CPU Temperature Measering on a bare 6510

Here are some Routines, which measure the Temperature on your C64, without any additional Hardware.
Last Update: 12.01.2002 20:00
Please contact me, if you notice any Errors on this Page
  1. digitherm
    This Programs displays the assumed Temperature with BIG digits
  2. hires-cpu
    The Program draws a Graph. See the Pictures at the bottom.
  3. Varianz.BAS
    Calculates some statistical Values about the CPU
  4. GNU-cpu
    Logs Data about the CPU into a File
    If you know, what to do (or wait till the next Release), you can produce Pictures like the one below on your PC.
  5. Assembler and thermo.src, cputemp.src
    Some Examples on how to read the CPU via Machinecode
  6. Thermo.BAS
    Basic-Example on how to read the Temperature of the CPU
Download:
All Programs can be found on this zipped D64 File.

Please note that the Author of this Page has not fully understand the Behaviour of the unsused Bits @ $01.
Screenshots from Hires-CPU

Right after a ca. 30 Minutes cooldown, my "Green-LED" C64 showed this Behaviour.


Warming up


Reaching Operating-Temperature

Please note that all Programs are in early Developer-Statuts, so don't expect any usefulness from them!
While waiting for an Emulator which works with lm-sensors..