WP-2

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Manuals

https://archive.org/search.php?query=Tandy%20WP-2

RAM

Internal ram upgrade socket can take either a 32K or a 128K chip.

  • 32Kx8 parallel SRAM, 5v, low power, DIP-28
  • 128Kx8 parallel SRAM, 5v, low power, DIP-32
Hitachi HM628128LP
ISSI IS62C1024L
Alliance AS6C1008

Chips that would work with a simple SOIC-DIP or TSOP-DIP adapter pcb:

Cypress CY62128E

If you want to get real crazy, this probably works, although may not fit

https://www.digikey.com/product-detail/en/DS1245AB-85/DS1245AB-85-ND/

Expansion Card

DIY

https://github.com/bkw777/WP-2_IC_Card

References / notes

http://randomvariations.com/wp-content/uploads/2014/09/IMG_8920_wp2_zork1.jpg
Toshiba Memory Card / IC Card
32K, 64K, or 128K RAM card
32K, 64K, 128K, or 256K ROM card

Connector that fits the Expansion port:

Similar to PC-Card/Cardbus/PCMCIA, but thinner with a single row of pins instead of two rows of pins.
38 pins, single row, 1.27mm pitch
Card main body 3.2mm thick x 54mm wide
File:JC20-B38S-F1.pdf
JAE JC20-B38S-F1-A1 0.29mm-0.45mm pcb, centered, https://www.asapaog.com/rfq/japan-aviation-electronics/jc20-b38s-f1-a1/
JAE JC20-B38S-F2-A1 0.5mm pcb, offset
JAE JC20-B38S-F3-A1 0.2mm pcb, offset

Memory Battery

CR2430

Binary Apps

CamelForth FORTH Interpreter
ZXZVM Infocom Z-Machine Interpreter