Great news Bill!
These boards have been run at quite high speed, depending upon the
80C188 that you have installed. 16Mhz seems to be the upper limit
with an external 4MEM board; but standalone, several of us have been
successful running up to 25Mhz with the AMD 25Mhz CPU.
I think I've come to the conclusion that in building these retro
computers the goal is to see that "I can solder it together and get
it to work." It is greatly satisfying when the board comes up.
--John
On 09/05/2012 07:03 AM, Bill Lewis wrote:
Same here.
After a long delay due to family issues, work, other projects,
etc. I have finally powered up my SBC-188 also. Booting MS-DOS
6.22 with one floppy. Running at 8MHz currently due to in-stock
OSC can selection.
Bill
On Saturday, June 23, 2012 12:25:54 AM UTC-4, vk5dg wrote:
Hello
All,
After much procrastination I have finished building my SBC-188
v1 board. While there are a few
more issues to clear up (the supercap is not all that super
anymore etc.) I have managed to boot
MS-DOS 6.22 with one floppy. Running bios v039. Don't know if
I'll be spending more time on
it in the near future. Anyhow I have added a photo of the
completed board to the SBC-188 V1
folder as there wasn't already one there.
Regards
David
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