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Last updated December 2000. | Back to Pierre Arnaud. |
This document gives some details about the hardware configuration of the Smaky 400 board. The three main components of the board are :
You definitely need the MC68360 User's Manual and the QSpan User's Manual (both are available in PDF format on the web or as printed material at Motorola and Tundra's) in order to properly initialise and set up the Smaky 400 board.
The Smaky 400 board does not have a fixed resource address map. The address of each peripheral can be defined thanks to the 68360 SIM, which is responsible for address decoding. It generates the /CSx signals which are routed as following :
/CS0 Boot chip select, not used, available on expansion connector. /CS1 Free chip select, not used, available on expansion connector. /RAS2 Row Address Strobe for DRAM bank 0. /RAS3 Row Address Strobe for DRAM bank 1. /CS4 Free chip select, not used, available on expansion connector. /CS5 Mubus chip select. /CS6 QSpan internal register chip select. /CS7 QSpan PCI image chip select (image selected through A31).
The Smaky 400 board design does not include ROMs nor any other kind of non-volatile storage on which the main CPU could boot. Therefore, it is the hosts responsibility to set up the memory before starting the main CPU.
This set up procedure can be described as following :