The repository contains build details for the Apple-1 computer. You can find the parts list (and specific parts that I used in my build) below.
Apple-1 motherboards are available for sale at https://www.kalinchuk.com/product-page/apple-1-replica-pcb-gold-plated. The ACI (Apple Cassette Interface) boards are available at https://www.kalinchuk.com/product-page/aci-apple-cassette-interface-pcb-for-the-apple-1-gold-plated. The Serial Interface boards are available at https://www.kalinchuk.com/product-page/serial-interface-pcb-for-the-apple-1-gold-plated.
This repository was created in conjunction with the Building the Apple-1 YouTube video. Mike Willegal also made an Apple-1 construction guide that I thought was great.
The ACI assembly and operation YouTube video contains detailed instructions. You can also reference Mike Willegal's Guide which contains a lot of additional information.
The case was assembled in this YouTube video and you can find additional information below under the "Case" subheading.
You can find the Mainboard, ACI PCB and Serial Board gerbers under the "Gerbers" directory.
| PART | DESCRIPTION | QUANTITY | SOURCE |
|---|---|---|---|
| 2513 | Char. generator | 1 | eBay; Can be substituted with CM2140 |
| 8T97 | Bus driver | 2 | eBay |
| MMI 3601 | 256x4 PROM (A1 & A2) | 2 | apple-1-replica.com or eBay |
| 2504v | Shift register | 7 | apple-1-replica.com or eBay; Can be substituted with AM2804 |
| 2519b | Shift register | 1 | eBay |
| 6820 | Parallel interface adapter | 1 | apple-1-replica.com or eBay; Can be substituted with a 6520 |
| DS0025C | Clock driver | 1 | eBay |
| 6502 | CPU | 1 | eBay |
| 7400 | Quad NAND gate | 3 | DigiKey; Jameco; eBay |
| 7402 | Quad NOR gate | 1 | DigiKey; Jameco; eBay |
| 7404 | Hex inverter | 1 | DigiKey; Jameco; eBay |
| 7408 | Quad and gate | 1 | DigiKey; Jameco; eBay |
| 7410 | Three input nand | 2 | DigiKey; Jameco; eBay |
| 74123 | Dual one-shot | 1 | DigiKey; Jameco; eBay |
| 74154 | 4:16 demux | 1 | DigiKey; Jameco; eBay |
| 74157 | 2:1 selector | 2 | DigiKey; Jameco; eBay |
| 74160 | 4 bit counter | 1 | DigiKey; Jameco; eBay |
| 74161 | 4 bit counter | 5 | DigiKey; Jameco; eBay |
| 74166 | Shift register | 1 | DigiKey; Jameco; eBay |
| 74174 | Hex flip flop | 1 | DigiKey; Jameco; eBay |
| 74175 | Quad flip flop | 1 | DigiKey; Jameco; eBay |
| 7427 | Triple 3 input nor gates | 1 | DigiKey; Jameco; eBay |
| 7432 | Quad or gate | 1 | DigiKey; Jameco; eBay |
| 7450 | 2 input and gate | 1 | DigiKey; Jameco; eBay |
| 74S257 | 2:1 selector | 4 | DigiKey; Jameco; eBay |
| MK4096 | 4kx1 DRAM | 16 (8 min) | apple-1-replica.com or eBay; Can be substituted with an MK4027 |
| NE555 | Cursor timer | 1 | DigiKey; Jameco |
| SCM 22D | 44 pin expansion connector | 1 | here or eBay or use a substitute 44 pin connector |
| Power Connector | 6 pin 3.96mm connector | 1 | DigiKey |
| Video Connector | 4 pin 3.96mm connector | 1 | DigiKey |
| Power header | 6 pin header | 1 | DigiKey |
| Video header | 4 pin header | 1 | DigiKey |
| P-8667 | Stancor transformer | 1 | rs-online or eBay |
| P-8380 | Stancor transformer | 1 | rs-online or eBay |
| 100 ohm | Pot video adjust | 1 | DigiKey; Jameco |
| 330 ohm | Orange-orange-brown | 1 | DigiKey; Jameco |
| 390 ohm | Orange-white-brown | 2 | DigiKey; Jameco |
| 1500 ohm | Brown-green-red | 1 | DigiKey; Jameco |
| 3000 ohm | Orange-black-red | 12 | DigiKey; Jameco |
| 7.5K ohm | Voilet-green-red | 6 | DigiKey; Jameco |
| 10K ohm | Brown-black-orange | 3 | DigiKey; Jameco |
| 27K ohm | Red-violet-orange | 1 | DigiKey; Jameco |
| .001uF | Ceramic capacitor | 1 | DigiKey; Jameco |
| .01uF | Ceramic capacitor | 4 | DigiKey; Jameco |
| .1uF | Ceramic capacitor | 17 | DigiKey; Jameco |
| 47pF | Mica capacitor for video | 1 | DigiKey; Jameco |
| 22uF | Electrolytic capacitor | 5 | DigiKey; Jameco |
| 2400uf | Electrolytic capacitor | 2 | DigiKey; Jameco |
| 5300uF | Electrolytic capacitor | 1 | DigiKey; Jameco |
| 1n914 | Diode | 4 | DigiKey; Jameco |
| 1N4001 | Rectifier | 4 | DigiKey; Jameco |
| MR500/A14F | Rectifier | 4 | DigiKey; Jameco |
| MPS3704 | Video output transistor | 1 | DigiKey; Jameco |
| 14.31818 MHz | Crystal oscillator | 1 | DigiKey; Jameco |
| LM323K | +5 volt regulator | 1 | DigiKey; Jameco |
| LM340 MP-12 (LM7812) | +12 volt regulator | 1 | DigiKey; Jameco |
| LM320 MP-12 (LM7912) | -12 volt regulator | 1 | DigiKey; Jameco |
| LM320 MP-5 (LM7905) | -5 volt regulator | 1 | DigiKey; Jameco |
| heatsink for LM323K | 1 | DigiKey; Jameco | |
| 16 pin socket | 42 | DigiKey; Jameco | |
| 14 pin socket | 12 | DigiKey; Jameco | |
| 8 pin socket | 1 | DigiKey; Jameco | |
| 24 pin socket | 2 | DigiKey; Jameco | |
| 40 pin socket | 2 | DigiKey; Jameco |
| PART | DESCRIPTION | QUANTITY | SOURCE |
|---|---|---|---|
| 16 pin socket | For PROMs | 2 | DigiKey; Jameco; |
| 14 pin socket | For 74xx ICs | 3 | DigiKey; Jameco; |
| 8 pin socket | For LM311 | 1 | DigiKey; Jameco; |
| LM311 | Voltage comparator | 1 | DigiKey; Jameco; |
| 7402 | Quad 2 input nor gate | 1 | DigiKey; Jameco; |
| 7410 | Triple 3 input nand gate | 1 | DigiKey; Jameco; |
| 74LS74 | Dual D type flip flop | 1 | DigiKey; Jameco; 74LS74 works better than 7474 |
| 6301 | APPLE-A3 256x4 PROM | 1 | eBay; I used 82S129 |
| 6301 | APPLE-A4 256x4 PROM | 1 | eBay; I used 82S129 |
| 0.1uF | Ceramic capacitor | 1 | DigiKey; Jameco; |
| 100 ohm | Brown-black-brown | 2 | DigiKey; Jameco; |
| 3K | Orange-black-red | 1 | DigiKey; Jameco; |
| 10K | Brown-black-orange-gold | 1 | DigiKey; Jameco; |
| 10K | 1% resistor | 4 | DigiKey; Jameco; |
| 47K | Yellow-violet-orange | 1 | DigiKey; Jameco; |
| 100K | Brown-black-yellow | 1 | DigiKey; Jameco; |
| MPS3704 | Transistor | 2 | DigiKey; Jameco; |
| LED | Red | 1 | DigiKey; Jameco; |
| Switchcraft #41 | Audio jack | 2 | eBay |
| Mono audio cable | 1 | Amazon |
Refer to https://github.com/flowenol/apple1serial for the parts list and operation of the serial board.
| PART | DESCRIPTION | QUANTITY | SOURCE |
|---|---|---|---|
| Fan | 110V, 0.05A, 60mmx60mm | 1 | DigiKey |
| Fan Grill | 60mmx60mm | 1 | DigiKey |
| Power Switch | SPST 125V | 1 | DigiKey |
| Acrylic Panels | See below for the list of panels purchased | N/A | TAP Plastics |
| Frame | 1/2" L-shape aluminum | 2 | Lowes |
I decided to build a Byte Shop style case for my Apple-1 but made it out of acrylic so the insides could be seen. I purchased all the panels I needed from an online store called TAP Plastics. You can see the order details below:
And this is how it turned out after being assembled:
I have found that the Apple-1 is fairly reliable. If you do run into reliability issues, I would recommend taking a look at Uncle Bernies "reliability mod" at https://www.applefritter.com/content/part-path-towards-rock-solid-apple-1-builds.
You can find some audio-based software at https://www.isdi.com/Apple1/SW/ including Apple Basic.