Re: Xi 8088 - The improved version of my XT board

[Jim Harre <jha...@gmail.com>]

Hi, Sergey -

Yes, put me down for an Xi and a backplane! Sounds like an interesting project. Those long winter nights are just around the corner.

   <*> Jim

On Monday, September 24, 2012 3:19:05 PM UTC-6, Sergey wrote:
> Hi,
>
> I am working on improving my original XT board (http://www.malinov.com/
> Home/sergeys-projects/sergey-s-xt), and it seems that I am pretty
> close to ordering PCBs.
>
> I'd like to know who will be interested in this PCB (so I can estimate
> how many PCBs to order). The PCB price will be about $30.
>
> Here is the specifications for this board:
> - An IBM XT compatible processor board, with several enhancements: it
> has PS/2 keyboard and mouse interfaces, a second interrupt controller,
> real time clock, and a turbo mode support (I was able to get it up to
> 13.33MHz using V20HL CPU).
> - This board has an ISA card format (11.4" x 4.3" size), and intended
> to be used with a passive ISA backplane.
> - I wrote a BIOS for this board. Additionally to the standard XT BIOS
> functionality, it supports enhanced (AT or PS/2) keyboard, PS/2 mouse,
> and newer floppy disk controllers with diskette formats up to 2.88 MB.
> - This version fixes all known Version 1.0 bugs and has several
> improvements.
>
> The preliminary schematics and PCB layout are posted here:
> http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=Xi%208088
>
> Thanks,
> Sergey