RC1 ACIA
About the RC1 ACIA PCB
RC1 ACIA is an open source PCB design by tebl, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 99.1 × 58.4 mm, with 20 components from 13 distinct parts.
Other key parts include the R6551, 74LS00 and 74LS138. By type, the board carries 5 capacitors, 5 resistors, 4 ICs, 4 connectors and 2 crystals.
It belongs with the retro computing and displays & leds designs in this gallery.
From the project
A recreation of the MOS KIM-1 microcomputer, the start of the Commodore-line of computers. Complete with hex keypad, six digit displays and a lot of 8-bit fun!
Originally created by MOS in order to show off their new 6502-processor, it was a success that tapped into a market they probably never knew themselves was growing into a force to be reckoned with - the homecomputing market! Later bought up by little-known typewriter-manufacturer Commodore, the KIM-1 is an iconic piece of hardware and since I can't afford to buy one I'll build one instead.
Main components on the RC1 ACIA
RC1 ACIA bill of materials (BOM)
20 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | R6551 | DIP-28_W15.24mm_Socket_LongPads | U1 |
| 1 | 74LS00 | DIP-14_W7.62mm_Socket_LongPads | U2 |
| 2 | 74LS138 | DIP-16_W7.62mm_Socket | U3, U4 |
| 1 | 1.8432Mhz | Oscillator_DIP-14 | X1 |
| 1 | 1.8432Mhz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | Expansion | Pin_Header_Angled_1x39_Pitch2.54mm | J1 |
| 1 | ADDRESS | Pin_Header_Straight_2x06_Pitch2.54mm | J2 |
| 1 | CONFIG | Pin_Header_Straight_2x06_Pitch2.54mm | J3 |
| 1 | FTDI | Pin_Header_Angled_1x06_Pitch2.54mm | J4 |
| 4 | 100nF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C3, C4 |
| 1 | 27pF | C_Disc_D4.7mm_W2.5mm_P5.00mm | C5 |
| 1 | 1M* | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 4 | 2k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R5, R6 |
RC1 ACIA design files
The KiCad project lives in the tebl/RC-ONE repository on GitHub; these links point at the commit this page was built from.
RC1 ACIA: common questions
How big is the RC1 ACIA PCB?
The RC1 ACIA measures 99.1 × 58.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the RC1 ACIA?
20 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the RC1 ACIA design files?
From the tebl/RC-ONE repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the RC1 ACIA design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which tebl chose for the repository.
More boards in RC-ONE
RC1 UI
99.1 × 97.2 mm89 parts2LCERN-OHL-1.225
RC1 CPU
99.1 × 99.1 mm45 parts2LCERN-OHL-1.225
AVR/ArduinoRC1 8K ExRAM
99.1 × 83.8 mm36 parts2LCERN-OHL-1.225
RC1 Sound Interface
99.1 × 68 mm35 parts2LCERN-OHL-1.225
RC1 TMS9918A
99.1 × 76.8 mm32 parts2LCERN-OHL-1.225
RC1 Keypad
66 × 76.2 mm30 parts2LCERN-OHL-1.225
RC1 Real Time Clock
99.1 × 59.7 mm28 parts2LCERN-OHL-1.225
RC1 Keypad MX
72.4 × 122.6 mm26 parts2LCERN-OHL-1.225
RC1 65K Expansion
99.1 × 55.2 mm23 parts2LCERN-OHL-1.225
RC1 Compact Flash
99.1 × 54.6 mm20 parts2LCERN-OHL-1.225
AVR/ArduinoRC1 Keypad to USB
72.4 × 45.1 mm8 parts2LCERN-OHL-1.225
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