O2 system PROM socket adapter

[sdz]

Socket adapter for the O2 system PROM, so that the flash can be easily removed and programmed externally when needed.







Installation instructions:
-remove Dallas socket
-remove flash IC
-solder the two FFCs
-solder Dallas socket back
-install adapter
-install Dallas IC
-connect the two FFCs
-install flash IC

 

[sdz]

Attached SGI_O2_SYSTEM_PROM_SOCKET_ADAPTER_A00_RELEASE.zip archive (will be available at https://sdz-mods.com/index.php/2026/02/13/sgi-o2-system-prom-socket-adapter/ as well).

It contains the following:



1.SCH_BRD - contains editable schematic and board file. Format is Eagle CAD, but they can be imported in other tools, like Kicad.

2.SCH_PDF- schematic in pdf format.

3.P&P - pick and place files

4.BOM

5.GERBER - gerber files

Notes:
-the two FFCs are not identical, pay attention at the photos to see how they need to be installed (both FFCs and the adapter PCBs are marked with L and R)
-header pins that plug into the Dallas socket need to be the machined type, round
-not possible to install R10k/R12k CPU module when the socket adapter is installed (not really an issue as anyone using this will likely use it for RM7**** development).

 

[mattst88]

That's fantastic. If you have an extra, I'll gladly buy it from you.

 

[sdz]

I don't currently have an extra, but I can make one. I'll drop you a message over discord.