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RIZE is an open hardware, open source computer for teaching computer fundamentals.  The project's goal is to create a very low cost platform with a classic architecture.  The minimal-abstraction approach enables the user to understand the direct relationship between programming and hardware.

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RMS100 Development Board FAQ

Q. I'm getting started.  What do I need ?

You should purchase a RMS100 with the USB option.  This will allow you to both power and download to the RMS100 with a single USB cable.  You'll also need a suitable USB cable.  Our parallel port debug cable will allow source-level debugging with CrossWorks from Rowley Associates.

Q. What's the best way to download code into the RMS100 ?

You have 3 options:

RMS100 ships with a pre-programmed boot-loader.  Executable ELF files can be downloaded via USB using Hyperterminal at up to 921kbaud. 

The RMS100 has a standard 20-pin JTAG connector, which is compatible with most ARM debuggers.  Using this option requires moving a jumper on the RMS100.

For low-cost source level debugging, the RMS100 has an on-board interface for debugging from a PC parallel port. This option requires a parallel port debug cable and 3rd party software (Rowley Associates CrossWorks support coming soon).

Q. Can I control USB devices with the RMS100 ?

No.  The RMS100 uses Silicon Labs CP2101 UART to USB bridge.  This part does not support USB host operation, but it does enable high speed serial transfers from any PC to UART1 on the LH75401. 

Q. Can I use a Wiggler with the RMS100 ?

You can but you don't need to.  The RMS100 has an integrated parallel port interface (requires Revely Debug Cable) - just leave the jumper set to LPT.  Start CrossWorks and select 20-pin Wiggler debug target. 

Note that debugging software other than CrossWorks may be unreliable with the 7TDMI-S core used in the Sharp LH75401 when using LPT debug or Wiggler.

Q. What about support for the LH75400, LH75410, LH75411 ?

The LH75401 essentially the super-set part in this family.  We don't currently support the parts with Gray-scale LCD controllers.

Q. Are Linux drivers available for the CP2101 USB to Serial device ?

Not currently but, according to Silicon Labs, Linux device drivers are under development

 

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