General Category > Building LOS From Source
I've successfully built LOS from source!
andrew:
Forgive me if it was mentioned, but aside from using video capture instead of the CRT, did you have to take any extra measures to keep the Lisa(s) cool while you were transferring files and compiling code for hours on end? Or was it even an issue? I'm honestly afraid to keep my own 2/10 turned on for too long.
--- Quote from: AlexTheCat123 on July 01, 2025, 06:23:07 pm --- it's a really impressive project!
--- End quote ---
Thanks! :)
AlexTheCat123:
--- Quote from: andrew on July 01, 2025, 10:42:14 pm ---Forgive me if it was mentioned, but aside from using video capture instead of the CRT, did you have to take any extra measures to keep the Lisa(s) cool while you were transferring files and compiling code for hours on end? Or was it even an issue? I'm honestly afraid to keep my own 2/10 turned on for too long.
--- End quote ---
Since I didn't need the CRT, I was using the card cage outside of the Lisa chassis, with the motherboard edge connectors hooked to a breakout board that allows me to connect power, floppy, video through the RGBtoHDMI, and so on. And having the card cage open to the air like that instead of being constrained inside the Lisa already helps with cooling a great deal. Nothing felt like it was getting too hot (and I only had 2 hardware failures throughout the whole process, neither of which was related to overheating or to this project), so I just left it alone!
sigma7:
--- Quote from: andrew on July 01, 2025, 10:42:14 pm ---did you have to take any extra measures to keep the Lisa(s) cool
--- End quote ---
This is a really good point for this topic... building LOS is going to be stressful!
I suggest a fan drawing air through the power supply is the most critical thing for extended use.
Next would be turning down the brightness to minimize burn-in, and not use a vintage spinning disk (eg. disconnect your 2/10's widget if still installed and use an emulator).
Beyond that, you could remove or elevate the rear of the top cover for better cooling of the flyback and video board, and add a card-cage fan similar to the XLFan intended for the faster XLerators.
Since the Lisa was designed for convection (fanless) cooling, it doesn't take much additional airflow to make a substantial difference. Quiet fans are sufficient.
AlexTheCat123:
--- Quote from: sigma7 on July 02, 2025, 03:27:57 pm ---I suggest a fan drawing air through the power supply is the most critical thing for extended use.
--- End quote ---
I don't think I mentioned this, but I used an ATX power supply as part of my breakout board setup, so I didn't even consider cooling the original Lisa supply. But yeah, that's certainly a really good idea!
--- Quote from: sigma7 on July 02, 2025, 03:27:57 pm ---Next would be turning down the brightness to minimize burn-in, and not use a vintage spinning disk (eg. disconnect your 2/10's widget if still installed and use an emulator).
--- End quote ---
Yeah, you do NOT want to be using a spinning disk for this. For one, the code alone takes up over 20MB, and grows to fill up a 32MB volume after you've compiled everything. And also, you'll want to make frequent backups in case things go wrong and corrupt your OS install or filesystem, which has a decent chance of happening, especially if you're messing around with SYSTEM.OS, the configurable drivers, or the libraries. And backups/restores are much quicker and easier on an emulator (just choose the Copy option in the Selector if you have a Cameo/Aphid, ESProFile, or ArduinoFile) than they are on an actual disk!
andrew:
Has anyone tried any of the Notca fans as a replacement for the built in fan? They are supposed to be very quiet.
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