RE: [N8VEM-S100:7360] Re: 8086 Board now available for shipping

Just wanted to let everybody know I assembled the new V2a 8086 CPU board today and switched over all the chips from the old board.

Worked perfectly the first time I popped it into the box (a rare occurrence!). Have it running with a 30MHZ oscillator (S100 bus Phi=10MHz)

See here for a picture

http://s100computers.com/My%20System%20Pages/8086%20Board/8086%20CPU%20Board.htm

John

BTW one suggestion to hard core users. See if you can stock your old board with chips to use it as a backup in case this board gives trouble in the future. Swapping boards in the S100 bus is one of its great features as it quickly narrows down hardware issues. BTW this is one of the most reliable boards I have used here. Just keeps on going no matter how its abused with bus conflicts etc. during debugging/prototypes.

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Tuesday, July 7, 2015 7:30 AM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:7360] Re: 8086 Board now available for shipping

Boards shipped yesterday (you should have received a tracking number directly from the USPS):

*Rick Bromagem 2 boards
*Fabio Battaglia 3 boards
*Shawn Rickman 1 board
*John Monahan 2 boards
*Matt Turner 2 boards + 17 GAL
*Harold Rothwell 1 board

*Richard Cini 1 board
*Ian May    2 boards + 8088 board
*Tim Acker 1 board
*Todd Goodman 3 boards
*David Rosenberger 1 board

Still need shipping info for:

Andrew Bingham 1 board
Brian Marstella 1 board
Ants Pants         1 board
Antony Burrows     1 board
Robert Greenstreet 1 board
Alan Hightower     1 board + Z80 + 4mbRam

On Friday, July 3, 2015 at 9:18:14 AM UTC-4, Gary Kaufman wrote:

The 8086 V2a boards arrived, and I built up one to makes sure they are working properly.

Thanks again to John for all of the help.

I can easily run the board at 9mhz on my system using a NEC V30.

A few construction notes:

Make sure that U78 is a 74LS244 as John reports on his webpage. I got occasional garbage on the console I/O board with the 74F244 in place.

The silk screen is now correct for the wait states, not reversed as on the earlier boards.

The board now supports several options for the voltage regulator.

The silk screen is hopefully a bit more useful.

Please let me know if you need any GAL's or Z80/ZFDC/8088 or 4mb SRAM boards as they won't add to the shipping and it's easier for me to ship all together.

No money at this time, wait till you get the boards and see the actual postage. I'll enclose paypal info etc with the boards.

I have a few extra boards that I'm holding in case any are lost or damaged in shipping. I'll make them available in a few weeks if none are needed.

Thanks!

- Gary

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