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Circuit Cellar E-Z Color Graphics Interface for Apple II

baldengineer·bit-preserve·Apple/Peripherals/ezcgi/ezcgi.kicad_pcb

Circuit Cellar E-Z Color Graphics Interface for Apple II PCB layout, top view — open source board by baldengineer

About the Circuit Cellar E-Z Color Graphics Interface for Apple II PCB

Circuit Cellar E-Z Color Graphics Interface for Apple II is an open source PCB design by baldengineer, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 127 × 69.9 mm, with 32 components from 13 distinct parts.

Other key parts include the TMS9918A, SN74LS00N and TMS4116. By type, the board carries 14 capacitors, 10 ICs, 3 resistors, 2 jumpers, 1 transistor and 1 crystal.

It belongs with the retro computing designs in this gallery.

From the project

Project for capturing vintage, classic, aka old computer schematics in KiCad.

This is a transcription into KiCad of Steve Ciarcia's E-Z Color Graphics Interface, described in the August 1982 issue of Byte magazine. It's not a line-for-line copy, but takes advantage of KiCad features that wouldn't have been available 40 years ago.

I originally posted this on GitLab, and that's where you can also find gerbers, a STEP model, and other extras, though KiCad 6 should be sufficient to regenerate those from the files presented here. Parts are annotated with manufacturer and part-number fields, and current (as of December 2022) distributor SKUs are provided for all but the…

Main components on the Circuit Cellar E-Z Color Graphics Interface for Apple II

TMS9918ASN74LS00NTMS4116

Circuit Cellar E-Z Color Graphics Interface for Apple II bill of materials (BOM)

32 components, 13 distinct parts.

QtyPartRefs
1
TMS9918A
Texas Instruments
IC1
1
SN74LS00N
74LS00
Texas Instruments
IC2
8
TMS4116
4116
Texas Instruments
IC3, IC4, IC5, IC6, IC7, IC8, IC9, IC10
1
2N3904TAR
2N3904
onsemi
Q1
1
MP107-E
10.7386MHz
CTS-Frequency Controls
X1
1
PRPC002SAAN-RC
Composite Out
Sullins Connector Solutions
J1
2
PRPC002SAAN-RC
Jumper_2_Open
Sullins Connector Solutions
JP1, JP2
8
C315C104M5U5TA
0.1µF
KEMET
C1, C2, C3, C4, C5, C6, C7, C8
3
ECE-A1EKS100
10µF
Panasonic Electronic Components
C9, C10, C14
1
GKG50015
5-50pF
EW Electronics
C11
2
K330J15C0GF5TL2
33pF
Vishay Beyschlag/Draloric/BC Components
C12, C13
1
CF14JT10K0
10kΩ
Stackpole Electronics Inc
R1
2
CF14JT33R0
33Ω
Stackpole Electronics Inc
R2, R3

Circuit Cellar E-Z Color Graphics Interface for Apple II design files

The KiCad project lives in the baldengineer/bit-preserve repository on GitHub; these links point at the commit this page was built from.

Circuit Cellar E-Z Color Graphics Interface for Apple II: common questions

How big is the Circuit Cellar E-Z Color Graphics Interface for Apple II PCB?

The Circuit Cellar E-Z Color Graphics Interface for Apple II measures 127 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Circuit Cellar E-Z Color Graphics Interface for Apple II?

32 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Circuit Cellar E-Z Color Graphics Interface for Apple II design files?

From the baldengineer/bit-preserve repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Circuit Cellar E-Z Color Graphics Interface for Apple II design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which baldengineer chose for the repository.

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