The Danish Hardware Upgrades and Danish Group ROM

[Womble]

I have the go ahead from Frank to post the Danish upgrade documentation, Frank says he is working on an English translation among many other exciting things.

here are just a few pages to give you an idea what is in this treasure trove...

lynx64kGreenBank.jpg (64.93 KiB) Visto 243 veces

lynx64kGB2.jpg (138.14 KiB) Visto 243 veces

Lynx6MHzupgrade.jpg (101.17 KiB) Visto 243 veces

LynxVideo80ColModsmall.jpg (136.71 KiB) Visto 243 veces

http://www.retrogubbins.co.uk/downloads ... grade-docs

20MB download

[jltursan]

We need urgently to translate these Danish docs (the handwriting also doesn't helps)...

[frankras]

On the way - maybe before Christmas

/Frank

[jltursan]

I've "deciphered" the 6Mhz mod and I'm near to try it. Seems to need only the following steps:

1) Replace original Z80 with a faster version
2) Isolate IC9 - pin 13
3) Wire IC9 - pin 13 with IC19 - pin 6
4) Isolate IC68 - pin 6
5) Wire IC68 - pin 6 with IC19 - pin 5

Note: The drawing doesn't shows any modification, it's the original Lynx clock schema.

The mod is something like this:

6Mhz.jpg (85.98 KiB) Visto 69 veces

Is the above correct?, it has been ever tested?. Although it doesn't looks a harmful modification, I don't want to ultimately risk my Lynx...