[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Is it possible to build a modern Apple][?
This has been done with the C64 and the Vic20. The Commodore DTV sells
for under $20 and has 2 MB of RAM, 2 MB of Flash, and the main ASIC
(total of 3 chips). However, it still runs at 1 Mhz (out of need for
compatibility) but can be set to burst mode (where it takes advantage
of the SDRAM and other timing enhancements) to get approx. 4 times
faster speed, while still running at 1 Mhz.
I have a website on it:
http://galaxy22.dyndns.org/misc/hummerdtv/index.html
One other note.. it isn't neccessary for the device to run at 5 ghz
just to be 5000 times faster. Old 8-bit systems are very inefficient
use of bus cycles, amongst other things. I would imagine you could
easily be 5000 times faster just using 200 to 300 Mhz.
But back to the original question.. I too am interested to know the
answer (not using an FPGA) I investigated this question for the
Commodore systems about a year ago. I had a quest to build one from
off-the-shelf parts. Unfortunatly there are no substitutes for the
sound and graphics chips in the commodore systems. (without going to a
custom ASIC or FPGA) I think I determined that one could, in fact,
build a Commodore PET from off-the-shelf parts. (but who would want
one?) But I do not know enough about the Apple II systems to know if
there are chips that can't be substituted.