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WP-2 IC-Card ROM

bkw777·WP-2_IC-Card·PCB/WP-2_IC-Card_ROM.kicad_pcb

WP-2 IC-Card ROM PCB layout, top view — open source board by bkw777
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About the WP-2 IC-Card ROM PCB

WP-2 IC-Card ROM is an open source PCB design by bkw777, published on GitHub under the Custom license license. It is a 2-layer board measuring 54 × 54 mm, with 6 components from 6 distinct parts.

Other key parts include the SST39SF040-70-4C-TU. By type, the board carries 2 switches, 1 IC, 1 connector, 1 capacitor and 1 resistor.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

IC Cards for TANDY WP-2

The TANDY WP-2 and other clones of the Citizen CBM-10WP have an expansion slot that accepts "IC Cards".

Here are a few different cards to fit that slot.

A battery-backed SRAM card like the original cards A non-volatile MRAM card, a RAM card that doesn't need a battery A ROM card, there is new software that runs from a rom card but no known images of any old original rom cards A programming adapter that can read and write both the RAM and ROM cards outside of the WP-2 * A bus-tap/breakout card to allow connecting the bus to a breadboard or logic analyser etc

WP-2 IC-Card ROM, from the project README
From the project README

Main components on the WP-2 IC-Card ROM

SST39SF040-70-4C-TU

WP-2 IC-Card ROM bill of materials (BOM)

6 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SST39SF040-70-4C-TU
29F0x0
U1
1
SMS-138-01-S-S
J1
1
CUS-13TB
CUS-13B
SW1
1
CUS-12TB
CUS-12B
SW2
1
CL21A105KBCLNNC
1u
C1
1
RC0805FR-07100KL
100k
R1

WP-2 IC-Card ROM design files

The KiCad project lives in the bkw777/WP-2_IC-Card repository on GitHub; these links point at the commit this page was built from.

WP-2 IC-Card ROM: common questions

How big is the WP-2 IC-Card ROM PCB?

The WP-2 IC-Card ROM measures 54 × 54 mm, has 2 copper layers and is 1.2 mm thick.

How many components are on the WP-2 IC-Card ROM?

6 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the WP-2 IC-Card ROM design files?

From the bkw777/WP-2_IC-Card repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the WP-2 IC-Card ROM design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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