Canon X-07 User Manual page 115

Memory reservation
0000 -1 FFFH (8K bytes)
This is the SK byte RAM area incorporated in the X-07. Selection of
the left or right space depends on the hardware of the 1/0 control chip.
When the CPU is reset, access is switched to the left side of the space.
The left side includes "jump to C3C3" instruction.
00 H is the first address accessed when the CPU is reset. In this way,
the CPU executes "jump to C3C3" as its first instruction. (C3C3 is the
ROM area). From then on, when specified instructions are executed in the
ROM area, 0000
2000 -3 FFF (8K bytes)
Is reserved as the RAM area for an optional memory card. The RAM of
a memory card is 0 (ROM only), 2K, 4K, or SK.
4000-5 FFF
This is the address range of the memory socket. This area is reserved for a
special use by SK byte CMOS EPROM or mask ROM.
(2000 -5 FFF)
400 - 5 FFF area is for ROM. However, when a RAM is connected to
the memory socket, address range of the memory socket is 20 - 3 FFF,
and that of the memory card is 4 000
area can be used continuously. Switching of this address range is
performed with a DIP switch. In this way, the X-07 can be extended to a
16K RAM (connect a RAM to the memory socket) or a 24K RAM
(further connect a SK RAM memory card) system.
6000 - 7 FFF (8K bytes)
This is the area for a ROM application card. It is reserved for application
programs (BASIC or machine language).
8000- 97 FF (6K bytes)
This area is reserved for Video-RAM extension memory for output to a
TV.
9800 -9 FFF (2K bytes)
This area is reserved for the control ROM of an extension station and an
extension pack (RS 232C, 1/0 pack, etc.). This area can be divided into 4
areas with the bank switch.
106
- 1 FFF switches to the right side, and is used as RAM.
- 5 FFF. This is so that the RAM