*** M E M O R U M ***

All sounds good.

Hopefully I'll get one before Cyber Legends (https://www.eventbrite.co.uk/e/cyber-le ... 1267680627) in Hythe, Southampton on the 24th September so I can take it along. If not they'll just have to make do with the CFX.

Hi Steve,

that shouldn't be a problem, I'll be in touch soon

- lucky "winner" number 2 has been contacted now too

regards
Dave

I have received "the call".

Now I just have to decide which of my three machines receives the upgrade! First world problems, eh?

Quick question, what's the best way to detect the NFX programatically?

Read than the serial number or look for some output on some of the new ports? What's a safe way of detecting it (safe as in, "don't cause memory corruption or instability on a non-NFX equipped system").

The MFX has arrived safely.


SOOOO much tape and bubble wrap.

Installed and it works. The only issue that the NMOS CPU doesn't reset reliably.

P.S. I was just misunderstanding how reset works on the MFX. It's all fine!

Now a picture in CP/M 80 column mode. Very nice:

gunrock wrote: ↑01 Sep 2022 12:04 Quick question, what's the best way to detect the NFX programatically?

Read than the serial number or look for some output on some of the new ports? What's a safe way of detecting it (safe as in, "don't cause memory corruption or instability on a non-NFX equipped system").

The network interface in on port 144 upwards (#90+) so INP(144) not being 120 identifies the network part is fitted.

The FPGA video controller is on port 58 (#3A) so again INP(58) not being 120 identifies the FPGA.

NB You can "tweak" the video settings from basic, OUT 58,217 will select retro mode without a reset, OUT 58,241 set the defaut 40 column view.

It's all very impressive so far:

Bug report: USER RUN doesn't seem to want to work, returning to BASIC with "undefined". Actually, 'USER DIR "*.RUN"' gives "No file" for some reason but any other extension works fine.

With respect to the prototype end plate, it works well, though I had to drill the screw holes out to 3.5mm, matching the original, so as to give enough "wriggle room" for all three screws to line up. It's a bit fiddly getting it on but it's good once it's there.

I assume that you are using SDX BASIC mode with the default drive? i.e., you have not previously done a USER DRIVE change?

In that case, you’ll be looking at drive B. (The file names are case sensitive)

What does a CP/M DIR on drive B show? Any .RUN files?

CP/M says booting from B: and A: mapped to B:

There are lots of .RUN files, including NEMO.RUN, which is what I tried to run.