Technical data

Preparing the Board
http://www.mcg.mot.com/literature 1-13
1
The next four tables show the address range for each EPROM socket in all
four configurations. GPI4 (J21 pins 9-10) is a control bit in the MC2chip
ASIC that allows reset code to be fetched from Flash memory or from
EPROMs.
Table 1-3. EPROM/Flash Mapping — 256K x 8 EPROMs
GPI4 Address Range Device Accessed
Removed 1 $FF800000 - $FF83FFFF EPROM A (XU1)
$FF840000 - $FF87FFFF EPROM B (XU2)
$FFA00000 - $FFBFFFFF Onboard Flash
Installed 0 $FF800000 - $FF9FFFFF Onboard Flash
$FFA00000 - $FFA3FFFF EPROM A (XU1)
$FFA40000 - $FFA7FFFF EPROM B (XU2)
Table 1-4. EPROM/Flash Mapping — 512K x 8 EPROMs (default)
GPI4 Address Range Device Accessed
Removed 1 $FF800000 - $FF87FFFF EPROM A (XU1)
$FF880000 - $FF8FFFFF EPROM B (XU2)
$FFA00000 - $FFBFFFFF Onboard Flash
Installed 0 $FF800000 - $FF9FFFFF Onboard Flash
$FFA00000 - $FFA7FFFF EPROM A (XU1)
$FFA80000 - $FFAFFFFF EPROM B (XU2)