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As far as I've been able to work out, yes, the OS does use the input line on the screen during some part of the command processing. The manual says there is a keyboard buffer at #FB4B i'm not sure though at what stage that gets filled. If the CPU ram misbehaves, then you'll likely just have a non st...

There's a write up of VRAM test and repair here http://primrosebank.net/computers/mtx/repairs/vram/mtx_vram_repair.htm The reverse quote has an ASCII code in hex of #60. a space has a code of #20. That #40 difference suggests that there is a rogue bit appearing on D6. At the time TI designed the VDP...

It's the 10th anniversary of that first Memofest at Jim’s in 2013…

It would certainly be a good comparison FDX vs MFX. 1980s vs 2010s.

OK the Cyclone FPGA we used is a bit earlier than 2010, but the net chip is a closer to 2020.

Mmm, another observation on my packing technique - I may need to revisit it :o Well, the good point is that apart from my knife blade, nothing was damaged :D And to be fair, the blade was already well worn… Although putting the label on the bottom of the box, which I did not realise until after I c...

1024MAK wrote: ↑26 Aug 2023 01:07 That’s (hopefully) good, as my finger is not quite long enough to get to Dave’s (new) location to poke him…

Mark

You might not need to poke him now, a little bird tells me the MFX has been finished and shipped.

Are you one of the lucky 3 ??? To help Dave out, I've just assembled 3 MFX boards, they're on their way back "up north" for chips and such to be added.

If you're not one of the 3, and might want one, poke Dave

On his MFX development pages, Dave mentions that I already had the FPGA board used in the MFX, which was originally running Grant Searle's Multicomp. http://searle.wales/ With the "production" MFX running using it's own FPGA for some time now, I finally got around to re-configuring origina...

They say a picture is worth 1000 words, so ...
The indexed value stored at LABEL 2 was IX+#06.
What came up in the editor was IX+#00.

NB LABEL3 was originally IX+2 that was over written with IX+#00, that's the one originally reported to Jim. I forgot to screen grab that one!

Wiki says .. https://en.wikipedia.org/wiki/MIDI that the Midi data rate is 31.25khz. That's 1MHz divided by 32, or 4MHz divided by 128. On the MTX the serial clock for the DART is generated by the CTC in counter mode. If the CTC were fed with 4MHz then 31250 baud could be done. But it's not the CTC ...