• Please review our updated Terms and Rules here

KAYPRO and KayFreHD as a hard disk module

jaquinn said:
Would it be easier just to use the Z80 L shaped adaptor with this machine?
Click to expand...

Yes, this is a good question as I have an original Kaypro 2 (2/83) system also, I would be handy to use the same adapter for both.

Back to the subject of my un-populated 21/84 board, is this common? In other words, do most non hard-disk equipped Kaypro's with
"84" boards have J9 (and the associated logic) populated?

My guess is that there is a lot of "stripped" 84 type boards like mine out there.

Rick
 
Last edited:
AFAIK, that is a "universal" board and is found in a number of different models. I may have to make the same changes to my 4/84.

g.
 
The EPROM expander boards are arrived.
Who wants are bare PCB, please send a PM.
The price for the bare PCB is 9$. Shipping is depending on receivers location.
Frank
image0002.jpg image0001.jpg
 
Philip Avery was generous enough to allow me to test my FreHD Kaypro adaptor with his Kaypro II and I can confirm that with two small modifications the adaptor for the 81-240-n motherboard (4/83 and some II) will also work with a 81-110-n motherboard (earlier II) that was in Philip's machine.

I will add an new blog post with the details in the next couple of days and provide updated design files for anyone who wants to build one.
 
I know it's been a while, but are the adapter boards for the Kaypro 10 and Universal Board equipped Kaypros available yet? If not, could I get the gerbers so I can have some made?

tnx.

g.
 
Hi Geneb,
i only let produce 3 protype boards.
One of them is gone, two are installed in my Kaypro's.
My layout i did in Target V13, don't know if there is a Gerber export function.
Perhaps Jaq has some spare board over.

Frank
 
Rats. If it was the free version of the tool, you're locked into a single PCB house. :(

Is the schematic you posted still accurate? If so, I'll craft up something.

tnx.

g.
 
I've re-drawn the schematic in Eagle:
http://www.geneb.org/frehd-kaypro-adapter.png

If someone would be so kind as to check my work - verify what I've drawn matches the schematic that Frank posted in message #7, I'll upload the Eagle & gerber files for people to download and I'll get some ordered from Osh Park.

Thanks for your hard work Frank!

g.
 
I have a Kaypro 4'84 that appears to have all the chips in place, just missing J9 (50pin)... the board is labeled 23/84
i would be interested in a KayFreHD if another run was done. :) I am in the process of installing a TurboRom as I too could not do the movcpm thing properly, and do not have access to a PC with 5 1/4" drivers... i did manage to find a link to an image for a pre-configured bootable Kayplus disk, but I cannot do much with it....

so I decided to burn a turbo rom and go through the documentation and see how i make out :) but a hard drive for this very cool "portable" would be awesome :)
 
Gene, has anyone built a successful unit from that OshPark PCB yet?
Definitely interested...
Hard to keep these MFM drives going, even with a stash of a dozen or so!!
 
Sharkonwheels: Mike will be the first victim. :)

jaquinn: The board is based on the design Ian did for Universal Board equipped Kaypro models like the 10 and the 4/84.

Have you tested your design with those boards? I'd be curious to see if they work. (probably will)

tnx.

g.
 
geneb said:
jaquinn: The board is based on the design Ian did for Universal Board equipped Kaypro models like the 10 and the 4/84.

Have you tested your design with those boards? I'd be curious to see if they work. (probably will)
g.
Click to expand...

I haven't. Only the Kaypro II and 4/83. Kaypro are a bit hard to come by down here in New Zealand. It seems your other design would be better for the universal board with the expansion connector.
 
You must log in or register to reply here.
Back
Top