
    NS LM320 MP-5 (1)
    NS LM320 MP-12 (1)
    NS LM340 MP-12 (1)
    Fairchild NE555 (1) INSTALLED SIGNETICS - LOOKING FOR FAIRCHILD

    Transistors
    MPS3704 (1)

    Diodes
    Fairchild 1N4001 Diodes - DO-35 axial (4)
    Fairchild 1N914 Diode (4) INSTALLED USED ONES - THANKS ATARI :)
    GE A14F Diode DO-27 package (4) INSTALLED

    IC's
    Signetics N8T97B Tri-State Hex Buffer (2) INSTALLED, NOT MATCHING DATES THOUGH
    MMI 6301-1J 256x4 PROM (2) FOUND - WILL BE RE-MARKED
    Signetics 2513N/CM2140 Character Generator (1) INSTALLED BUT STILL LOOKING FOR CORRECT DATE CODE
    Signetics 2504v 1K-Bit Dynamic Shift Register (7) INSTALLED - THANKS GIULIANO!
    Signetics 2519b Hex 40-Bit Static Shift Register (1) INSTALLED - THANKS GIULIANO!
    AMI 6820 PIA (1)
    Signetics DS0025C Two Phase MOS Clock Driver (1) INSTALLED - THANKS RICHARD!
    Mostek 6502 (1) INSTALLED, BUT NOT QUITE RIGHT VERSION FOR PRE-NTI
    Fairchild TTL 7400 (9N00/7400) (3)
    Fairchild TTL 7402 (1)
    Fairchild TTL 7404 (1)
    Fairchild TTL 7408 (1)
    Fairchild TTL 7410 (9N10/7410) (2)
    Fairchild TTL 7427 (9N10/7427) (1)
    Fairchild TTL 7432 (1)
    Fairchild TTL 7451 (pcb says 7450, actual part used was 7451) (1)
    Fairchild TTL 74123 (1)
    Fairchild TTL 74154 (1)
    Fairchild TTL 74157 (2) INSTALLED
    Fairchild TTL 74160 (1)
    Fairchild TTL 9316 (board says 74161, actual part used was 9316) (5)
    Fairchild TTL 74166 (1)
    Fairchild TTL 74174 (1)
    Fairchild TTL 74175 (1) [
    Fairchild TTL 74S257 Ceramic (4)
    Mostek MK4096-11 4kx1 DRAM (16) INSTALLED MK4096P-19 - MIGHT WORK?

    Capacitors (.3 lead spacing)
    .001uF RMC 10% Ceramic Disc (1) INSTALLED - THANKS RICHARD!
    .01uF Dielectron 25V Ceramic Disc (4)
    0.1uF BEL Ceramic Disc (17) INSTALLED - THANKS GIULIANO!
    47pF CDE 10% Mica (1)
    Phillips blue Electrolytic 22uF 25V Axial (5) INSTALLED - THANKS GIULIANO!
    Spraque 39D 2400uF 25 Volt axial Cap (2)
    Spraque 39D 5300uF 15 Volt axial cap (1) INSTALLED 1978 DATE CODE (WANT EARLIER)

    Resistors
    Allen Bradley 5% 1/4 watt 10k ohms (3) INSTALLED
    Allen Bradley 5%1/4 watt 1500 ohms (1) INSTALLED 1K2 (AS PER ORIGINALS)
    Allen Bradley 5% 1/4 watt 3000 ohms (12) INSTALLED
    Piher 5% 1/4 watt 330 ohms (1) INSTALLED
    Allen Bradley 5% 1/4 watt 390 ohms (2) INSTALLED
    Allen Bradley 5% 1/4 watt 7.5 K (6) INSTALLED
    Allen Bradley 5% 1/4 watt 27k ohms (1) INSTALLED
    Pot - Spectrol 100 ohms 62-1-1-/2-101 (1) INSTALLED - THANKS MICHAEL!

    Connectors
    Cinch 44-pin no-ears connector, 50 44S 30 1/252 22 30 211 (1)

    Misc
    Torotel HC49/U Crystal -14.3181 with 1976 date code (1) INSTALLED - THANKS ATARI!
    Heatsink -Wakefield 680-10A (1) INSTALLED

    IC Sockets
    TI closed back 8 pin (1) INSTALLED
    TI closed back 16 pin (42) INSTALLED
    TI closed back 14 pin (12) INSTALLED
    TI closed back 24 pin (2) INSTALLED
    TI closed back 40 pin (2) INSTALLED
     
    Last edited: Jan 15, 2019
  3. OP
    OP
    aXLe

    aXLe Member

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    This image gives you an idea of the appearance of some of the vintage caps and resistors I need to find

    [​IMG]
     
    Last edited: Oct 16, 2019
  4. OP
    OP
    aXLe

    aXLe Member

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    The components I've sourced so far arrived today.

    TI closed frame 16 pin sockets :


    [​IMG]


    TI Closed 40 pin sockets and 8 pin socket in background :


    [​IMG]


    All these old TI sockets have a mylar backing :


    [​IMG]


    Some of the resistors (3 * 1/4W 5% 10K ohm carbon comp resistor with yellow stripe, 1/4W 5% 330 ohm carbon film resistor with reddish brown body, 2 * 1/4W 5% 390 ohm carbon comp resistor, 6 * 1/4W 5% 7.5K ohm carbon comp resistor) , RMC JF.001 10% ceramic disc capacitor, National Semi DS/MH0025C with 1975 date code, Signetics NE555V with 1975 date code, 6-pin power connector, 4-pin video connector,


    [​IMG]
     
    Last edited: Oct 16, 2019
  5. HeXa

    HeXa Member

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    sweet

    I can see a trip to the pre-loved electronic crap area of you local junk yard :p
     
  6. ThunderBuilder

    ThunderBuilder Member

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    Parts Found

    i know where you can find a whole bunch of parts for this :3
    like 22uf 25v Axial Electrolytic Capacitor
     
  7. Kafoopsy

    Kafoopsy Member

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    Getting a period MOS 6502 in white ceramic will be the most expensive item. They go for up to $1000 or more.
     
  8. OP
    OP
    aXLe

    aXLe Member

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    Yep - I need to be a little lucky for that one, but in the meantime I'll use a later cheap plastic one. At least it is socketed :)
     
  9. dave_dave_dave

    dave_dave_dave Member

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    Very awesome. :leet:
     
  10. AMLagonda

    AMLagonda Member

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  11. Dreakoth

    Dreakoth Member

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    I have a box of old electronic components - have you sourced all the resistors and caps?
     
  12. OP
    OP
    aXLe

    aXLe Member

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    No - Im still looking for most of the parts - it is quite a challenge!

    I'd definitely be interested in anything you have that matches the original parts from around 1976 :)
     
  13. LaurieBoshell

    LaurieBoshell New Member

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    Apple-1 replica parts

    Hi AXle,
    I too am looking for parts.
    Do you have any spare 16pin TI closed loop sockets to spare?
    I can probably help with some of the signetics 1970's TTL stuff.
    Laurie
     
    Last edited: May 31, 2013
  14. GumbyNoTalent

    GumbyNoTalent Member

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    You will need a mullet like Wazza's to be authentic. ;)
     
  15. OP
    OP
    aXLe

    aXLe Member

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    I'm still hunting down parts - some more arrived today :


    [​IMG]



    I now have all the authentic sockets and resistors, plus the 2 PROM's for the mainboard.
     
    Last edited: Oct 16, 2019
  16. Agg

    Agg Lord of the Pings

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    Any updates to this one? Looks like a cool project. :)
     
  17. OP
    OP
    aXLe

    aXLe Member

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    Still hunting stuff down - I have found some more goodies of the era :

    LM323K 5V regulator :

    [​IMG]


    MOS 6502 CPU :

    [​IMG]


    sorry for the lack of updates - its very slow going to get this old stuff :)
     
    Last edited: Oct 16, 2019
  18. Grant

    Grant Member

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    Where'd you get the CPU? Did you just find an acceptable deal on the part itself or did you get your hands on a donor computer?

    I imagine you'll probably need to buy at least one vintage machine from overseas, from looking on Wikipedia it seems the Commodore PET and Acorn 1 are similarly-aged, but I don't know how expensive they are (the PET has a built-in monitor, which would make it heavy)
     
  19. nekomata

    nekomata Member

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    Great thread, very interesting!

    When you read soething si from the 70's you dont think to much of it until you realize your sourcing parts from 40 years ago!

    Hope you track everything down mate!
     
  20. ThunderbirdMoz

    ThunderbirdMoz Member

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    Looks really good. Wish you luck in finding all the rest of the necessary parts quickly and easily.
     

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