The Sinclair QL Forum

I don't have a different thing.
Is it sure that is wiring correctly?

By the way... beautiful keyboard. I like your idea.
May I suggest some little changes for the connection?

bwinkel67 wrote: Mon Apr 28, 2025 9:25 pm Anyone try this with any of the QL SD options:
...
https://www.youtube.com/watch?v=nHNZPRl8gzA

...

Interesting...
I am working in something similar for the MDP

I think I had the same - They were sold through the German Vobis chain BITD and relatively common. Unfortunately, the thing has long gone and no photos exist.


Such a pity!
Depending on how they were integrated I could modify the code of the RAM Fail Test to also include this kind of updates ...

RENUM can very well be used in a running program - as long as you make sure the line numbers that "currently run" (i.e. the ones that actually call RENUM) don't change. You can achieve this by putting the RENUM code at the beginning of the program with increments you intend to use later. Of course ...

stevepoole wrote: Mon Apr 28, 2025 11:05 am Hi Folks,
Out of hospital, so here comes Butterfly5_bas... to celebrate my 77th birthday and MayDay ! Steve.
Capture d’écran (140).png

Get better!
Very very nice work!
A lot to learn from all of you!

Nice work Andrew!
Thank you very much.

I used to have a similar expansion from MicroPeripherals, but it was 256K (total 384K) so it probably had only 8 RAM chips on board. Also, it didn't require soldering.
It did have the memory contention drawback.


??? what what what??? how interesting!!!
Please, do you have photos or extra ...

I have never heard of it. Internal memory expansion normally had a total of 512 KByte (and you have to send it to a company which fitted the upgrade). Disadvantage: It was slow memory, cause also the video hardware ("processor") accessed it and hat to share time with the CPU.


I have seen two ...

Hi & Welcome!
I am interested about your QL RAM expansion,
please, Could you give me information about it?

Recently I have reprogramed the famous algorithm to detect faulty ICs in QL with similar RAM expansions like yours. So I would like to know if also It would work fine with my modification ...

When it fails...
Could you touch the RAM ICs with your hand and feel any heat in any IC?