[chbot] Surplus Linux boards M93030B

Mark Atherton markaren1 at xtra.co.nz
Sat Sep 26 21:26:06 BST 2020


Apart from the obvious stuff sticking out of the board, the datasheet 
for the CPU also mentions I2C, SPI, SD card, RS485, PWM, GPIO and a USB 
host. So any, or all of the above could be brought out on the headers.

On 27/09/2020 9:10 AM, Andrew Dachs wrote:
> Any idea what the headers are for?
> 
> Sent from my iPhone
> 
>> On 27/09/2020, at 8:55 AM, Mark Atherton <markaren1 at xtra.co.nz> wrote:
>>
>> ´╗┐Just found a supply of older industrial-grade ARM based SBCs which appear to support Linux. There may be quite a few available, and at low cost.
>>
>> http://www.idesignz.org/misc/M93030B_SBC.jpg
>>
>> CPU: Atmel AT91RM9200,
>>
>> FLASH: 2 x 45DB642 (16M bytes total). RAM: 2 x K4S561632H (64M bytes total).
>>
>> Ethernet Phy: KSZ8721BL (100M). MAC 00-04-E8-XX-XX-XX, which was registered by IER, Inc.
>>
>> At least 2 x RS232 ports, with MAX3243 buffers.
>>
>> Full size USB-B socket (USB device, not host).
>>
>> RTC: M41T00, with small backup cell.
>>
>> White headers are 2mm pitch.
>>
>> 106 x 84mm including connector protrusions.
>>
>> Board is 2007 vintage, and marked 'M93030B'
>>
>> Various linux Distributions identify the unit as 'MACH_M93030'.
>>
>> --------
>>
>> Found a UBOOT distribution, and references to MACH_M93030.
>>
>> A full OEM hardware manual will be very useful, but nothing obvious pops up.
>>
>> The 64-mega-bit question is of course how much effort is a board like this worth to get it going ?
>>
>> Thoughts please.
>>
>> -Mark
>>
>>
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