Model 100 RAM
Buy
Francesco Messineo
GGLABS M10MEM (Not recommended. Power drain while on standby.)
Build
[1]
Francesco Messineo
Stardust SMT
Stardust DIP
GGLABS M10MEM
Test
Hardware tester using arduino https://youtu.be/5fFRrfUjogs
BASIC software tester https://archive.org/download/M100SIG/M100SIG.zip/Lib-07-UTILITIES%2FRAMTST
Past
There have been many 3rd party ram modules over the years. Here are just a few examples.
| NEC |  |
| Purple Computing 1983 |  |
| Purple Computing 1985 |  |
Other
There are also ram expansion accessories that connect to the system bus and either add extra banks of 32k to the internal ram, or replace the internal ram. These aren't normal ram modules that plug into the normal ram sockets. They plug in to the system bus cnnector and provide the entire 32K address space at once from there, as if all ram sockets were filled.