[Oberon] Oberon software on Cortex-M4

Chris Burrows chris at cfbsoftware.com
Fri Oct 3 14:54:02 CEST 2014

> -----Original Message-----
> From: Paul Reed [mailto:paulreed at paddedcell.com]
> Sent: Friday, 3 October 2014 8:59 PM
> To: chris at cfbsoftware.com; ETH Oberon and related systems
> Subject: Re: [Oberon] Oberon bare metal on the Raspberry Pi
> Any chance of supporting the STM32F4DISCOVERY?  Cortex-M4 with 1MB
> FLASH and 192yes192Kb RAM.  It's ten quid!  Renders discrepancies about
> beer prices moot :)

We're thinking about it ...

In the meantime, a bird in the hand is worth two in the bush: Astrobe for
Cortex-M4 can currently be used with the Embedded Artists QuickStart board
with an NXP LPC4088 microcontroller that has no such restrictions.  It is
not quite as cheap (Euro 49) but also has a generous amount of memory:

Program Flash: 8 MB QSPI + 512 KB on-chip 
Data Memory: 32 MB SDRAM (x32 bit databus for high handwidth access) + 96 KB
on-chip SRAM + 4 KB on-chip E2PROM

We haven't tried using the QSPI flash yet. However, as the Oberon Cortex-M4
library modules created by Astrobe are typically only each about 2.5KB in
size it would be a real challenge to write an application that needed 512KB!


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