06-09-2016, 07:33 AM
Hello,
I wanted to tell about one of the projects I'm working on: recreating a HP-25. Of course there is a couple of emulators, but having the calc on one's hand is something else, I think.
I decided, because I like FPGAs, to use a small MachXO2 device to recreate the chipset of the calc.
Being a work in progress means that it doesn't yet exists outside a simulator, but it seems to runs the microcode . I still have to compare the output to a trace of the java emulator.
If anyone wants to peek into the HDL, I posted it here: HDL and Testbench
The testbench works with icarus verilog and should still work with Aldec's Active HDL simulator (installed with Lattice Diamond).
A circuit is in the works , I have to relearn KiCad again
I wanted to tell about one of the projects I'm working on: recreating a HP-25. Of course there is a couple of emulators, but having the calc on one's hand is something else, I think.
I decided, because I like FPGAs, to use a small MachXO2 device to recreate the chipset of the calc.
Being a work in progress means that it doesn't yet exists outside a simulator, but it seems to runs the microcode . I still have to compare the output to a trace of the java emulator.
If anyone wants to peek into the HDL, I posted it here: HDL and Testbench
The testbench works with icarus verilog and should still work with Aldec's Active HDL simulator (installed with Lattice Diamond).
A circuit is in the works , I have to relearn KiCad again