Kiwi - a 68k Homebrew Computer

Where did you buy your parts? Maybe the source could be interesting for us? One more question on your video hardware. Do I really need to have the LM1881 if I only need to have the V9958/V9990 output composite signals (from the RGB encoder) into the TV? No, just feed the CSYNC coming from the VDP di...

Isn't there an open source version of CP/M at http://www.gaby.de/ehome.htm? This week I didn't make much progress. I had to use a hand scroll-saw. I did two cuts which were not very accurate. So I had to think about a better guidance for the scroll-saw. Yesterday I cut a piece of wood for a new guid...

A little more study...There is an OSC of 14.318Mhz connected to the MCKIN pin of the V9990. Is that for the PAL color burst? No, the two clock inputs for the V9990 are for generating the screen modes. The device doesn't know about color bursts. It just takes care about correct H-sync and V-sync and...

On the DRAM part, the V9958 data sheet says the below in order. I take this means that the V9958 can have up to 12KB of DRAMs attached to it? Because the V9958 is able to display 512x424 resolution with 16 colors per pixel. This means the memory requirement for the video is at least ((512 * 424 * 4...

Hi Unebonnevie, welcome! :) Hi, What an incredible project Kiwi is! I happen to find it when I was googling about the Yamaha V9958, which I bought a couple pieces from eBay last night. Btw, the I got five pieces of CXA2075M for $10 (USD) shipping included. That was awesome! I am looking to do a VERY...

Thank you! I am trying to do my best. :) The next parts are a bit more tricky as I have to take care about the angles. Espescially the part for the keyboard. About GEM... I wonder if it would make sense to port CP/M 68k at first. As I understand GEM is only an addon eather for CP/M, DOS or Ataris TO...

Here are another two photos. The side parts are almost finished. The big opening is for an 3.5" disk drive. Well, I did not glue it yet but you get an impression.

Simon

And another two photos after sawing but before honeing down.

Simon

Hi, I have been a bit more busy. Thus the case had to wait. Well today I have a holiday and have time to tinker. I drilled the holes for the connectors at the backside. Of course one of the holes did not work out very well. :roll: Here are the pictures though. Simon DSC08164.jpg DSC08168.jpg DSC0817...

Hey Michael,

I got the mail, thanks. See you in a few days. Have a nice trip and enjoy your days off!

Hopefully I can finish the case in the next week.

Simon