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Author Topic: Am I really alone in wanting an Amiga AGA compatible?  (Read 7413 times)

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Offline psxphill

Re: Am I really alone in wanting an Amiga AGA compatible?
« on: June 26, 2015, 08:19:50 PM »
Quote from: matthey;791628
The FPGA Arcade only is about as fast as a high clocked 68030 and has no FPU or MMU. The unavailable expansion and a rare rev 6 68060 are required for "the fastest classic Amiga".

Yeah that is the real problem, once FPGAs can run a 100% compatible 68060 with FPU and MMU faster than anything Motorola ever made then I will probably buy one.
 

Offline psxphill

Re: Am I really alone in wanting an Amiga AGA compatible?
« Reply #1 on: June 27, 2015, 12:16:42 AM »
Quote from: mechy;791685
Why bother with fpgaarcade and such anyway,a emulator on a cheap pc does the same( i prefer real hw!), its not like this stuff will give you the real amiga experience no matter how cool/neet/wow fpga arcade etc is.

The main difference is latency. An fpga ought to be able to achieve the same latency as real hardware. An emulator will always have at least one frame of latency for the display plus whatever the usb peripherals introduce.
 

Offline psxphill

Re: Am I really alone in wanting an Amiga AGA compatible?
« Reply #2 on: August 06, 2015, 08:13:44 AM »
Quote from: mechy;793293
i want a 4k board with onboard 060 preferrably without all the bottle necks of the 1200.


The a1200 is simpler and the only bottle neck is the cpu slot, which if you're using a bus board with it's own cpu is not much of a problem. Although the problem then becomes the form factor.

The a4000 would be much more complex and therefore expensive and in comparison the improvements possible would be minor.

I'd much rather see a standard form factor board using an off the shelf I/O controller with an upgraded AGA and a cpu that outperforms the fastest 060. I think we have a way to go before that is possible though.
 

Offline psxphill

Re: Am I really alone in wanting an Amiga AGA compatible?
« Reply #3 on: August 06, 2015, 10:20:53 PM »
Quote from: glitch;793607
Myself, I would love to see an ATX form factor board with AGA, 040/060 socket, and Zorro slots.  Using a standard ATX power supply too.   KS 3.9 on a large single EEPROM, on-board Indivison, USB would also be awesome.  No daughter cards or things hanging off other chips - just a nice and clean layout.


Kickstart should be in flash & I'm not convinced about Zorro. It's too slow and the cards are too expensive. I can see that someone with a stack of Zorro cards might see it as a positive, but I'd rather have m.2 and PCIe slots.

Using modern ram so that you can dma from disk and have the cpu fetching while aga is saturating the "chip" bus. If you reimplement AGA then it can also run the blitter at the same time and you may as well support ~4gb of chip ram. i.e. stick 4gb of ram in it and map ram in the areas that aren't needed for I/o cards.

Use a socket and you could start with an FPGA for CPU+AGA and switch to an ASIC later.