Wire-wrap prototype running

[dourish]

I've been here a few years but still class myself a newbie.

I was moved to post since my wire-wrap prototype came up today, a more solid platform for the machine that's been running on solderless breadboards up until now. 4MHz 65C02, 2x 65C22, bit-banging SPI to an SD card, R6551 and 32K of EEPROM and SRAM. I couldn't have done it without you all, so, many thanks! As you'll see from the photos, this could be much more compact but, first time through, I wanted to give myself plenty of space to work with. Wire-wrapping sure does look cool, though.





Thanks! -- Paul.

Update: there's more information at http://www.dourish.com/projects/mite.html.

[BillO]

Awesome!

Tell us more ... much more ... share!!!

[cyzen]

BillO wrote:

Awesome!
Tell us more ... much more ... share!!!

Agree +1

[dourish]

There is more information online at http://www.dourish.com/projects/mite.html, including links to videos and GitHub repositories.

Not much progress on the hardware since I posted that photo (although I did add a proper power supply); the next milestone will be adding video via TMS9918A (or the Mk2 F18A if it turns up first).

[floobydust]

dourish wrote:

There is more information online at http://www.dourish.com/projects/mite.html, including links to videos and GitHub repositories.

Not much progress on the hardware since I posted that photo (although I did add a proper power supply); the next milestone will be adding video via TMS9918A (or the Mk2 F18A if it turns up first).

Very nice indeed... also looked at your github page, as I keep my latest project there as well. As you use a Mac and Serial as well, I found a bug with Xmodem last year and reported it... and it was finally fixed a couple of releases ago. Looking forward to seeing your video implementation. I also modified EhBasic to be quite a bit smaller and easier to integrate into an existing design along with a fair amount of CMOS opcodes/addressing modes. You may find it interesting to try out, less than 10KBof space and a bit quicker as well.

[dourish]

Great, I'll certainly check out the EhBASIC revision. Thanks!

[speculatrix]

Do you (or anyone else) have a source for reasonably priced wire-wrap chip sockets. All the sources I’ve found so far have been stupidly expensive.

[cbmeeks]

I've had the most success from eBay and Jameco.

I find that Jameco has a pretty good deal on WW rows. Basically, just a row of WW pins that you can break away and create your own sockets.

[speculatrix]

I hadn't though of using female header strips - thanks for the tip.

I'm in France so shipping by Jameco is too expensive, and I sometimes get stung for import duty. Even Ebay prices are quite high (many of the suppliers are in the US). Turns out the cheapest deal is via Mouser, so long as I bundle it with some other stuff to get free shipping...