On 06/18/2017 06:45 PM, Luke Kenneth Casson Leighton wrote:
On Sun, Jun 18, 2017 at 11:02 PM, zap calmstorm@posteo.de wrote:
Tell me what you think of lowrisc when you get a chance. I mean as a base for your processors. heh.
i feel that the lowrisc team fit better with the ethics of what i would like to see be achieved (note deliberate use of third person, i.e. that i am not personally tying a personal egoistic agenda to or correlation with the desire to see success).
i noted in particular that the lowrisc team has set up as a CIC. that's a big plus.
technically i am particularly impressed with the concept of using a 32-bit RISCV for GPIO, which they call "minion cores". bitbanging isn't really bitbanging any more if there's an entire CPU dedicated to it. the advantage of their approach is that you no longer require complex multiplexing hardware on the GPIO (as is normally done, with dedicated hardware blocks for each I/O function). you simply... load a different program into the minioncore and the pins which e.g. were previously I2C are now UART. or some-other-future-as-yet-unspecified-or-unforseen-I/O-interface. upgrading to the latest version of SDMMC is therefore dead easy: just write a new program for the minion core.
According to the lowrisc website though, you can make a 64 bit processor if you so choose though.
I am sure you know this, but I just hope you understand that better possibilities exist. ;)
I Wonder when they are going to crowdfund though...
l.
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