There is a mod on the A model which was fixed in the B version.
As I recall, it was to reduce cross-talk. Bruce the almighty might recall better than me.
I would recommend Perry to apply the BBB based CPU-boards. Good use of the hardware at hand.
Cheers, Magnus On 12/19/2014 02:55 PM, Chuck Harris wrote:
There really is no need to convert it to a B unit, as the A unit has the same specifications. If you put John Seamons' BBB CPU card in it, it will simply sing as far as speed goes, and you can use the A or B virtual roms as you wish. The principle difference is the B analog boards are easier to calibrate, and, have a different range of threshold settings on the front panel knobs..
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