Search found 8 matches

by Witchy
Thu May 29, 2025 8:53 am
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

Re: CST Thor RAM test

Interesting, I didn't know about res_128. I wonder if this will allow ICE to work since I know it works on the bare QL board. Thanks to my illness I've not been able to do half the things I wanted to this week so I'll see if I can try that today.

See you on Saturday :D
by Witchy
Tue May 27, 2025 4:46 pm
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

Re: CST Thor RAM test

Oh wow, I was going to do exactly that! I didn't think that anyone else might've done it already so didn't ask. A mate is going to send me one of his spare boards to scan and feed into KiCAD's new trace copying feature. This was before I realised that the tech manual already has the trace layout in ...
by Witchy
Mon May 26, 2025 4:18 pm
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

Re: CST Thor RAM test

Interlogic INTROM1 FTW. I'd forgotten I had that. WSTAT is so close to what I need, unless it's telling me that there's 0 bytes free in RAM1_ because it can't access it which is entirely possible. Anything that involves RAM over 128K seems to have an issue.

I have another QL kicking around. The ...
by Witchy
Mon May 26, 2025 2:59 pm
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

Re: CST Thor RAM test

Ah I didn't know that. Sure I read the docs for TKII but obviously didn't. I'll have a look, cheers!

Having got into the machine I can see that the chips are D41257C 256x1 which makes sense given that there's 512k on the board. I don't have a tester or even spares for those; my Retro Chip Tester ...
by Witchy
Sat May 24, 2025 9:11 pm
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

Re: CST Thor RAM test

Hi Derek,

I've read about the Minerva RAM test but not to the degree of it having an issue with the Thor board. However, with the QL board extracted and powered with 5V from the edge connector it seems fine. Last night with the machine fully assembled I was trying to copy things into RAM1_ which ...
by Witchy
Fri May 23, 2025 2:56 pm
Forum: Compatibles Corner
Topic: CST Thor RAM test
Replies: 9
Views: 580

CST Thor RAM test

Hi folks,

I sent a message to the old forum a couple of weeks ago and it disappeared. Chatting to Simon Goodwin recently and he told me about this new location which explains why my message vanished.

I've been setting my Thor 8 up for showing off at RetroFest at the end of the month (31/05-01/06 ...
by Witchy
Sun Mar 31, 2019 7:49 pm
Forum: Hardware
Topic: CST Thor 1 EPROM problem
Replies: 28
Views: 17767

Re: CST Thor 1 EPROM problem

Yes! That makes sense about the model number. Mine and Liam's are 8, yours is 16. Excellent :D
by Witchy
Fri Mar 29, 2019 9:16 pm
Forum: Hardware
Topic: CST Thor 1 EPROM problem
Replies: 28
Views: 17767

Re: CST Thor 1 EPROM problem

Evening all,

I feel like I should've joined the forum years ago since I've been on the mailing list forever, still, better late than never!

Liam, you'll like this:

cstThorNewSerial.jpg

With this new serial number my Thor booted happily into the only demo floppy I have, so the format of the ...