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-
- Idle Led v2.0
- -------------
- by Lindsay Meek
- (meek@fizzy.csu.murdoch.edu.au)
-
- Description
- -----------
- Idle_LED turns the power led into a CPU load indicator. When
- the CPU is busy, the light will turn on. When it returns to an idle state,
- the light will turn off. Some people may find this useful as it provides
- an instantaneous indication of the loading on the machine, as opposed to
- GUI based displays which provide updates at slower intervals.
-
- Installation
- ------------
- 1. Copy 'idle_led' to the C: directory
- 2. Modify the startup-sequence to include 'run idle_led2'
-
- Command Line Options
- --------------------
- The following options have been added to the command line for v2.0
-
- ON Turns on the idle_led (default)
- OFF Turns off the idle_led if running
- BRIGHT Makes the power led bright when the CPU is busy
- DIM Makes the power led dim when the CPU is busy (less audio problems)
-
- THRESHOLD n Changes the CPU load threshold for changing the light state.
- n is an integer from 1.99 representing the percentage of
- CPU time the idle state is equivalent to. This is taken
- over a 20 ms period (VBLANK). For example, THRESHOLD 40
- will make the busy state occur when there is less than 40%
- free CPU cycles in a 20 ms period.
-
- Enhancements from v1.0
- ----------------------
- -This version now uses a VBLANK interrupt server as a load sampler
- rather than Timer-A on the CIAB resource. This should make it much more
- compatible with other low-level software, such as OS-almost-friendly games.
- -It also takes more realistic measurements of CPU load to determine
- when to change the state of the light. The current configuration is
- > 50 % load over a period of 20 ms.
- -The executable is smaller (3K as apposed to 6K)
-
- Donations
- ---------
- This program is a 'barterware' product. That is, if you consider
- it useful and are feeling generous, send me anything you think i'd find
- useful. My address is:
-
- c/- Dept. of MPS
- Murdoch University 6150
- South Street,
- Perth, Western Australia
-