RetroBSD

2.11 BSD Unix for PIC32, revision G480 build 1:
     Compiled 2016-01-03 by root@goa.vak.ru:
     /website/retrobsd/build/retrobsd-sources/sys/pic32/duinomite
cpu: 795F512L 80 MHz, bus 80 MHz
oscillator: HS crystal, PLL div 1:2 mult x20
spi3: pins sdi=RF2/sdo=RF8/sck=RD15
uartusb: port USB, interrupt 45, console
sd0: port SPI3, pin cs=RD5
gpio1: portB, pins oi-oiiiiiiiiiiii
gpio2: portC, pins iiii------------
gpio3: portD, pins ----iiiiii-i---i
gpio4: portE, pins --------iiiiiiii
gpio5: portF, pins ----------iii-ii
gpio6: portG, pins ------iiii--ii--
adc: 15 channels
pwm: 5 channels
sd0: no SD/MMC card detected
panic: No root filesystem found!
no fs on dev 0/1
syncing disks... done
halted

2.11 BSD Unix for PIC32, revision G492 build 9:
     Compiled 2016-07-07 by matt@dell:
     /home/matt/git/retrobsd/sys/pic32/duinomite-emega
cpu: 795F512L 80 MHz, bus 40 MHz
oscillator: HS crystal, PLL div 1:2 mult x20

*** 0x9d01bc64: exception 'Address Load'
*** badvaddr = 0x00000003
*** stack frame at 80007f0c
        0 ffffffff       20        0
        5        0        0        0
        0        0        0        0
        0        0        0 80000084
        1        0        0        0
        0        0        0        0
        0 80000000 80007f90        0
 9d01bbfc        0        2 10000002
 9d01bc64 9d02540c 9d0254f8        2
       14        0        0        0
 9d0051e0 9d0237ac 9d026984        0
       40 9d0006b0 9d0005bc        0
        0        0        0        0
        0        0        0        0
 9d00409c 4c4d3fa6 e8c1ccf0 9d000008
 dcc52dba
*** registers:
                t0 =        0   s0 = 80000084   t8 =        0   lo =        0
at =        0   t1 =        0   s1 =        1   t9 =        0   hi =        2
v0 = ffffffff   t2 =        0   s2 =        0               status = 10000002
v1 =       20   t3 =        0   s3 =        0                cause = 10800010
a0 =        0   t4 =        0   s4 =        0   gp = 80000000  epc = 9d01bc64
a1 =        5   t5 =        0   s5 =        0   sp = 80007f90
a2 =        0   t6 =        0   s6 =        0   fp =        0
a3 =        0   t7 =        0   s7 =        0   ra = 9d01bbfc
panic: unexpected exception
halted

2.11 BSD Unix for PIC32, revision G491 build 1:
     Compiled 2016-07-07 by vak@goa.vak.ru:
     /website/retrobsd/build/retrobsd-sources/sys/pic32/duinomite-emega
cpu: 795F512L 80 MHz, bus 40 MHz
oscillator: HS crystal, PLL div 1:2 mult x20
spi3: pins sdi=RF2/sdo=RF8/sck=RD15
uartusb: port USB, interrupt 45, console
sd0: port SPI3, pin cs=RG12
gpio0: portA, pins ii---ii-iiiiiiii
gpio1: portB, pins oiiiiiiiiiiiiiii
gpio2: portC, pins iiii-------iiio-
gpio3: portD, pins iiiiiiiiiiii---i
gpio4: portE, pins ------iiiiiiiiii
gpio5: portF, pins --ii---i--iiiiii
gpio6: portG, pins ii----iiii--iiii
adc: 15 channels
pwm: 5 channels
sd0: card_cmd timeout, cmd=37, addr=00000000, reply=ff
sd0: card_cmd timeout, cmd=29, addr=40000000, reply=ff
sd0: card_cmd timeout, cmd=37, addr=00000000, reply=ff
sd0: card_cmd timeout, cmd=29, addr=40000000, reply=ff
.... until forever

https://www.olimex.com/Products/Duino/Duinomite/DUINOMITE-eMEGA/resources/DUINOMITE-eMEGA_rev_B1_schematic.pdf

options "BUS_KHZ=80000"    # Frequency of peripheral bus

your compiling :

2.11 BSD Unix for PIC32, revision G492 build 1:
     Compiled 2016-07-12 by [color=#00BF00]vak@goa.vak.ru[/color]:
     /website/retrobsd/build/retrobsd-sources/sys/pic32/duinomite-emega
cpu: 795F512L 80 MHz, bus 40 MHz
oscillator: HS crystal, PLL div 1:2 mult x20
spi3: pins sdi=RF2/sdo=RF8/sck=RD15
uartusb: port USB, interrupt 45, console
sd0: port SPI3, pin cs=RG12
gpio0: portA, pins ii---ii-iiiiiiii
gpio1: portB, pins oiiiiiiiiiiiiiii
gpio2: portC, pins iiii-------iiio-
gpio3: portD, pins -iiiiiiiiiiiiiii
gpio4: portE, pins ------iiiiiiiiii
gpio5: portF, pins --ii------iii-ii
gpio6: portG, pins ii----iiii--iiii
adc: 15 channels
pwm: 5 channels
sd0: function groups 3/1/1/1/1/1, max current 100 mA
sd0: type SDHC, size 7676928 kbytes, speed 20 Mbit/sec
sd0a: partition type b7, sector 2, size 102400 kbytes
sd0b: partition type b8, sector 204802, size 2048 kbytes
sd0c: partition type b7, sector 208898, size 102400 kbytes
phys mem  = 128 kbytes
user mem  = 96 kbytes
root dev  = (0,1)
swap dev  = (0,2)
root size = 102400 kbytes
swap size = 2048 kbytes
*** 0x7f00c7a4: fsck: bus error
/: file system full

/: write failed, file system full
/etc/rc: 3 Bus error
--- Unknown error in fsck
/: file system full
July 12 18:00:39 init: /etc/rc failed: status = 0x100
erase ^?, kill ^U, intr ^C

# df
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
root           101999   101999        0   100%    /
#
-------------
# rm fsck.core    <<< my reaction
# df
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
root           101999   101941       58    99%    /

then kernel panik, after that, no boot possible

#########################################
00:28 14.07.2016

new compiled all, / is now 512MB

-----------

2.11 BSD Unix for PIC32, revision G492 build 1:
     Compiled 2016-07-13 by root@freebsd-10.3:  <<< it's my dev-environment
     /retrobsd/sys/pic32/duinomite-emega
cpu: 795F512L 80 MHz, bus 40 MHz    <<< strange, should be 80Mhz ?
oscillator: HS crystal, PLL div 1:2 mult x20
spi3: pins sdi=RF2/sdo=RF8/sck=RD15
uartusb: port USB, interrupt 45, console
sd0: port SPI3, pin cs=RG12
gpio0: portA, pins ii---ii-iiiiiiii
gpio1: portB, pins oiiiiiiiiiiiiiii
gpio2: portC, pins iiii-------iiio-
gpio3: portD, pins -iiiiiiiiiiiiiii
gpio4: portE, pins ------iiiiiiiiii
gpio5: portF, pins --ii------iii-ii
gpio6: portG, pins ii----iiii--iiii
adc: 15 channels
pwm: 5 channels
sd0: function groups 3/1/1/1/1/1, max current 100 mA
sd0: type SDHC, size 7676928 kbytes, speed 20 Mbit/sec
sd0a: partition type b7, sector 2, size 512000 kbytes
sd0b: partition type b8, sector 1024002, size 204800 kbytes
sd0c: partition type b7, sector 1433602, size 102400 kbytes
phys mem  = 128 kbytes
user mem  = 96 kbytes
root dev  = (0,1)
swap dev  = (0,2)
root size = 512000 kbytes
swap size = 204800 kbytes
panic: init died     <<<<<<< why ???
syncing disks... done
halted
#################
then , no more reboots are possible, maybe the SD-Card has corrupt Filesystem
but it's too late ... :-)

2.11 BSD Unix for PIC32, revision G498 build 2:
     Compiled 2016-07-16 by root@freebsd-10.3:
     /retrobsd/sys/pic32/duinomite-emega
cpu: 795F512L 80 MHz, bus 80 MHz
oscillator: HS crystal, PLL div 1:2 mult x20
spi3: pins sdi=RF2/sdo=RF8/sck=RD15
uartusb: port USB, interrupt 45, console
sd0: port SPI3, pin cs=RG12
gpio0: portA, pins ii---ii-iiiiiiii
gpio1: portB, pins oiiiiiiiiiiiiiii
gpio2: portC, pins iiii-------iiio-
gpio3: portD, pins -iiiiiiiiiiiiiii
gpio4: portE, pins ------iiiiiiiiii
gpio5: portF, pins --ii------iii-ii
gpio6: portG, pins ii----iiii--iiii
adc: 15 channels
pwm: 5 channels
sd0: function groups 3/1/1/1/1/1, max current 100 mA
sd0: type SDHC, size 3887104 kbytes, speed 20 Mbit/sec
sd0a: partition type b7, sector 2, size 102400 kbytes
sd0b: partition type b8, sector 204802, size 2048 kbytes
sd0c: partition type b7, sector 208898, size 102400 kbytes
phys mem  = 128 kbytes
user mem  = 96 kbytes
root dev  = (0,1)
swap dev  = (0,2)
root size = 102400 kbytes
swap size = 2048 kbytes
/dev/sd0a: 1445 files, 12377 used, 89622 free
Starting daemons: update cron


2.11 BSD UNIX (pic32) (console)

login: root
Password:
Welcome to RetroBSD!
erase ^?, kill ^U, intr ^C

# pwd
/root
# ls -l
total 1
-rw-rw-r--  1 root          107 Jul 13 17:05 .profile
# df
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/sd0a      101999    12380    89619    12%