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Forum Index : Microcontroller and PC projects : Unix on the Pico Computer 3

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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 11701
Posted: 04:57pm 03 Aug 2026
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v0.6 just posted on https://github.com/UKTailwind/FUZIX/releases/tag/pc3-v0.6

This has major internal changes and validates against all the test programs I have used so far. Performance is increased by about 15% for C and MMBasic. Manual is updated. Remember this is Unix V7 so for anything Unix that isn't in the manual just look up V7 documentation.

Many of the programs in the VGA demos thread will now run if they rely on PIXEL and or LINE drawing - try them
 
Bleep

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Joined: 09/01/2022
Location: United Kingdom
Posts: 828
Posted: 05:36pm 03 Aug 2026
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I've just got V0.5 running, which has graphics, so I compiled versions of Mandebrot and a recursive Mandelbrot. at the same clock speed I got.
Mandelbrot in MMBasic 15.22 seconds compiled on Fuzix 2.01 seconds
Recursive Mandelbrot in MMBasic 14.04 seconds compiled on Fuzix 2.96 seconds.
Oh bugger in the time I was writing Peter updated it, I'll try again
Edited 2026-08-04 03:37 by Bleep
 
Bleep

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Joined: 09/01/2022
Location: United Kingdom
Posts: 828
Posted: 05:56pm 03 Aug 2026
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v0.6
Mandelbrot 1.74 sec.
Mandelbrot recursive 2.58 sec.
 
PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 2037
Posted: 06:08pm 03 Aug 2026
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  Quote  To power off, type shutdown (or at minimum sync, then wait a moment). After an unclean power-off
the next boot repairs the filesystem automatically (fsck -a -y).


Would this be something of a concern for an embedded system?
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 9001
Posted: 06:37pm 03 Aug 2026
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Yes. You need supply failure detection and something to hold up the supply for long enough to shut down. You *can* rely on fsck -a -y to clean things up on boot but it's not good practice really as it delays the boot sequence - sometimes by a lot because it's a full filesystem check.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 2037
Posted: 06:41pm 03 Aug 2026
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  Mixtel90 said  Yes. You need supply failure detection and something to hold up the supply for long enough to shut down. You *can* rely on fsck -a -y to clean things up on boot but it's not good practice really as it delays the boot sequence - sometimes by a lot because it's a full filesystem check.


A-ha. I use a 5V UPS anyway and so I would detect that the machine power is lost and the system can be instructed to shut down in an orderly fashion  
 
toml_12953
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Joined: 13/02/2015
Location: United States
Posts: 695
Posted: 07:26pm 03 Aug 2026
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When I try to run BBCBasic, I get

panic: swapin: no memory


It used to run under 0.4
 
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