To the 2901 bit slicers out there

[Rob Doyle]

On 12/27/2017 9:35 PM, Randy Dawson via cctalk wrote:
> Since I know there's tons of PDP/11 geniuses here, and other gurus
> with a NOVA 4, and a Tektronix 4052 guy (I have the 4051):
> 
> 
> What have you done, with microprogramming this part?  In your
> architecture,  have you changed the microcode, create an instruction
> to enhance your machine?
> 
> 
> I would be interested in any hardware projects, stories (or even in
> the FPGA, I hear its a popular thing to copy);
> 
> 
> I read all of Donnamaies pages, and planing to hook up, breadboard
> the eval kit, perhaps reproduce the PCB if you guys are interested.
> 
> 
> What about the coding tools?  ADASM?  Looks long gone, how do you do
> microcode today?
> 
> 
> If I forget the soldering iron, can anyone show me an example on a
> Xilinx board, ISE, Vivado that uses the original AMD 2900
> architecture?
> 
> 
> http://www.donnamaie.com/AMD_Vintage/AMD_2900_ED2900A.html
> 
> Donnamaie E. White - AMD 2900 Family, Bit-Slice; Am2900
> ...<http://www.donnamaie.com/AMD_Vintage/AMD_2900_ED2900A.html> 
> www.donnamaie.com Lecture Monograph updated. The AMD 2900 Family
> (Am2900) Bit-Slice and other devices were supported by a number of
> high-level application notes. (Generated by the AMD ...
> 

The ALU of the DEC KS10 used 10x Am2901s.  An example of that ALU
coded in verilog is at:

https://github.com/KS10FPGA/KS10FPGA/blob/master/fpga/ks10/cpu/alu.v

Rob Doyle