https://github.com/bkw777/model_t_ram
8K RAM module for "Model T Computers" - TRS-80 Model 100, Kyotronic KC-85, NEC PC-8201, Olivetti M10
https://github.com/bkw777/model_t_ram
100 kc-85 kyotronic m-10 m10 memory model nec olivetti pc-8201 pc-8201a radio-shack ram tandy trs-80
Last synced: 6 months ago
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8K RAM module for "Model T Computers" - TRS-80 Model 100, Kyotronic KC-85, NEC PC-8201, Olivetti M10
- Host: GitHub
- URL: https://github.com/bkw777/model_t_ram
- Owner: bkw777
- License: other
- Created: 2021-04-13T06:43:32.000Z (over 4 years ago)
- Default Branch: main
- Last Pushed: 2023-08-07T04:02:49.000Z (about 2 years ago)
- Last Synced: 2025-02-04T10:51:15.858Z (8 months ago)
- Topics: 100, kc-85, kyotronic, m-10, m10, memory, model, nec, olivetti, pc-8201, pc-8201a, radio-shack, ram, tandy, trs-80
- Homepage:
- Size: 9.66 MB
- Stars: 14
- Watchers: 6
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Model_T_RAM
8K RAM module for "Model T Computers"
* TRS-80 Model 100
* Kyotronic KC-85
* NEC PC-8201
* Olivetti M10
Gerbers available in [releases](../../releases/latest).
[PCB from OSHPark](https://oshpark.com/shared_projects/dh91gDhY)
[PCB from PCBWAY](https://www.pcbway.com/project/shareproject/Model_T_RAM.html)
[BOM from DigiKey](https://www.digikey.com/short/vbnv3rnf)
[How to do the legs](https://gist.github.com/bkw777/52d85d89eeff8445cc667685d05ea94d)
The DIP row spacing is actually 725 mils not 700. It makes it annoying to solder because the rows don't line up exactly with the rows in a breadboard, but it's not an error.
Using a set of single row socket headers in the breadboard, or even two stacked, allows the socket headers to spread a little and make it easier to hold the pins and pcb for soldering, and the finished soldered pins aren't pinched inwards too badly.
----
Thanks to Steve Adolph for advice about RAM_RST