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Re: Gryphon 68030 [message #1013 is a reply to message #1001] Tue, 26 July 2016 13:50 Go to previous messageGo to previous message
lynchaj is currently offline  lynchaj
Messages: 1080
Registered: June 2016
Senior Member
Hi

*update*

Made a couple of minor nit cleanup changes but nothing substantial.

The IO on this SBC is extremely limited. Two TTL serial ports from the MC68360 and 3 JTAG ports one each from the MC68040, MC68360, and the CPLD. No mass storage or anything other than serial IO. In this version the CPLD does nothing and is only on the board for debugging purposes during build and test.

The board has 2MB of SRAM (512KBx32) and 512KB of Flash (512Kx8). There are also two 72 pin SIMM sockets for up to 256MB of DRAM.

The purpose is to form a new CPU core for the Gryphon and this board should be considered temporary. Once it is built, tested, and working the design will be swapped into the CPU+memory section.

We are looking for some people with advanced prototyping skills to help with the build and test of this board. If you are into complex debugging a very minimalist SBC this project might be for you.

*/update*


It seems that to change the Gryphon to address more than 32MB of DRAM we need a new core CPU architecture. We are dusting off the old MC68040/MC68360 project from a few years ago and considering using it as a replacement to the Gryphon CPU/coprocessor/SRAM/Flash/DRAM/DP8422V subsystem.

An updated MC68040/MC68360 design is attached.

index.php?t=getfile&id=160&private=0

If you are interested in build and test of this proof-of-concept board please send me a PM or reply in this thread.

Thanks

Andrew Lynch

[Updated on: Thu, 28 July 2016 15:43]

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