Re: 1 euro Olimex RISC-V mini-PC: this needs Forth ;)

In article <vesgmb$1i2rq$1@paganini.bofh.team>,
Waldek Hebisch <antispam@fricas.org> wrote:

LIT <zbigniew2011@gmail.com> wrote:

I ordered 3 kinds: 64Mb, 256Mb and Milkv-Duo-S (this has 512 Mb).
Linux images fetched from Github boot fine and simple things
work.  This is very minimal Linux, on 64Mb board I get:
>
[root@milkv-duo]~# cat /proc/cpuinfo
processor     : 0
hart          : 0
isa           : rv64imafdvcsu
mmu           : sv39
>
[root@milkv-duo]~# df
Filesystem     1K-blocks   Used Available Use% Mounted on
/dev/root         770048 177105    549526  25% /

>
This must be the "largest" one, not that 64 MB,
from what I see ("Available 549526" and its
prompt "root@milkv-duo")? Correct?

>
No. 'df' report "disc" (actually SD-card) space.  'free' reports
RAM:
>
[root@milkv-duo]~# free
             total        used        free      shared  buff/cache   available
Mem:          28972       14496        4148          76       10328       11720
Swap:             0           0           0
>
As you can see "total" is about 29Mb with 4Mb free.  I put total in
quotes because part of RAM is reserved and in default configuration
there is large hunk reserved for media (camera, TPU, etc).
>
Concerning prompt, the 64Mb boards runs Linux and by default offers
root login.
>
--
                             Waldek Hebisch

For what it is worth.
I have ported the ciforth model (only 64 bits,the 5.4.0 level) onto
linux running on a riscv, taking advantage from earlier Dutch
implementation of noforth for triecky code words (UMD/MOD).
http://home.hccnet.nl/a.w.m.van.der.horst/lina.html
As usual, all words are extensively tested, all words are documented.

There is I/O for this DongshanNeZha STU board.
Serial port is easily configured to accomodate 31.25 baud (midi)
and manx happily plays the "FIG leaf rag" on my keyboard.

For these single board linux computers (also Orange pi, raspberry pi)
I supply

worddoc({INITIALISATIONS},{MMAP-IO},
 {memory_map_io},
 {},{},{Fills VMA-IO with the memory base address or else an error code.
 forthdefi({DEV-MEM}) has been filled at forthdefi({COLD}).
 If that failed VMA-IO will contains a same negative number,
 that indicates the error.  }

Once you have mapped the io space in virtual space and access it
via VMA-IO, you can apply all knowledge gained from the documentation
of the underlying System On a Chip.
For this particular board the printed circuit layout, the schematics
(9 pages) and a full 1000+ page documentation of the SoC (Allwinner
D1) is available. That is why I bought it.

Sorry, if I had announced this before.
An official announcement has to wait before a burn in period has expired
and I manage to have TICKS available (blocked by really paranoia protection
shit.)

Groetjes Albert
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