FPGA Replay Board

[alexh]

@MikeJ

I've got a new toy on my desk. It's on loan, but it's a Virtex-7 2000T. This baby would take a full Amiga Chipset + CPU (many times over) and early runs with Synplify + ISE have MiniMig 68k meeting timing easily constrained at 100MHz

Shame it cost over $100k

[alexh]

LX720's are so last year

Something in the realm of 8hrs on our fastest Sandy Bridge Xeon. But it doesn't help that it is partitioned over the two FPGA's in the 2000 using Certify's auto partition. This is all on loan and using minimal constraints.

Our real stuff on LX330 + FX550T is much faster due to manual partitioning at the design level and strict constraints..

[alexh]

Synthesis is very quick, 10's of minutes. MAP & Optimize + Place & Route takes the biggest amount of that time.

[alexh]

If you use a PS2 to din adapter for the Amiga keyboards, are the clock/data pins in the same place? If so, we can do it.

The A4000 keyboard pinout, A3000/A2000 keyboard with adapter and PS/2 keyboard pinout are identical. Data on pin 1, clock on pin 5.

I presume only the protocol is different.

[alexh]

All I know is I have an external keyboard adapter in my A1200T and I can plug in a real PS/2 keyboard or real A2000 keyboard with adapter and it just works(tm).  I think I used my A4000 keyboard on it for a while too, many years ago.

You've got a Lyra or other such hardware adapter.

http://amigakit.leamancomputing.com/catalog/product_info.php?products_id=228

Should be possible to implement the same detect logic inside the FPGA Replay Board. It is probably uber simple.