Smaller, energy efficient turbo card for A1200

[bloodline]

I'd probably use an XScale for this task, and run a 68k JIT emulator on it... or if I had some serious investment, then I'd probably use a Duron...

[bloodline]

alexh wrote:

bloodline wrote:
I'd probably use an XScale for this task, and run a 68k JIT emulator on it... or if I had some serious investment, then I'd probably use a Duron...

Like that would work... NOT.

What about the external BUS etc. hardware that you cannot emulate?

Before you know it you'd have almost created a 68000 CPU with glue logic just to get the square peg in the round hole!

Well, since the alien Processor would be the bus master of the Amiga system, I would expect it wouldn't be to interface between the ZII and HT (for the Duron) bus's with an FPGA which could house a few other core's, like USB etc...

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DamageX wrote:

What about the external BUS etc. hardware that you cannot emulate?

Before you know it you'd have almost created a 68000 CPU with glue logic just to get the square peg in the round hole!

I don't see where you get this idea that it will take "almost a 68000." Just look at any A500/A600/A1000/A2000 accelerator and you'll see that the 68000 state machine is at most a handful of oldschool programmable logic and TTL chips.

AMD CPU's also include an on chip memory controler so support chips could be kept to a minimum.

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alexh wrote:

DamageX wrote:
I don't see where you get this idea that it will take "almost a 68000." Just look at any A500/A600/A1000/A2000 accelerator and you'll see that the 68000 state machine is at most a handful of oldschool programmable logic and TTL chips.

The logic on most Amiga accelerators is JUST a very simple 68k to DRAM bridge, plus some sort of asynchronous buffer from the higher speed 680x0 bus to the 7MHz Amiga bus. The two are VERY a like (and were designed to be so).

A non 68k bus to Amiga Bus will take a lot more glue logic, speed bridges, buffers etc. No one will ever attempt this. Too much work. No reward.

Yeah it's a lot of work... which is why I said that if there was some serious investment, that is the route I would take.

Right now, there is NO chance of any more hardware for classic hardware as any new hardware is going to cost more than it could ever sell.