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Woops, I see that 86h is valid as well now. :). Thanks for confirming what I thought about 0Eh! -Frank [email protected]> wrote:

Hi Frank, Yes, partition type 0x0E does work and indeed the firmware should be updated to include this partition type.At the time, only types 4, 6 and 0x86 where identified as valid FAT16.??If you

Hi, This is an idea for a small change to the Z80MC firmware. I did it on mine a while ago and it helped me at the time. I had formatted my SDCARD from windows, and had a hard time booting off of it.

Thanks for your suggestions, Kerem. 1. I am resolving the S8 problem by changing Q3 from an FJN3305 (internal 4.7k) to an FJN3304 (internal 47k). If anyone wants an FNJ3304, email me and I can send

testing z80s.... Unplug the built in one and plug in the one in question if it boots and does all the usual stuff its a good Z80. Over the years the only Z80s I've seen that were bad were either

Hi Lee, I am loving the Z80MC (thank you!), although so much to learn that is fine. Here are some suggestions for consideration (without altering the original art) : 1- Going back to 15K from 18K to

Yes, those days are now really old...? ;) I have a assortment of machines all speaking either CP/M or NS*DOS. NS*DOS was a strange animal as it was basically bag and tag and tightly bound to their

Allison, Ah yes, the "good" old days. :-) My first disk system was a Heath H89 with a single H17 floppy. 40-track, hard-sectored, single-sided, single density, which stored 92k with CP/M. Operating

Remap... Lets say drive B is a 8mb container file on some disk. Elsewhere there are 124 more of them (1GB media). My box can make any of those 124 others appear as drive B: same for C: and D:. Mount

Lee, My first system with disk was Altair box NS* disk and 48K ram and that was 1977.? FYI the NS disk was Sa400 35 tracks, 10 hard sectors and the boot disk has about 81K of usable space. Since the

I don't understand "remap"?

Josh, You still? need a ap on your PC to read the CP/M directory in the container file. so going direct is one step less.? If the one available works great. Fat with the container file fragmented

Hi, Using FAT16 as the underlaying model isn't as wasteful as you might think. When booting up, the BIOS looks at the main boot partition (Sector 0) to see where the FAT16 Partition starts.This

I'm out of Z80MC CPU and Front Panel cards, and need to order more. Do you have any suggestions for changes or improvements? Hacky Lee -- Excellence does not require perfection. -- Henry James But it

makes sense since you'd probably otherwise need a special app on the PC side to read/write into the raw block store.

no urgency on any of that, of course; I happen to enjoy reading code. yes, coincidentally I've seen your posts on QRPLabs; lol.

Josh Bensadon originally wrote the Z80MC's CP/M code for his JAIR board. It's a single-board S-100 computer with an 8080 CPU, 64k RAM, boot ROM, 2 serial, 3 parallel ports, and a parallel interface to

Dave, Code for direct sector access is currently only for CF (and IDE).? Since only two of my machines are uSD I haven't gotten to it but the basic skeleton would based off the CF versions with the

Generally its better. Since the SPI interface is bit banged having to shuffle less means less time doing bit bang to move stuff.? Think in terms of layers. Code may be smaller as well, less code

That's super interesting. ?I wonder what the numbers are on the Z80MC for the elimination of the FAT layer relative to direct block I/O. ?I would guess that a majority of the time is spent in the