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Register

lorenzonotaro·lncpu·v1/kicad/register/register.kicad_pcb

Register PCB layout, top view — open source board by lorenzonotaro
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About the Register PCB

Register is an open source PCB design by lorenzonotaro, published on GitHub. It is a 2-layer board measuring 67.5 × 70.6 mm, with 10 components from 8 distinct parts.

Other key parts include the 74HCT173, 74HCT541 and LNCPU Type B Connector. By type, the board carries 5 capacitors, 4 ICs and 1 connector.

From the project

v1 is the current implementation of the lncpu.

v1 is the current implementation of the lncpu.

The clock cycle is divided in two phases: Φ1 (control phase) and Φ2 (data phase).

During Φ1, the data bus contains the contents of [CS:PC]: only the device mapped to the memory section containing address CS:PC` is allowed to write to the data bus, regardless of control signals.

* During Φ2, bus control is determined by the control signals of the current microinstruction.

Register, from the project README
From the project README

Main components on the Register

74HCT17374HCT541LNCPU Type B Connector

Register bill of materials (BOM)

10 components, 8 distinct parts.

QtyPartRefs
2
74HCT173
U1, U2
1
74HCT541
U3
1
LNCPU Type B Connector
U5
1
ASYNC_{out}
J3
2
100n
C1, C2
1
220n
C3
1
47uF
C4
1
1uF
C5

Register design files

The KiCad project lives in the lorenzonotaro/lncpu repository on GitHub; these links point at the commit this page was built from.

Register: common questions

How big is the Register PCB?

The Register measures 67.5 × 70.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Register?

10 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Register design files?

From the lorenzonotaro/lncpu repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Register design in my own project?

The repository has no license, so all rights stay with lorenzonotaro. Use it as a reference, and ask the author before reusing the design.

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