Search found 372 matches

by Pr0f
Thu Jun 13, 2019 9:45 am
Forum: The Off-Topic Section
Topic: Happy Birthday!
Replies: 180
Views: 66764

Re: Happy Birthday!

Happy Birthday :-)
by Pr0f
Mon Jun 10, 2019 3:29 pm
Forum: Compatibles Corner
Topic: Q68 I2C addresses.
Replies: 16
Views: 1247

Re: Q68 I2C addresses.

Not 68K, but probably not too difficult to transpose to 68K c or assembler:

https://calcium3000.wordpress.com/2016/ ... al-part-i/
by Pr0f
Sun Jun 09, 2019 1:14 pm
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4653

Re: Symmetric multiprocessing...

Also, the 68K vector area and etc. are so small, it might be unnecessary to remap the DPRAMs, IF they do not conflict with a ROM image. I haven't tackled that part of the design yet. you can use the FC0-FC2 to signal a fetch of restart vector - as it's different to other vector fetches - and could ...
by Pr0f
Fri Jun 07, 2019 7:46 pm
Forum: For Sale
Topic: For Sale: QL Books
Replies: 8
Views: 844

Re: For Sale: QL Books

Thanks Derek - I will take that one :-)
by Pr0f
Fri Jun 07, 2019 2:10 pm
Forum: For Sale
Topic: For Sale: QL Books
Replies: 8
Views: 844

Re: For Sale: QL Books

What's the Quick QL machine language book like Derek?

I might be interested in that one.
by Pr0f
Fri Jun 07, 2019 11:19 am
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4653

Re: Symmetric multiprocessing...

that's a very sparsely populated board ! :-)
by Pr0f
Thu Jun 06, 2019 10:22 am
Forum: Wanted
Topic: Aurora
Replies: 0
Views: 579

Aurora

Has anyone got an Aurora board or pcb and some parts to put one together ?
by Pr0f
Thu Jun 06, 2019 10:18 am
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4653

Re: Symmetric multiprocessing...

I thought there were some heavy license costs with those embedded arm core FPGA's ? I was looking at the bemcro-CV a9 board when it was available, which had an A9 ARM core on board, but I was mainly interested in the large logic element count ideal for making a 'big' VHDL propeller chip implementati...
by Pr0f
Wed Jun 05, 2019 10:37 am
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4653

Re: Symmetric multiprocessing...

You could also take the approach that each CPU would be it's own QL - effectively virtualising the QL into a logical entity with real CPU and memory, and only having the I/O as common

A new device could act as an inter processor gateway
by Pr0f
Wed Jun 05, 2019 10:33 am
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 4653

Re: Symmetric multiprocessing...

I think if you are going down the route of symmetric multiprocessing - you are talking about 68K compatible cores. Something along the lines of - I've got a job to run... ...How many processors are registered with me ? … There are 8 of us on line - cpu 5 is the next one to get a new job --- Dispatch...