Re: C64 French version (narrow board)

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Mon, 22 Aug 2022 12:56:07 +0200 Message-ID: <1a9c4511-eadc-2c72-ba90-b9c3642fdbd8_at_laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 8/22/22 12:05, Oliver Fleischmann wrote:
> Hi there,
> 
> R2 feeds some current from +9V to the +5V rail. This won't change the 
> voltage as long as the consumption on +5V is always higher than the 
> current through R2 (200 mA or a bit more as +9V is usually a bit higher 
> than nominal 9V AFAIR).
> 
> Probably the consumption on +5V is too high for the regulator on that 
> rail so Commodore tried to mitigate that problem.

They used the same trick in the C16/C116.

  Gerrit