Here is what i have, It works.
https://easyeda.com/jerryt74332/m919-cache-completed_copy
This was my first attempt at anything with easyeda. so cut me some slack, it works.
This is a very close copy of the original. I would like to make a 512 or 1024 next, but dont know how yet.
You can get your boards ordered from anywhere, or I do have on Ebay. You can search if interested.
Good work. It shouldn't be complicated to make a 1Mb module. It just takes two additional address lines. Needs eight 128Kx8 chips for the cache and one 64Kx8 chip for the tag.
One more thing. I would probably keep using 0805 capacitors instead of 0603. Clock speeds are low enough for this type size. 10uF/6.3V 0805 X5R or Y5V is a good choice and quite inexpensive.
Thanks ! Maybe will dig out my broken m919 and see if it can be fixed, did not boot last time checked.
Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun
the page does not exist anymore, anyone have a schematic or something of this project?
Dang. This is why we need to be uploading to vogons 🤣
Was this the only project around for this?
If nothing comes of it and someone can guide me on layout/routing who is more familiar with details I can probably replicate it in kicad.
On phone, but if those files download, re host them here please. 😀
there are no files, easyeda is a shitty cloud service aka someone else's computer. All you can see are images of a diagram and pcb.
Here are the files jerryt74332 posted. With the info in this topic Lets make new M919 Cache sticks? you could make some.....
The board layout is not correct to his finished schematics iirc....
Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun
