2 layers150 × 120 mm
2 layers180 × 65 mm
Terminal
ash6502/az030168030-based homebrew computer
- Size
- 180 × 65 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 204
- Pads
- 312
- Tracks, vias
- 142, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 30 Sep 2026
- Updated
- 4 Nov 2026
Overview
Terminal is an open-source printed circuit board by ash6502, from the ash6502/az030 repository on GitHub, published under the MIT licence. It is a 2-layer board of 180 × 65 mm with 31 parts on 204 nets, routed with 142 tracks and 0 vias.
It is built around the 74LS245SC, 74LS157PC and 74HC86D, with the 74LS04PC, 74LS10PC and 74LS161DC among its other parts. Its parts include 15 capacitors, 14 ICs, 1 connector and 1 crystal.
Main components
974LS245SC
-0℃~+70℃ 12ns@5V,45pF 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Output enable Schmitt trigger Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74LS157PC
PDIP-160℃~+70℃ 4.75V~5.25V Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
74HC86D
SO-14-40℃~+125℃ 1.5V~4.2V 20ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series XOR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS10PC
PDIP-140℃~+70℃ 3 3.3mA 4.75V~5.25V 74LS Series NAND Gate PDIP-14 Logic GatesonsemiLogic Gates
74LS161DC
-0℃~+70℃ 14ns 32MHz 4 4.75V~5.25V 74LS 93mW Asynchronous Binary Counter Programmable divide ratio、Reset function、Cascade counter、Synchronous counting Rising Edge Synchronous - Counters, DividersTexas InstrumentsCounters, Dividers74LS166AP-E
DIP-16-20℃~+75℃ 14ns@5V,15pF 25MHz 4.75V~5.25V 400mW 400uA 74LS 8 8mA Asynchronous clear function Parallel or Serial to Serial DIP-16 Shift Registers ROHSRenesas ElectronicsShift Registers
74LS174DC
-0ns 0℃~+70℃ 1 16mA 20ns 30MHz 30ns@5V,15pF 4.75V~5.25V 400uA 6 74LS Series 8mA Asynchronous Push-Pull Reset Rising Edge - Flip Flops ROHSonsemiFlip Flops
74LS374PC
PDIP-200ns 0℃~+70℃ 1 20ns 28ns@5V,45pF 35MHz 4.75V~5.25V 45mA 74LS Series 8 D-Type Rising Edge Tri-State PDIP-20 Flip FlopsonsemiFlip Flops
README
README.mdaz030 - a 68030-based homebrew computer
! AI DISCLAIMER !
Claude Code was used in the creation of this
info
this project is something im working on and have been working on for about a few weeks now (?)
todo: write a new readme
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15 |
| 3 | 74LS157 | Package_DIP:DIP-16_W7.62mm | U4, U5, U6 |
| 1 | 14.31818MHz | Oscillator:Oscillator_DIP-14_LargePads | Y1 |
| 1 | 28C256 | Package_DIP:DIP-28_W15.24mm_LongPads | U8 |
| 1 | 74HC86 | Package_DIP:DIP-14_W7.62mm_LongPads | U13 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm_LongPads | U14 |
| 1 | 74LS10 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | 74LS161 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | 74LS166 | Package_DIP:DIP-16_W10.16mm_LongPads | U11 |
| 1 | 74LS174 | Package_DIP:DIP-16_W10.16mm_LongPads | U12 |
| 1 | 74LS245 | Package_DIP:DIP-20_W7.62mm_LongPads | U9 |
| 1 | 74LS374 | Package_DIP:DIP-20_W7.62mm_LongPads | U10 |
| 1 | CY62256-70PC | Package_DIP:DIP-28_W15.24mm_LongPads | U7 |
| 1 | Conn_Coaxial | vera-module:RCJ-014 | J1 |
| 1 | MC6845 | Package_DIP:DIP-40_W15.24mm_LongPads | U1 |
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Questions
How big is the Terminal PCB?
It measures 180 × 65 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Terminal use?
31 parts, built around the 74LS245SC, 74LS157PC, 74HC86D and 74LS04PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Terminal KiCad files?
From the ash6502/az030 repository on GitHub, at the commit this page was made from: the board is kicad/terminal/terminal.kicad_pcb and its schematic kicad/frontPanel/frontPanel.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Terminal design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).