audio mode load change from Tourmaline Our FreeCalypso universe now has two kinds of audio mode config files: the old 164 byte kind and the new 176 byte kind. We are not enabling L1_NEW_AEC in Magnetite, only in Tourmaline, thus 164 byte audio mode files are still native to Magnetite. But we still desire graceful handling of the situation when a running Magnetite fw may load a 176 byte audio mode file (presumably with new AEC config), thus we incorporate the same audio mode loading change which we implemented in Tourmaline: if the loaded audio mode file is of the wrong kind, the AEC config is cleared to default disabled state.

# This patch applies to the Init_Target() function in the init.obj module in
# main.lib; it is an example of how this code will need to be patched for
# running on our own future FreeCalypso hardware if we choose to use the same
# Spansion S71PL129NC0 flash+pSRAM MCP as used in the Pirelli DP-L10 and use
# the same memory timings as set by Pirelli's firmware.

[init.obj]

# value goes into nCS0, nCS1 and nCS3 config registers
.text 66 A4
# value goes into nCS2 config reg
.text 6C A4

# nop out the write into 0x02700000

.text 128 C0
.text 129 46