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projects:rf_lc [2017/08/13 20:03]
M.G. created
projects:rf_lc [2017/08/14 15:07] (current)
M.G. [Technical]
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 I have devised a way to replace the Slinky firmware in the Apple %%//%%e Card for Macintosh LC with the Applied Engineering RamFactor firmware. I have devised a way to replace the Slinky firmware in the Apple %%//%%e Card for Macintosh LC with the Applied Engineering RamFactor firmware.
  
-Doing so gives all the partitioning features of the RamFactor. ​ Unfortunately since it's not persistent it can't be recovered after exiting/​restarting the Card.+Doing so gives all the partitioning features of the RamFactor. ​ Unfortunately since it's not persistent it can't be recovered after exiting/​restarting the ''​IIe Startup''​ application.
  
 ===== Download ===== ===== Download =====
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       - Open CNxx in the copy of ''​IIe Startup''​.       - Open CNxx in the copy of ''​IIe Startup''​.
       - Paste the copied resources, and choose to overwrite the existing ones.       - Paste the copied resources, and choose to overwrite the existing ones.
-    - CNxx:+    - Monx:
       - Open Monx in ''​RF LC'',​ select all resource IDs and copy.       - Open Monx in ''​RF LC'',​ select all resource IDs and copy.
       - Open Monx in the copy of ''​IIe Startup''​.       - Open Monx in the copy of ''​IIe Startup''​.
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   - Analysis of the [[mg_notes:​iie_card:​iie_startup_resources|''​IIe Startup''​]] application.   - Analysis of the [[mg_notes:​iie_card:​iie_startup_resources|''​IIe Startup''​]] application.
 +    - Decoding the simple obfuscation used in the main firmware. ​
 +    - Determining the header format of the main firmware. ​
   - Disassembly of the RamFactor firmware.   - Disassembly of the RamFactor firmware.
   - Modification of the RamFactor firmware to account for no C8xx bank switching.   - Modification of the RamFactor firmware to account for no C8xx bank switching.
   - Modification of the RamFactor firmware to know where to find the partition manager and diagnostics in the %%//%%e Card aux firmware banks.   - Modification of the RamFactor firmware to know where to find the partition manager and diagnostics in the %%//%%e Card aux firmware banks.