Random Reverse Engineering Notes

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=== Memory Layout J5000 ===
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== Memory Layout J5000 ==
  
 
  fffffff0f0400000 - unknown, assumed EEPROM, but content different than what eepromread returns
 
  fffffff0f0400000 - unknown, assumed EEPROM, but content different than what eepromread returns
 
  fffffff0f05d0000 - LCD
 
  fffffff0f05d0000 - LCD
  
=== PDC PAGE0 processor specific ===
+
== PDC PAGE0 processor specific ==
  
 
  0x640: code that will be executed when PDC_PROC(0) is called, loop with nops:
 
  0x640: code that will be executed when PDC_PROC(0) is called, loop with nops:
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  0x680: OS rendezvous code
 
  0x680: OS rendezvous code
  
=== Undocumented PDC routines ===
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== Undocumented PDC routines ==
  
 
0x81: EEPROM read/write
 
0x81: EEPROM read/write

Revision as of 07:14, 3 May 2019

Memory Layout J5000

fffffff0f0400000 - unknown, assumed EEPROM, but content different than what eepromread returns
fffffff0f05d0000 - LCD

PDC PAGE0 processor specific

0x640: code that will be executed when PDC_PROC(0) is called, loop with nops:
  0x00000640  e81f1ff5  08000240  08000240  08000240
  0x00000650  08000240  08000240  08000240  08000240
  0x00000660  08000240  08000240  08000240  08000240
  0x00000670  08000240  08000240  08000240  08000240
0x680: OS rendezvous code

Undocumented PDC routines

0x81: EEPROM read/write

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