TT Rom access speedup

Various tweaks and fixes from video ghosting to audio fixes etc.
Atarian Computing
Posts: 328
Joined: Tue Aug 22, 2017 4:27 am

Re: TT Rom access speedup

Post by Atarian Computing » Mon Mar 11, 2019 6:29 pm

guus.assmann wrote:
Mon Mar 11, 2019 6:26 pm
Hello,

Here's a picture of the 2 diodes on pin 15 and 16.
The grey wire goes to the Eprom-CS at pin 22.
That's all there is to it.

BR/
Guus
Exactly how I did mine :)

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Icky
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Re: TT Rom access speedup

Post by Icky » Mon Mar 11, 2019 7:00 pm

guus.assmann wrote:
Mon Mar 11, 2019 6:26 pm
Hello,

Here's a picture of the 2 diodes on pin 15 and 16.
The grey wire goes to the Eprom-CS at pin 22.
That's all there is to it.

BR/
Guus
H guss. You seem to have a large 2200uF cap piggy backing one of the original caps. Is this one of your mods?

guus.assmann
Posts: 70
Joined: Sat Sep 23, 2017 8:52 pm
Location: Ede Netherlands

Re: TT Rom access speedup

Post by guus.assmann » Mon Mar 11, 2019 7:12 pm

No, I've not mounted that capacitor.
But it doesn't hurt.

BTW: It's possible to mount a switch in series with the grey cable.
This makes it possible to have the standard speed.
May be needed in some cases, altough I've not encountered that yet.

BR/
Guus

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