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--- mg_notes:iie_card:firmware [2017/07/17 14:53]
M.G. created
+++ mg_notes:iie_card:firmware [2017/07/25 16:19] (current)
M.G. formattign fix
@@ Line 1: / Line 1: @@
-====== LC //e Card Firmware Notes ======
+====== LC //e Card - Memory / Firmware Notes ======
+The %%//%%e Card has 256K of memory.  Of this, 128K is allocated as the Apple %%//%%e's main memory.  I have determined that another 64K is used to store 3 firmware banks plus the $C800 code associated with the 5.25 drive code.  I believe that at least part of the remaining 64K is used for the $C800 space of the remaining "cards", and probably at least some of it is used to move data back and forth between the %%//%%e and the host Macintosh.
+See [[mg_notes:iie_card:iie_startup_resources|this page]] for information on where the firmware is loaded from and [[mg_notes:iie_card:io_addresses|this page]] for bank switching I/O locations.
+Among the special things about the firmware:
+  * Like the %%//%%c and IIgs, the 5.25 boot ROM can fail over to the next slot, rather than sit forever with the drive spinning.
+  * The "Apple %%//%%e" title screen includes a copyright notice like the IIgs does.

MG's Apple II Site