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

What I have is Z8S18033VSC.

The way I read the datasheet I have:

• Z8S180 is for 5v parts
• Z8L180 is for 3.3v parts.

It also suggests that Z8L parts are only available up to 20MHz (the higher speed needs a higher voltage).

Attached is a planned circuit diagram. The Z180 has a 1MB external address space which is mapped onto the 64KB address space of the Z80 core in three areas, which the Zilog documentation designates as (from low internal address to high): Common Area 0 Bank Area Common Area 1 The boundaries between t...

Having taken advantage of Lez Anderson's extremely generous offer of free chips for a second time, I thought I should nail my colours to the mast and publicly commit to doing something with them. What attracted me to the latest offer from Lez was the inclusion of Z180 CPUs. The idea of building a fa...

Dave, Standard Unix / Linux / Fuzix / Raspbian :) Unlike Windows, the current directory is not (generally) in the path. Therefore if you want to run a file in the current directory you have to specify "./filename" not just "filename. That is a "dot" (for current directory), ...

Thanks Andy.

I don't do Facebook so unable to vote. I will try and come whatever date selected, although in general later in October is better for me.

No surprises from me this year. All my Memotech time has gone on software, which Dave has already published.

Alan, a request from Dave. As you know, the MTX keyboard matrix potentially supports 80 keys, only 77 of which are implemented in hardware. The three unused locations are used by the PC keyboard interface , MTX+ and my version of MEMU to implement virtual keys with characters having the same shift s...

Rather off-topic for this thread, but to finish up the discussion of the memu-cfg issue, the causes were: A mis-understanding on my part :? I thought that there was only one UI thread, whereas there is actually one per window. I also hadn't appreciated the consequences of the keypress () and keyrele...

Yes, the bug is in the VDP code, but not related to Fuzex. It happens even when emulating an MTX 512. The symptoms: Start memu-cfg. Tap the "Menu" key to open the configuration window. Select "Exit" from the bottom line of the window. The configuration window closes. What should ...

Dave, Some changes to MEMU: Mods to allow mounting Alan's image as an image of the whole card rather than just one CP/M partition. As reported, fixes to the emulation of the CF Identify command. I was just merging together these changes (done on Linux) with the Windows version to send to you, when I...

Stupidity in emulation of Identify command found

CFX Fuzix now running on MEMU