A1050
About the A1050 PCB
A1050 is an open source PCB design by TheOrangeStrain, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 160 × 55 mm, with 20 components from 5 distinct parts.
Other key parts include the HM50464. By type, the board carries 9 capacitors, 8 ICs, 2 resistors and 1 connector.
It belongs with the retro computing designs in this gallery.
From the project
A knockoff of the A1050 front mounted RAM Expansion for the Amiga 1000
FYI: Corrected the Mouser link for the 39 ohm resistor pack.
The problem: I have a craiglist.com Amiga A1000 rescue. Many parts are missing. Basically I have the case, motherboard, daughterboard and power supply. I was able to find key parts (Amiga 2000 keyboard, keyboard adapter for A1000, mouse and replacement Paula). Howevery, the system only had 256k of RAM. This is not enough to do, well, just about anything. Standalone RAM expansions like the A1050 are rare and often expensive if you are lucky enough to find one. So I decided to design build my one A1050 knockoff.
Main components on the A1050
A1050 bill of materials (BOM)
20 components, 5 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | HM50464 | DIP-18_W7.62mm | U1, U2, U3, U4, U5, U6, U7, U8 |
| 1 | Conn_Amiga1000_ramex_02x30_number_side_letter_side | Connector_horizontal_amiga1.04_GREEN | J1 |
| 8 | 220nf | C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C8 |
| 1 | 10uF | C_Disc_D4.3mm_W1.9mm_P5.00mm | C9 |
| 2 | R_Pack08 | DIP-16_W7.62mm | RN1, RN2 |
A1050 design files
The KiCad project lives in the TheOrangeStrain/Amiga-A1050-RAM-Expansion repository on GitHub; these links point at the commit this page was built from.
A1050: common questions
How big is the A1050 PCB?
The A1050 measures 160 × 55 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the A1050?
20 components, from 5 distinct parts. The full bill of materials is listed on this page.
Where can I download the A1050 design files?
From the TheOrangeStrain/Amiga-A1050-RAM-Expansion repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the A1050 design in my own project?
Yes, under the terms of its CC0-1.0 license, which TheOrangeStrain chose for the repository.
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