Cybiko Memory Map v1.0121

-------------------------

 By Jeff Frohwein



 The Cybiko uses a Hitachi H8S/2241 as the main CPU.

It operates in Advanced mode #6.



V1 = Version 1 cybiko Hardware Only

V2 = Version 2 cybiko Hardware Only



Whole Range

-----------



 000000 - 007fff Internal CPU (CyOS Boot Loader) ROM



 010000 - 07ffff  Repeats of CyOS Flash (V2)

 100000 - 13ffff 256KByte CyOS Flash (V2)

 140000 - 1fffff  Repeats of CyOS Flash (V2)



 200000 - 27ffff 256K(V2)/512K(V1)Byte Internal RAM

 280000 - 2fffff   Repeat of Internal RAM

 300000 - 37ffff   Repeat of Internal RAM

 380000 - 3fffff   Repeat of Internal RAM



 400000 - 43ffff 256KByte Expansion Card RAM

 440000 - 5fffff   Repeats of Expansion RAM



 600000 - ffebff Empty



 ffec00 - fffbff 4KBytes Internal CPU RAM



 fffe40 - ffff07 Internal I/O Registers



 ffff28 - ffffff Internal I/O Registers



 Note1: Internal 512KByte File Flash & Expansion Card 1MByte

        File Flash are not memory mapped. They are accessed

        through a serial buss.



 Note2: Memory areas that repeat are an artifact that's

        caused by simple hardware design techniques. It

        is not a good idea to rely upon these areas since

        they can disappear in future hardware versions.