On 06/25/2018 04:32 AM, TJoseph Powderly wrote:
re
"The programming software has a mode where yu can call up a library
of old 74LSxxx parts and drop them on a canvas and draw lies between pins
"
You talkin bout Cypress's PSoC Creator, Willis?
;-)
It doesnt sound like Xilinx or Altera's tools.
Xilinx Foundation definitely had schematic entry, and a
massive library of 74xx and generic parts
(FF, gate, mux, etc.). Most of this was still available in
ise, and I have a few tiny CPLD projects that used that.
One was an 8-bit bidirectional buffer with a few gates to
control the buffer, another was an 8-bit shift register and
some 8-input gates. These were really easy to express in
schematic form.
It converted these to structural (as opposed to behavioral)
VHDL.
This has been dropped from vivado.
Jon
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