WP-2: Difference between revisions
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*128K: 128Kx8 parallel SRAM, 5v, low power, DIP-32 | *128K: 128Kx8 parallel SRAM, 5v, low power, DIP-32 | ||
Many different chips are compatible. Here are just a few for example & reference: | |||
:[https://www.futurlec.com/Memory/628128pr.shtml Hitachi HM628128LP] | :[https://www.futurlec.com/Memory/628128pr.shtml Hitachi HM628128LP] | ||
:[https://www.digikey.com/product-detail/en/AS6C1008-55PCN/1450-1017-ND/ | :(best battery life) Alliance AS6C1008-55PCN [https://www.digikey.com/product-detail/en/AS6C1008-55PCN/1450-1017-ND/ from DigiKey] or [https://www.mouser.com/ProductDetail/Alliance-Memory/AS6C1008-55PCN from Mouser] | ||
:[https://ebay.com/sch/i.html?_nkw=IS62C1024LL-70W ICSI IS62C1024LL-70W] also LL or L, 70 or 55 | :[https://ebay.com/sch/i.html?_nkw=IS62C1024LL-70W ICSI IS62C1024LL-70W] also LL or L, 70 or 55 | ||
:[https://ebay.com/sch/i.html?_nkw=BS62LV1024PC-70 BSI BS62LV1024PC-70] also 1025 or 1027 or 1028, PC or PI, 70 or 55 | :[https://ebay.com/sch/i.html?_nkw=BS62LV1024PC-70 BSI BS62LV1024PC-70] also 1025 or 1027 or 1028, PC or PI, 70 or 55 | ||
:Toshiba TC551001CP-70L | |||
:AMIC LP621024D-70LL | |||
:Goldstar GM76C8128 | |||
:Samsung KM681000BLP-7L | |||
:ASI MT5C1008CW-70L/883C | |||
The following do not come in a DIP package, but for future reference would also work with a simple adapter pcb: | |||
:Cypress CY62128E | :Cypress CY62128E | ||
:ISSI IS62C1024AL / IS65C1024AL | :ISSI IS62C1024AL / IS65C1024AL | ||
Generic ebay search for the type of chip, not a particular part number:<br> | |||
https://ebay.com/sch/i.html?_nkw=128Kx8+sram+dip+32 | |||
==Expansion Card== | ==Expansion Card== | ||
Revision as of 12:32, 18 November 2020
Manuals
https://archive.org/search.php?query=Tandy%20WP-2
RAM Disk
Battery-backed SRAM powered by the wall power when present, the AA batteries when wall power is absent, and the CR2430 coin cell when wall power and AA batteries are absent.
Internal ram upgrade socket can take a single chip, either 32K or 128K.
- 32K: 32Kx8 parallel SRAM, 5v, low power, DIP-28
- 128K: 128Kx8 parallel SRAM, 5v, low power, DIP-32
Many different chips are compatible. Here are just a few for example & reference:
- Hitachi HM628128LP
- (best battery life) Alliance AS6C1008-55PCN from DigiKey or from Mouser
- ICSI IS62C1024LL-70W also LL or L, 70 or 55
- BSI BS62LV1024PC-70 also 1025 or 1027 or 1028, PC or PI, 70 or 55
- Toshiba TC551001CP-70L
- AMIC LP621024D-70LL
- Goldstar GM76C8128
- Samsung KM681000BLP-7L
- ASI MT5C1008CW-70L/883C
The following do not come in a DIP package, but for future reference would also work with a simple adapter pcb:
- Cypress CY62128E
- ISSI IS62C1024AL / IS65C1024AL
Generic ebay search for the type of chip, not a particular part number:
https://ebay.com/sch/i.html?_nkw=128Kx8+sram+dip+32
Expansion Card
Original
DIY
RAM Card
ROM Card
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
Binary Apps
See the Service Manual pages 4-16 and D-1.
CamelForth FORTH Interpreter
ZXZVM Infocom Z-Machine Interpreter