Hey Atarian would it be possible for you to post a simplified guide with some mobo photos to help? Thx
Also is it possible for me to find out what speed my thunderstorm roms are? I can't program roms so it might be problematic for me.
TT Rom access speedup
-
- Posts: 444
- Joined: Tue Aug 22, 2017 4:27 am
Re: TT Rom access speedup
Sure, I can make a guide. I just need to finalize my custom ROMs and install them before I can do that.
You'd have to scrape away the sticker to reveal the chip details from one of the chips. No other way around it I'm afraid. But there are many variables involved so I wouldn't discount 150ns ROMs even though they didn't work for me.
-
- Posts: 94
- Joined: Sat Sep 23, 2017 8:52 pm
- Location: Ede Netherlands
TT Rom access speedup
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
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
- Attachments
-
- TT_Rompatch.jpg (223.06 KiB) Viewed 5561 times
-
- Posts: 444
- Joined: Tue Aug 22, 2017 4:27 am
Re: TT Rom access speedup
Exactly how I did mineguus.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
Re: TT Rom access speedup
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 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
-
- Posts: 94
- Joined: Sat Sep 23, 2017 8:52 pm
- Location: Ede Netherlands
Re: TT Rom access speedup
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
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