Jim Brain wrote: > For what it's worth, I'm finally getting my feet wet with programmable > logic. I put it off before because I knew it'd would be a non trivial > time investment to learn a language and a new way to implement HW > designs, but the economic aspect drove me in this direction. Many of > the project ideas I have cannot be economically created with discrete > logic, and there are some features of existing projects (Link232 having > Turbo232 compatibility) that fit best with programmable logic (the T232 > has GALs to implement its functionality). I've chosen Verilog, since > I'm a 'C' guy, and I grabbed Icarus Verilog to learn the ropes before > fighting with vendor tools, though I downloaded the vendor tools as well > (I used the schematic editor in the Xilinx tool to prove out an idea for > one project, but quickly decided the schematic editor was less than > ideal for programmable logic definition). I like iverilog+vvp for quick hacking. It runs so much faster than ISE or other tools. I typically code up a C model for the peripherals in VPI and then start on the core in Verilog. make + iverilog + vvp gives quick turnaround on getting it working functionally. Then when you're ready to test in the device, link into ISE to get a .bit file. If you're looking for middle ground in terms of cheapness, a PAL + SOP equations can be adequate. That's what the C64 used for the 6510 IO port -> memory map selection. :) -- Nate Message was sent through the cbm-hackers mailing listReceived on 2010-02-04 19:00:36
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